Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / P0193 — Fuel Rail Pressure Sensor 'A' Circuit High

P0193 — Fuel Rail Pressure Sensor 'A' Circuit High

Detailed page for trouble code P0193.

33,111codes
59brands
10,650generic
22,461specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

P0193

FORD P — Powertrain

Fuel Rail Pressure Sensor 'A' Circuit High

Brand: FORD
Type: P — Powertrain
Views: UK: 20 EN: 18 RU: 13
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to battery voltage in the FRP sensor signal circuit
  • Open or corroded ground or 5V reference to the sensor
  • Faulty fuel rail pressure sensor (FRP)
  • Damaged/worn wiring harness or connector (chafing, pin pushed out)
  • PCM internal fault or poor PCM ground
  • Aftermarket electrical modifications or incorrect sensor replacement

Symptoms

  • Check Engine Light (MIL) ON with stored P0193
  • Hard starting, rough idle, poor drivability or loss of power (fuel control affected)
  • Engine may go into limp mode or reduced power
  • Possible fuel trim abnormalities or inconsistent fuel pressure readings in scan data

What to check

  • Retrieve freeze frame and live data with a scan tool; record fuel rail pressure sensor voltage and commanded rail pressure
  • Visually inspect FRP sensor connector and wiring for damage, corrosion, melted insulation or pin back-out
  • Backprobe sensor connector and measure signal voltage with ignition ON (engine OFF)
  • Check sensor 5V reference and ground integrity with meter; verify reference ~5.0 V and good ground
  • Wiggle wiring harness while watching live data for intermittent changes
  • Compare FRP sensor reading with a mechanical fuel pressure gauge if available

Signal parameters

  • Sensor type: typically 3-wire (5V reference, signal, ground)
  • Expected reference voltage: ~5.0 V (key ON)
  • Expected signal voltage range: typically 0.5–4.5 V depending on pressure (varies by model)
  • High-circuit fault threshold: signal voltage above ~4.7–4.9 V (varies by PCM)
  • Response: signal should change smoothly with pressure changes; stuck-high means voltage remains near reference or above threshold

Diagnostic algorithm

  1. Verify the code and record freeze frame/live data. Check for multiple related DTCs.
  2. Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
  3. With ignition ON (engine OFF), backprobe the connector: verify 5V reference present, good sensor ground, and measure signal voltage. If signal is above expected threshold, suspect short to 5V/12V or failed sensor.
  4. Unplug the sensor and observe PCM behavior: some PCM inputs go to a default value when open — if signal goes low when unplugged, this supports short-to-power. Follow manufacturer guidance before disconnecting parts.
  5. If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
  6. If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
  7. If sensor and wiring test good, inspect PCM power/ground circuits and check for technical service bulletins. Consider PCM replacement only after excluding wiring and sensor faults.
  8. After repairs, clear codes and perform test drive while monitoring live fuel rail pressure and related parameters to confirm the repair.

Likely causes

  • FRP sensor signal wire shorted to constant 12V or to 5V reference
  • Corroded/loose connector pins at the sensor or harness causing intermittent high readings
  • Failed FRP sensor with internal short raising output voltage
  • Damaged sensor power/ground or reference circuit from heat or routing near moving parts

Fault status

⚠️ Status
Fuel Rail Pressure Sensor 'A' Circuit High
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P0190 P0191 P0192 P0194 P0200
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P0193

Generic P — Powertrain

Fuel Rail Pressure Sensor Circuit High Bank 1

Brand: Generic
Type: P — Powertrain
Views: UK: 143 EN: 406 RU: 357
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to battery voltage in the FRP sensor signal circuit
  • Open or corroded ground or 5V reference to the sensor
  • Faulty fuel rail pressure sensor (FRP)
  • Damaged/worn wiring harness or connector (chafing, pin pushed out)
  • PCM internal fault or poor PCM ground
  • Aftermarket electrical modifications or incorrect sensor replacement

Symptoms

  • Check Engine Light (MIL) ON with stored P0193
  • Hard starting, rough idle, poor drivability or loss of power (fuel control affected)
  • Engine may go into limp mode or reduced power
  • Possible fuel trim abnormalities or inconsistent fuel pressure readings in scan data

What to check

  • Retrieve freeze frame and live data with a scan tool; record fuel rail pressure sensor voltage and commanded rail pressure
  • Visually inspect FRP sensor connector and wiring for damage, corrosion, melted insulation or pin back-out
  • Backprobe sensor connector and measure signal voltage with ignition ON (engine OFF)
  • Check sensor 5V reference and ground integrity with meter; verify reference ~5.0 V and good ground
  • Wiggle wiring harness while watching live data for intermittent changes
  • Compare FRP sensor reading with a mechanical fuel pressure gauge if available

Signal parameters

  • Sensor type: typically 3-wire (5V reference, signal, ground)
  • Expected reference voltage: ~5.0 V (key ON)
  • Expected signal voltage range: typically 0.5–4.5 V depending on pressure (varies by model)
  • High-circuit fault threshold: signal voltage above ~4.7–4.9 V (varies by PCM)
  • Response: signal should change smoothly with pressure changes; stuck-high means voltage remains near reference or above threshold

Diagnostic algorithm

  1. Verify the code and record freeze frame/live data. Check for multiple related DTCs.
  2. Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
  3. With ignition ON (engine OFF), backprobe the connector: verify 5V reference present, good sensor ground, and measure signal voltage. If signal is above expected threshold, suspect short to 5V/12V or failed sensor.
  4. Unplug the sensor and observe PCM behavior: some PCM inputs go to a default value when open — if signal goes low when unplugged, this supports short-to-power. Follow manufacturer guidance before disconnecting parts.
  5. If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
  6. If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
  7. If sensor and wiring test good, inspect PCM power/ground circuits and check for technical service bulletins. Consider PCM replacement only after excluding wiring and sensor faults.
  8. After repairs, clear codes and perform test drive while monitoring live fuel rail pressure and related parameters to confirm the repair.

