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Home / DTC / C1246 — Brake Lining Wear Circuit Open

C1246 — Brake Lining Wear Circuit Open

Detailed page for trouble code C1246.

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Code

C1246

HUMMER C — Chassis

Brake Lining Wear Circuit Open

Brand: HUMMER
Type: C — Chassis
Views: UK: 6 EN: 15 RU: 9
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or chafed sensor wire at the caliper or suspension movement point
  • Corroded, loose or disconnected connector at the wear sensor or control module
  • Failed or damaged pad wear sensor (broken element)
  • Aftermarket or replacement pads without a wear sensor installed
  • Faulty ABS/Brake control module or internal driver fault (less common)
  • Water intrusion or corrosion in harness or connector

Symptoms

  • Brake pad wear warning light or BRAKE message on dash
  • Illumination of ABS or traction control warning lamps in some systems
  • One wheel brake pad not reporting wear (uneven wear may go unnoticed)
  • Stored DTC C1246 in chassis control/ABS module

What to check

  • Read and record freeze-frame and related ABS/chassis codes with a scan tool
  • Visually inspect all four pad wear sensors, connector plugs and harness routing at each wheel/caliper for damage, corrosion, or separation
  • Separate connector and inspect terminals for corrosion, bent pins, or water intrusion
  • Check for aftermarket pads or missing sensor clips on replaced pads
  • Perform a wiggle test on the harness while monitoring for change in status with a scan tool

Signal parameters

  • Intact pad-wear sensor: circuit shows continuity (low resistance). Exact resistance varies by design; consult service manual. Open circuit: infinite/OL resistance.
  • Some systems provide a switched voltage from module — expect ~0–12 V depending on design. With sensor connected and intact voltage may be pulled to ground or to reference; consult vehicle wiring diagram.
  • Compare readings to service manual values for the specific wheel/sensor.

Diagnostic algorithm

  1. Use a scan tool to confirm C1246 and check for any related codes (ABS, wheel speed, other C12xx codes). Record which wheel is indicated if available.
  2. Visually inspect the pad wear sensor and harness at the wheel specified. Look for chaffing where the lead passes through brackets or rubber boots.
  3. Disconnect the suspect sensor connector and measure resistance across the sensor. If resistance is infinite/OL, the sensor is open and should be replaced.
  4. If the sensor shows continuity, check continuity between the sensor connector pin and the ABS/control module connector pin. Repair any open circuit in the harness (splice, replace harness section, repair terminal).
  5. If wiring and sensor check good, inspect module connector for corrosion and check for proper reference voltage/ground at the module pin with a wiring diagram. Replace or repair terminals as needed.
  6. If wiring and sensor are good and module outputs are correct, suspect internal module fault and follow factory procedures to verify/replace the ABS/chassis control module.
  7. After repair or replacement, clear codes, perform relearn procedures if required, and test drive to confirm code does not return.

Likely causes

  • Broken/frayed sensor lead at caliper (most common)
  • Disconnected or corroded connector at wheel or module
  • Damaged pad wear sensor element

Fault status

⚠️ Status
Brake Lining Wear Circuit Open — the brake pad wear sensor circuit is reporting an open (no continuity). This will trigger a brake pad wear/maintenance warning and should be inspected and repaired.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1244 C1245 C1247 C1235 C0035
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Code

C1246

HYUNDAI C — Chassis

Front Left(FL) Height Sensor High | Height Sensor Supply Voltage Failure - LH

Brand: HYUNDAI
Type: C — Chassis
Views: UK: 14 EN: 22 RU: 16
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or chafed sensor wire at the caliper or suspension movement point
  • Corroded, loose or disconnected connector at the wear sensor or control module
  • Failed or damaged pad wear sensor (broken element)
  • Aftermarket or replacement pads without a wear sensor installed
  • Faulty ABS/Brake control module or internal driver fault (less common)
  • Water intrusion or corrosion in harness or connector

Symptoms

  • Brake pad wear warning light or BRAKE message on dash
  • Illumination of ABS or traction control warning lamps in some systems
  • One wheel brake pad not reporting wear (uneven wear may go unnoticed)
  • Stored DTC C1246 in chassis control/ABS module

What to check

  • Read and record freeze-frame and related ABS/chassis codes with a scan tool
  • Visually inspect all four pad wear sensors, connector plugs and harness routing at each wheel/caliper for damage, corrosion, or separation
  • Separate connector and inspect terminals for corrosion, bent pins, or water intrusion
  • Check for aftermarket pads or missing sensor clips on replaced pads
  • Perform a wiggle test on the harness while monitoring for change in status with a scan tool

Signal parameters

  • Intact pad-wear sensor: circuit shows continuity (low resistance). Exact resistance varies by design; consult service manual. Open circuit: infinite/OL resistance.
  • Some systems provide a switched voltage from module — expect ~0–12 V depending on design. With sensor connected and intact voltage may be pulled to ground or to reference; consult vehicle wiring diagram.
  • Compare readings to service manual values for the specific wheel/sensor.

Diagnostic algorithm

  1. Use a scan tool to confirm C1246 and check for any