Likely causes

  • FRP sensor signal wire shorted to constant 12V or to 5V reference
  • Corroded/loose connector pins at the sensor or harness causing intermittent high readings
  • Failed FRP sensor with internal short raising output voltage
  • Damaged sensor power/ground or reference circuit from heat or routing near moving parts

Fault status

⚠️ Status
Fuel Rail Pressure Sensor 'A' Circuit High
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P0190 P0191 P0192 P0194 P0200
Workshop Manuals

Available brands with manuals

2
AUDI 11

6-speed manual gearbox 0B1, front-wheel drive — Workshop Manual (Edition 05.2014)

Workshop Manual
Years: 2008 Manual in English Pages: 187 4.9 MB
Short description

Workshop manual for the 6‑speed manual gearbox 0B1 (front‑wheel drive). Includes identification, technical data, gearbox/selector removal & installation procedures, clutch hydraulics, adjustment instructions and front differential service. Applicable to Audi A4, Audi A5 (Coupé, Cabriolet, Sportback) and Audi Q5 as referenced in the manual. Edition: 05.2014.

199,00 UAH
Contents
Key sections:
  • 00 - Technical data
  • 1 Identification
  • 1.1 Gearbox identification
  • 2 Technical data
  • 2.1 Allocation of gearbox to engine
  • 2.1.1 Allocation - Audi A4 2008 ►
  • 2.1.2 Allocation - Audi A5 Coupé 2008 ►, Audi A5 Sportback 2010 ►
  • 2.1.3 Allocation - Audi A5 Cabriolet 2009 ►
  • 2.1.4 Allocation - Audi Q5 2008 ►
  • 2.2 Capacities
  • 3 Transmission layout
  • 3.1 Transmission layout - front‑wheel drive
Buy

Audi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002

Workshop Manual
Years: 1997 Manual in English Pages: 283 4.3 MB
Short description

Service manual for Audi A3 (1997) 1.6L 4‑cylinder (2‑valve) engines (codes AEH, AKL, APF). Includes technical data, engine removal/installation, crankshaft group, cylinder head and valve gear, lubrication, cooling and exhaust system procedures. Edition 07.2002.

199,00 UAH
Contents
Key sections:
  • 00 - Technical data ............................................................1
  • 1 Technical data ............................................................1
  • 1.1 Technical data .......................................................1
  • 1.2 Engine number .......................................................1
  • 1.3 Engine data ........................................................1
  • 10 - Removing and installing engine ..........................................3
  • 1 Removing and installing engine .........................................3
  • 1.1 Removing and installing engine ....................................3
  • 1.2 Removing - vehicles with engine codes AEH, AKL .....................4
  • 1.3 Removing - vehicles with engine code APF ..........................18
  • 1.4 Detaching engine from gearbox ...................................35
  • 1.5 Attaching engine to repair stand ................................38
Buy

AUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017

Workshop Manual
Years: 2004 Manual in English Pages: 235 3.8 MB
Short description

Official workshop manual for the Audi A3 2.0L FSI turbo engine (mechanics). Includes step‑by‑step removal/install procedures, technical data, tightening torques and diagnostic/repair instructions. Intended for professional garages and experienced technicians.

199,00 UAH
Contents
Key sections:
  • 00 - Technical data
  • 1 Engine number
  • 2 Engine data (code letters AXX, BPY, BWA, BHZ, BZC, CDL — capacity, power, torque, bore/stroke, compression, ignition)
  • 3 Safety precautions
  • 3.1 Working on the fuel system
  • 3.2 Procedure before opening high-pressure section
  • 3.3 Working on the cooling system
  • 3.4 Using testers during road test
  • 3.5 Working on the exhaust system
  • 4 General repair instructions
  • 4.1 Cleanliness rules for fuel/injection/turbo
  • 4.2 Checking fuel system for leaks
Buy

Audi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)

Workshop Manual
Years: 2004 Manual in English Pages: 150 68.2 MB
Short description

Workshop manual for the Audi A3 (2004) — Electrical system. Includes procedures for battery, starter, alternator, gauges, wipers, exterior/interior lighting and wiring. Edition 02.2018.

199,00 UAH
Contents
Key sections:
  • List of Workshop Manual Repair Groups
  • - 27 Starter, current supply, CCS
  • - 90 Gauges, instruments
  • - 92 Windscreen wash/wipe system
  • - 94 Lights, bulbs, switches - exterior
  • - 96 Lights, bulbs, switches - interior
  • - 97 Wiring
  • 27 - Starter, current supply, CCS
  • 1 Contact corrosion
  • 2 Battery
  • 2.1 Battery - general notes
  • 2.2 Maintenance-free batteries
Buy

Audi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007

Workshop Manual
Years: 2001–2003 Manual in English Pages: 307 7.3 MB
Short description

Comprehensive workshop manual for Audi A4 (2001) and A4 Cabriolet (2003) with the 4.2 L V8, 5‑valve engine with timing chains (Engine IDs BBK/BHF). Includes step‑by‑step procedures for engine removal/installation, crankshaft and timing chain service, cylinder head/valve gear, lubrication, cooling and exhaust system repairs. Intended for professional technicians and service workshops.

199,00 UAH
Contents
Key sections:
  • 00 - Technical data
  • 1 Engine number
  • 2 Engine data (Codes: BBK / BHF; 4.163 l; 253 kW @7000 rpm; torque 410–420 Nm; bore 84.5 mm; stroke 92.8 mm; compression ratio 11.5; RON 98)
  • 3 Safety precautions
  • 4 General repair instructions (cleanliness, fuel system, contact corrosion)
  • 10 - Removing and installing engine
  • 1 Removing engine - vehicles with manual gearbox
  • 1.1 Removing engine (tools, drain fluids, remove bumper, lock carrier, disconnect wiring, fuel, coolant, A/C lines, suspension components, propshaft, exhaust, support engine on platform, lower assembly)
  • 1.2 Separating engine and gearbox (subframe removal, support sets, remove front exhaust pipes, bolt sequence)
  • 1.3 Securing engine to engine and gearbox stand (lifting tackle, VAS 6095 support)
  • 1.4 Installing engine (clutch remarks, alignment, torque values)
  • 2 Removing and installing engine - vehicles with automatic gearbox (procedure parallels manual gearbox with ATF/torque converter notes)
Buy

Audi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)

Workshop Manual
Years: 2001 Manual in English Pages: 259 2.0 MB
Short description

Workshop Manual for Audi A4 and A4 Cabriolet — Auxiliary Heater (Edition 08.2004). Contains self-diagnosis procedures, fault tables, electrical and fuel system checks, final control tests, CO₂ exhaust adjustment and step-by-step removal/installation and repair procedures. Intended for professional workshop use.

199,00 UAH
Contents
Key sections:
  • 01 - Self-diagnosis, electrical checks
  • 1 Auxiliary heater self-diagnosis
  • 1.1 Technical data of self-diagnosis
  • 1.2 Function
  • 1.3 Fault recognition
  • 1.4 Guided fault-finding
  • 1.5 Technical data of self-diagnosis
  • 1.6 Test requirements for self-diagnosis
  • 1.7 Safety precautions
  • 2 Self-diagnosis procedure
  • 2.1 Connecting vehicle diagnostic VAS 5051A/K-wire adapter
  • 2.1.1 Control unit identification
Buy

Audi A4 / A4 Cabriolet (1.8T 4‑cyl turbo) — Motronic Injection & Ignition System Service Manual (Edition 01.2015)

Workshop Manual
Years: 2001 Manual in English Pages: 34 851.0 KB
Short description

Service manual for Audi A4 (2001‑) and A4 Cabriolet (2003‑) with 1.8L 4‑cylinder turbo engines. Covers Motronic fuel injection and ignition systems, diagnostic and maintenance procedures. Includes technical data, removal/installation steps and system checks.

199,00 UAH
Contents
Key sections:
  • 24 - Mixture preparation - injection
  • 1 Safety precautions and rules for cleanliness
  • 1.1 General notes on self-diagnosis
  • 1.2 Safety precautions when using testers and measuring instruments during a road test
  • 1.3 Rules for cleanliness and instructions for working on fuel system
  • 1.4 Checking vacuum system
  • 2 Injection system
  • 2.1 Technical data
  • 2.2 Overview of fitting locations - injection system
  • 3 Intake manifold
  • 3.1 Exploded view - intake manifold
  • 3.2 Removing and installing intake manifold
Buy

Audi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)

Workshop Manual
Years: 2003 Manual in English Pages: 369 9.1 MB
Short description

Comprehensive workshop manual for the Audi A8 (2003) electrical system — Edition 08.2014. Covers battery, alternator, starter, instrument cluster, wiper/washer systems, exterior/interior lighting and wiring repair procedures with step-by-step illustrations. Includes diagnostic and adjustment procedures and torque/data specifications.

199,00 UAH
Contents
Key sections:
  • 27 - Starter, current supply, CCS
  • 1 Contact corrosion
  • 2 Battery
  • 2.1 Battery - general notes
  • 2.2 Maintenance-free batteries
  • 2.3 Disconnecting and connecting battery
  • 2.4 Removing and installing battery
  • - Remove luggage compartment side trim (right-side)
  • - Connect battery charger for back-up power
  • - Detach earth and positive cables, central venting hose
  • - Remove battery retainer plate and lift battery out
  • - Installation notes, adaptation via Vehicle diagnostic tester
Buy

Audi Q4 e-tron (Type F4) - Self-study Programme SSP 685

Workshop Manual
Years: 2021 Manual in English Pages: 186 82.7 MB
Short description

Official Audi Service Training self‑study programme SSP 685 for the Audi Q4 e‑tron (Type F4). Covers body, power units, power transmission, running gear, electrics & electronics, high‑voltage system, thermal management, driver assist and infotainment. Intended for internal service training and technical familiarisation; not a workshop repair manual.

199,00 UAH
Contents
Key sections:
  • Introduction
  • - Introduction to Audi Q4 e-tron
  • - Dimensions
  • Body
  • - Body structure and materials
  • - Joining techniques
  • - Securing high-voltage battery and force progression
  • - Body assembly (doors, rear lid, panoramic sunroof)
  • - Dash panel and centre console
  • Power units
  • - Technical data: rear electric motor (VX90)
  • - Technical data: front electric motor (VX89)
Buy

Audi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)

Workshop Manual
Years: 2018 Manual in English Pages: 645 14.8 MB
Short description

Workshop manual for the Audi Q8 (2018) — Electrical System. Includes technical data, safety notes and step‑by‑step repair procedures for battery/charging, starter/alternator, lighting, washer/wiper and wiring. Edition 05.2019.

199,00 UAH
Contents
Key sections:
  • 00 - Technical data
  • 1 Safety precautions
  • 1.1 Safety precautions when working on vehicles with start/stop system
  • 1.2 Safety precautions when using testers and measuring instruments during a road test
  • 1.3 Notes on use and safety for LED headlights and Audi laser lights
  • 2 Repair notes
  • 2.1 Rules for cleanliness
  • 2.2 General notes
  • 2.3 Contact corrosion
  • 2.4 ESD (electrostatic discharge) workplace
  • 2.5 Routing and attachment of lines and wiring
  • 2.6 Identification plates
Buy

Audi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)

Workshop Manual
Years: 2008–2019 Manual in English Pages: 128 11.1 MB
Short description

Service manual for the 7‑Speed dual‑clutch (DSG) transmissions 0CJ/0CL/0CK/0DN/0DP/0HL fitted to various Audi models. Includes repair information, clutch and gearbox disassembly/assembly, mechatronic and hydraulic system procedures, seals and differential work. Edition 05.2018.

199,00 UAH
Contents
Key sections:
  • 00 - General, Technical Data
  • 1 Repair Information
  • 1.1 General Repair Information
  • 1.2 Contact Corrosion
  • 1.3 ATF Pump, Deactivating and Draining the Hydraulic Pump Reservoir
  • 2 Rules for Cleanliness when Working on DSG® Transmission
  • 30 - Clutch
  • 1 Clutch
  • 1.1 Overview - Flywheel and Dual Clutch
  • 1.2 Flywheel, Removing and Installing
  • 1.3 Dual Clutch, Removing and Installing
  • 1.4 Input Shaft Seal, Replacing
Buy
LAND ROVER 3

Land Rover Defender 300Tdi — Workshop Manual (1996 model year)

Workshop Manual
Defender 300Tdi Years: 1996 Manual in English 7.5 MB
Short description

Official workshop manual for the Land Rover Defender 300Tdi (from 1996 model year). Contains specifications, adjustment, fault diagnosis and step-by-step repair and overhaul procedures for engine, transmission, axles, suspension, brakes, electrical and body. Intended for dealer workshops and trained technicians.

199,00 UAH
Contents
Key sections:
  • 01 INTRODUCTION
  • 04 GENERAL SPECIFICATION DATA
  • 05 ENGINE TUNING DATA
  • 07 GENERAL FITTING REMINDERS
  • 09 LUBRICANTS, FLUIDS AND CAPACITIES
  • 10 MAINTENANCE
  • 12 ENGINE Tdi
  • - Description and operation
  • - Fault diagnosis
  • - Adjustment
  • - Repair and overhaul procedures
  • 19 FUEL SYSTEM Tdi
Buy

Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)

Workshop Manual
Defender Years: 1999–2002 Manual in English 7.6 MB
Short description

Workshop Manual Supplement and Body Repair Manual for the Land Rover Defender. Includes general specifications, maintenance schedules, tuning data and step‑by‑step repair procedures for engine, transmission, suspension, brakes, electrical and body repairs. Covers Defender models from 1999 and 2002 model years.

199,00 UAH
Contents
Key sections:
  • 01 - INTRODUCTION
  • - Introduction
  • - Dimensions
  • - References
  • - Repairs and replacements
  • - Poisonous substances
  • - Fuel handling precautions
  • - Synthetic rubber
  • - Recommended sealants
  • - Used engine oil precautions
  • - Accessories and conversions
  • - Wheels and tyres
Buy

Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)

Workshop Manual
Manual in English Pages: 494 7.1 MB
Short description

Land Rover Range Rover Electrical Library (LRL 0453ENG). Comprehensive manual covering fuse details, earth points, system descriptions, diagnostics and connector pin-outs for electrical troubleshooting and repair. Intended for technicians and service workshops.

199,00 UAH
Contents
Key sections:
  • 1 INTRODUCTION
  • 1.1 About this document
  • 1.2 Battery voltage
  • 1.3 Electrical precautions
  • 1.4 Battery disconnecting / charging
  • 1.5 Disciplines / greases
  • 1.6 Abbreviations
  • 1.7 HeVAC, sensors abbreviations
  • 1.8 How to use this document
  • 1.9 Connector detail format
  • 1.10 Fault diagnosis
  • 1.11 Wire colour codes
Buy
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P0193

GWM P — Powertrain

- High fuel temperature sensor

Brand: GWM
Type: P — Powertrain
Views: UK: 36 EN: 62 RU: 88
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to battery voltage in the FRP sensor signal circuit
  • Open or corroded ground or 5V reference to the sensor
  • Faulty fuel rail pressure sensor (FRP)
  • Damaged/worn wiring harness or connector (chafing, pin pushed out)
  • PCM internal fault or poor PCM ground
  • Aftermarket electrical modifications or incorrect sensor replacement

Symptoms

  • Check Engine Light (MIL) ON with stored P0193
  • Hard starting, rough idle, poor drivability or loss of power (fuel control affected)
  • Engine may go into limp mode or reduced power
  • Possible fuel trim abnormalities or inconsistent fuel pressure readings in scan data

What to check

  • Retrieve freeze frame and live data with a scan tool; record fuel rail pressure sensor voltage and commanded rail pressure
  • Visually inspect FRP sensor connector and wiring for damage, corrosion, melted insulation or pin back-out
  • Backprobe sensor connector and measure signal voltage with ignition ON (engine OFF)
  • Check sensor 5V reference and ground integrity with meter; verify reference ~5.0 V and good ground
  • Wiggle wiring harness while watching live data for intermittent changes
  • Compare FRP sensor reading with a mechanical fuel pressure gauge if available

Signal parameters

  • Sensor type: typically 3-wire (5V reference, signal, ground)
  • Expected reference voltage: ~5.0 V (key ON)
  • Expected signal voltage range: typically 0.5–4.5 V depending on pressure (varies by model)
  • High-circuit fault threshold: signal voltage above ~4.7–4.9 V (varies by PCM)
  • Response: signal should change smoothly with pressure changes; stuck-high means voltage remains near reference or above threshold

Diagnostic algorithm

  1. Verify the code and record freeze frame/live data. Check for multiple related DTCs.
  2. Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
  3. With ignition ON (engine OFF), backprobe the connector: verify 5V reference present, good sensor ground, and measure signal voltage. If signal is above expected threshold, suspect short to 5V/12V or failed sensor.
  4. Unplug the sensor and observe PCM behavior: some PCM inputs go to a default value when open — if signal goes low when unplugged, this supports short-to-power. Follow manufacturer guidance before disconnecting parts.
  5. If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
  6. If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
  7. If sensor and wiring test good, inspect PCM power/ground circuits and check for technical service bulletins. Consider PCM replacement only after excluding wiring and sensor faults.
  8. After repairs, clear codes and perform test drive while monitoring live fuel rail pressure and related parameters to confirm the repair.

Likely causes

  • FRP sensor signal wire shorted to constant 12V or to 5V reference
  • Corroded/loose connector pins at the sensor or harness causing intermittent high readings
  • Failed FRP sensor with internal short raising output voltage
  • Damaged sensor power/ground or reference circuit from heat or routing near moving parts

Fault status

⚠️ Status
Fuel Rail Pressure Sensor 'A' Circuit High
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P0190 P0191 P0192 P0194 P0200
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P0193

HUMMER P — Powertrain

Fuel Rail Pressure Sensor Circuit High Voltage

Brand: HUMMER
Type: P — Powertrain
Views: UK: 119 EN: 291 RU: 289
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to battery voltage in the FRP sensor signal circuit
  • Open or corroded ground or 5V reference to the sensor
  • Faulty fuel rail pressure sensor (FRP)
  • Damaged/worn wiring harness or connector (chafing, pin pushed out)
  • PCM internal fault or poor PCM ground
  • Aftermarket electrical modifications or incorrect sensor replacement

Symptoms

  • Check Engine Light (MIL) ON with stored P0193
  • Hard starting, rough idle, poor drivability or loss of power (fuel control affected)
  • Engine may go into limp mode or reduced power
  • Possible fuel trim abnormalities or inconsistent fuel pressure readings in scan data

What to check

  • Retrieve freeze frame and live data with a scan tool; record fuel rail pressure sensor voltage and commanded rail pressure
  • Visually inspect FRP sensor connector and wiring for damage, corrosion, melted insulation or pin back-out
  • Backprobe sensor connector and measure signal voltage with ignition ON (engine OFF)
  • Check sensor 5V reference and ground integrity with meter; verify reference ~5.0 V and good ground
  • Wiggle wiring harness while watching live data for intermittent changes
  • Compare FRP sensor reading with a mechanical fuel pressure gauge if available

Signal parameters

  • Sensor type: typically 3-wire (5V reference, signal, ground)
  • Expected reference voltage: ~5.0 V (key ON)
  • Expected signal voltage range: typically 0.5–4.5 V depending on pressure (varies by model)
  • High-circuit fault threshold: signal voltage above ~4.7–4.9 V (varies by PCM)
  • Response: signal should change smoothly with pressure changes; stuck-high means voltage remains near reference or above threshold

Diagnostic algorithm

  1. Verify the code and record freeze frame/live data. Check for multiple related DTCs.
  2. Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
  3. With ignition ON (engine OFF), backprobe the connector: verify 5V reference present, good sensor ground, and measure signal voltage. If signal is above expected threshold, suspect short to 5V/12V or failed sensor.
  4. Unplug the sensor and observe PCM behavior: some PCM inputs go to a default value when open — if signal goes low when unplugged, this supports short-to-power. Follow manufacturer guidance before disconnecting parts.
  5. If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
  6. If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
  7. If sensor and wiring test good, inspect PCM power/ground circuits and check for technical service bulletins. Consider PCM replacement only after excluding wiring and sensor faults.
  8. After repairs, clear codes and perform test drive while monitoring live fuel rail pressure and related parameters to confirm the repair.

Likely causes

  • FRP sensor signal wire shorted to constant 12V or to 5V reference
  • Corroded/loose connector pins at the sensor or harness causing intermittent high readings
  • Failed FRP sensor with internal short raising output voltage
  • Damaged sensor power/ground or reference circuit from heat or routing near moving parts

Fault status

⚠️ Status
Fuel Rail Pressure Sensor 'A' Circuit High
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P0190 P0191 P0192 P0194 P0200
HTML Workshop Manuals AI manual library for HUMMER Click to show available manuals 8

HUMMER 2010 Hummer H3 Alpha

HTML Manual
Hummer H3 Alpha Years: 2010 Manual in English Sections: 37,470 AI chunks: 37,470
Short description
HUMMER · Hummer H3 Alpha · 2010
Open manual

HUMMER 2010 Hummer H3 Base

HTML Manual
Hummer H3 Base Years: 2010 Manual in English Sections: 37,150 AI chunks: 37,150
Short description
HUMMER · Hummer H3 Base · 2010
Open manual

HUMMER 2010 Hummer H3 Base

HTML Manual
Hummer H3 Base Years: 2010 Manual in English Sections: 37,523 AI chunks: 37,523
Short description
HUMMER · Hummer H3 Base · 2010
Open manual

HUMMER 2010 Hummer H3 L5-3 3.7L

HTML Manual
Hummer H3 L5-3 Years: 2010 Manual in English Sections: 14,383 AI chunks: 14,383
Short description
HUMMER · Hummer H3 L5-3 · 2010 · 3.7L
Open manual

HUMMER 2010 Hummer H3 V8-5 V8-5.3L

HTML Manual
Hummer H3 V8-5 Years: 2010 Manual in English Sections: 14,606 AI chunks: 14,606
Short description
HUMMER · Hummer H3 V8-5 · 2010 · V8-5.3L
Open manual

HUMMER 2010 Hummer H3T Alpha

HTML Manual
Hummer H3T Alpha Years: 2010 Manual in English Sections: 37,368 AI chunks: 37,368
Short description
HUMMER · Hummer H3T Alpha · 2010
Open manual

HUMMER 2010 Hummer H3T Base

HTML Manual
Hummer H3T Base Years: 2010 Manual in English Sections: 37,048 AI chunks: 37,048
Short description
HUMMER · Hummer H3T Base · 2010
Open manual

HUMMER 2010 Hummer H3T Base

HTML Manual
Hummer H3T Base Years: 2010 Manual in English Sections: 37,425 AI chunks: 37,425
Short description
HUMMER · Hummer H3T Base · 2010
Open manual
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P0193

ISUZU P — Powertrain

Fuel Rail Pressure Sensor Circuit High

Brand: ISUZU
Type: P — Powertrain
Views: UK: 149 EN: 444 RU: 331
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to battery voltage in the FRP sensor signal circuit
  • Open or corroded ground or 5V reference to the sensor
  • Faulty fuel rail pressure sensor (FRP)
  • Damaged/worn wiring harness or connector (chafing, pin pushed out)
  • PCM internal fault or poor PCM ground
  • Aftermarket electrical modifications or incorrect sensor replacement

Symptoms

  • Check Engine Light (MIL) ON with stored P0193
  • Hard starting, rough idle, poor drivability or loss of power (fuel control affected)
  • Engine may go into limp mode or reduced power
  • Possible fuel trim abnormalities or inconsistent fuel pressure readings in scan data

What to check

  • Retrieve freeze frame and live data with a scan tool; record fuel rail pressure sensor voltage and commanded rail pressure
  • Visually inspect FRP sensor connector and wiring for damage, corrosion, melted insulation or pin back-out
  • Backprobe sensor connector and measure signal voltage with ignition ON (engine OFF)
  • Check sensor 5V reference and ground integrity with meter; verify reference ~5.0 V and good ground
  • Wiggle wiring harness while watching live data for intermittent changes
  • Compare FRP sensor reading with a mechanical fuel pressure gauge if available

Signal parameters

  • Sensor type: typically 3-wire (5V reference, signal, ground)
  • Expected reference voltage: ~5.0 V (key ON)
  • Expected signal voltage range: typically 0.5–4.5 V depending on pressure (varies by model)
  • High-circuit fault threshold: signal voltage above ~4.7–4.9 V (varies by PCM)
  • Response: signal should change smoothly with pressure changes; stuck-high means voltage remains near reference or above threshold

Diagnostic algorithm

  1. Verify the code and record freeze frame/live data. Check for multiple related DTCs.
  2. Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
  3. With ignition ON (engine OFF), backprobe the connector: verify 5V reference present, good sensor ground, and measure signal voltage. If signal is above expected threshold, suspect short to 5V/12V or failed sensor.
  4. Unplug the sensor and observe PCM behavior: some PCM inputs go to a default value when open — if signal goes low when unplugged, this supports short-to-power. Follow manufacturer guidance before disconnecting parts.
  5. If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
  6. If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
  7. If sensor and wiring test good, inspect PCM power/ground circuits and check for technical service bulletins. Consider PCM replacement only after excluding wiring and sensor faults.
  8. After repairs, clear codes and perform test drive while monitoring live fuel rail pressure and related parameters to confirm the repair.

Likely causes

  • FRP sensor signal wire shorted to constant 12V or to 5V reference
  • Corroded/loose connector pins at the sensor or harness causing intermittent high readings
  • Failed FRP sensor with internal short raising output voltage
  • Damaged sensor power/ground or reference circuit from heat or routing near moving parts

Fault status

⚠️ Status
Fuel Rail Pressure Sensor 'A' Circuit High
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P0190 P0191 P0192 P0194 P0200
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P0193

LAND ROVER P — Powertrain

Fuel rail pressure sensor circuit input high

Brand: LAND ROVER
Type: P — Powertrain
Views: UK: 90 EN: 224 RU: 253
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to battery voltage in the FRP sensor signal circuit
  • Open or corroded ground or 5V reference to the sensor
  • Faulty fuel rail pressure sensor (FRP)
  • Damaged/worn wiring harness or connector (chafing, pin pushed out)
  • PCM internal fault or poor PCM ground
  • Aftermarket electrical modifications or incorrect sensor replacement

Symptoms

  • Check Engine Light (MIL) ON with stored P0193
  • Hard starting, rough idle, poor drivability or loss of power (fuel control affected)
  • Engine may go into limp mode or reduced power
  • Possible fuel trim abnormalities or inconsistent fuel pressure readings in scan data

What to check

  • Retrieve freeze frame and live data with a scan tool; record fuel rail pressure sensor voltage and commanded rail pressure
  • Visually inspect FRP sensor connector and wiring for damage, corrosion, melted insulation or pin back-out
  • Backprobe sensor connector and measure signal voltage with ignition ON (engine OFF)
  • Check sensor 5V reference and ground integrity with meter; verify reference ~5.0 V and good ground
  • Wiggle wiring harness while watching live data for intermittent changes
  • Compare FRP sensor reading with a mechanical fuel pressure gauge if available

Signal parameters

  • Sensor type: typically 3-wire (5V reference, signal, ground)
  • Expected reference voltage: ~5.0 V (key ON)
  • Expected signal voltage range: typically 0.5–4.5 V depending on pressure (varies by model)
  • High-circuit fault threshold: signal voltage above ~4.7–4.9 V (varies by PCM)
  • Response: signal should change smoothly with pressure changes; stuck-high means voltage remains near reference or above threshold

Diagnostic algorithm

  1. Verify the code and record freeze frame/live data. Check for multiple related DTCs.
  2. Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
  3. With ignition ON (engine OFF), backprobe the connector: verify 5V reference present, good sensor ground, and measure signal voltage. If signal is above expected threshold, suspect short to 5V/12V or failed sensor.
  4. Unplug the sensor and observe PCM behavior: some PCM inputs go to a default value when open — if signal goes low when unplugged, this supports short-to-power. Follow manufacturer guidance before disconnecting parts.
  5. If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
  6. If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
  7. If sensor and wiring test good, inspect PCM power/ground circuits and check for technical service bulletins. Consider PCM replacement only after excluding wiring and sensor faults.
  8. After repairs, clear codes and perform test drive while monitoring live fuel rail pressure and related parameters to confirm the repair.

Likely causes

  • FRP sensor signal wire shorted to constant 12V or to 5V reference
  • Corroded/loose connector pins at the sensor or harness causing intermittent high readings
  • Failed FRP sensor with internal short raising output voltage
  • Damaged sensor power/ground or reference circuit from heat or routing near moving parts

Fault status

⚠️ Status
Fuel Rail Pressure Sensor 'A' Circuit High
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P0190 P0191 P0192 P0194 P0200
HTML Workshop Manuals AI manual library for LAND ROVER Click to show available manuals 25

LAND ROVER 2018 Discovery HSE Luxury, 3_0L Eng VIN K

HTML Manual
Discovery HSE Luxury, 3_0L Eng VIN K Years: 2018 Manual in English Sections: 52,300
Short description
LAND ROVER · Discovery HSE Luxury, 3_0L Eng VIN K · 2018 · 3.0L
Open manual

LAND ROVER 2018 Discovery HSE Luxury, 3.0L Eng VIN V

HTML Manual
Discovery HSE Luxury, 3.0L Eng VIN V Years: 2018 Manual in English Sections: 50,193
Short description
LAND ROVER · Discovery HSE Luxury, 3.0L Eng VIN V · 2018 · 3.0L
Open manual

LAND ROVER 2018 Discovery HSE, 3.0L Eng VIN K

HTML Manual
Discovery HSE, 3.0L Eng VIN K Years: 2018 Manual in English Sections: 52,292
Short description
LAND ROVER · Discovery HSE, 3.0L Eng VIN K · 2018 · 3.0L
Open manual

LAND ROVER 2018 Discovery HSE, 3.0L Eng VIN V

HTML Manual
Discovery HSE, 3.0L Eng VIN V Years: 2018 Manual in English Sections: 50,193
Short description
LAND ROVER · Discovery HSE, 3.0L Eng VIN V · 2018 · 3.0L
Open manual

LAND ROVER 2018 Discovery Sport HSE

HTML Manual
Discovery Sport HSE Years: 2018 Manual in English Sections: 50,414
Short description
LAND ROVER · Discovery Sport HSE · 2018
Open manual

LAND ROVER 2018 Discovery Sport HSE Luxury

HTML Manual
Discovery Sport HSE Luxury Years: 2018 Manual in English Sections: 50,419
Short description
LAND ROVER · Discovery Sport HSE Luxury · 2018
Open manual

LAND ROVER 2018 Discovery Sport SE

HTML Manual
Discovery Sport SE Years: 2018 Manual in English Sections: 50,419
Short description
LAND ROVER · Discovery Sport SE · 2018
Open manual

LAND ROVER 2015 Discovery Sport HSE

HTML Manual
Discovery Sport HSE Years: 2015 Manual in English Sections: 61,541 AI chunks: 61,541
Short description
LAND ROVER · Discovery Sport HSE · 2015
Open manual
Workshop Manuals

Repair manuals for LAND ROVER

3

Land Rover Defender 300Tdi — Workshop Manual (1996 model year)

Workshop Manual
Defender 300Tdi Years: 1996 Manual in English 7.5 MB
Short description

Official workshop manual for the Land Rover Defender 300Tdi (from 1996 model year). Contains specifications, adjustment, fault diagnosis and step-by-step repair and overhaul procedures for engine, transmission, axles, suspension, brakes, electrical and body. Intended for dealer workshops and trained technicians.

199,00 UAH
Contents
Key sections:
  • 01 INTRODUCTION
  • 04 GENERAL SPECIFICATION DATA
  • 05 ENGINE TUNING DATA
  • 07 GENERAL FITTING REMINDERS
  • 09 LUBRICANTS, FLUIDS AND CAPACITIES
  • 10 MAINTENANCE
  • 12 ENGINE Tdi
  • - Description and operation
  • - Fault diagnosis
  • - Adjustment
  • - Repair and overhaul procedures
  • 19 FUEL SYSTEM Tdi
Buy

Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)

Workshop Manual
Defender Years: 1999–2002 Manual in English 7.6 MB
Short description

Workshop Manual Supplement and Body Repair Manual for the Land Rover Defender. Includes general specifications, maintenance schedules, tuning data and step‑by‑step repair procedures for engine, transmission, suspension, brakes, electrical and body repairs. Covers Defender models from 1999 and 2002 model years.

199,00 UAH
Contents
Key sections:
  • 01 - INTRODUCTION
  • - Introduction
  • - Dimensions
  • - References
  • - Repairs and replacements
  • - Poisonous substances
  • - Fuel handling precautions
  • - Synthetic rubber
  • - Recommended sealants
  • - Used engine oil precautions
  • - Accessories and conversions
  • - Wheels and tyres
Buy

Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)

Workshop Manual
Manual in English Pages: 494 7.1 MB
Short description

Land Rover Range Rover Electrical Library (LRL 0453ENG). Comprehensive manual covering fuse details, earth points, system descriptions, diagnostics and connector pin-outs for electrical troubleshooting and repair. Intended for technicians and service workshops.

199,00 UAH
Contents
Key sections:
  • 1 INTRODUCTION
  • 1.1 About this document
  • 1.2 Battery voltage
  • 1.3 Electrical precautions
  • 1.4 Battery disconnecting / charging
  • 1.5 Disciplines / greases
  • 1.6 Abbreviations
  • 1.7 HeVAC, sensors abbreviations
  • 1.8 How to use this document
  • 1.9 Connector detail format
  • 1.10 Fault diagnosis
  • 1.11 Wire colour codes
Buy
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P0193

MITSUBISHI P — Powertrain

Fuel pressure sensor high input

Brand: MITSUBISHI
Type: P — Powertrain
Views: UK: 115 EN: 301 RU: 289
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to battery voltage in the FRP sensor signal circuit
  • Open or corroded ground or 5V reference to the sensor
  • Faulty fuel rail pressure sensor (FRP)
  • Damaged/worn wiring harness or connector (chafing, pin pushed out)
  • PCM internal fault or poor PCM ground
  • Aftermarket electrical modifications or incorrect sensor replacement

Symptoms

  • Check Engine Light (MIL) ON with stored P0193
  • Hard starting, rough idle, poor drivability or loss of power (fuel control affected)
  • Engine may go into limp mode or reduced power
  • Possible fuel trim abnormalities or inconsistent fuel pressure readings in scan data

What to check

  • Retrieve freeze frame and live data with a scan tool; record fuel rail pressure sensor voltage and commanded rail pressure
  • Visually inspect FRP sensor connector and wiring for damage, corrosion, melted insulation or pin back-out
  • Backprobe sensor connector and measure signal voltage with ignition ON (engine OFF)
  • Check sensor 5V reference and ground integrity with meter; verify reference ~5.0 V and good ground
  • Wiggle wiring harness while watching live data for intermittent changes
  • Compare FRP sensor reading with a mechanical fuel pressure gauge if available

Signal parameters

  • Sensor type: typically 3-wire (5V reference, signal, ground)
  • Expected reference voltage: ~5.0 V (key ON)
  • Expected signal voltage range: typically 0.5–4.5 V depending on pressure (varies by model)
  • High-circuit fault threshold: signal voltage above ~4.7–4.9 V (varies by PCM)
  • Response: signal should change smoothly with pressure changes; stuck-high means voltage remains near reference or above threshold

Diagnostic algorithm

  1. Verify the code and record freeze frame/live data. Check for multiple related DTCs.
  2. Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
  3. With ignition ON (engine OFF), backprobe the connector: verify 5V reference present, good sensor ground, and measure signal voltage. If signal is above expected threshold, suspect short to 5V/12V or failed sensor.
  4. Unplug the sensor and observe PCM behavior: some PCM inputs go to a default value when open — if signal goes low when unplugged, this supports short-to-power. Follow manufacturer guidance before disconnecting parts.
  5. If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
  6. If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
  7. If sensor and wiring test good, inspect PCM power/ground circuits and check for technical service bulletins. Consider PCM replacement only after excluding wiring and sensor faults.
  8. After repairs, clear codes and perform test drive while monitoring live fuel rail pressure and related parameters to confirm the repair.

Likely causes

  • FRP sensor signal wire shorted to constant 12V or to 5V reference
  • Corroded/loose connector pins at the sensor or harness causing intermittent high readings
  • Failed FRP sensor with internal short raising output voltage
  • Damaged sensor power/ground or reference circuit from heat or routing near moving parts

Fault status

⚠️ Status
Fuel Rail Pressure Sensor 'A' Circuit High
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P0190 P0191 P0192 P0194 P0200
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .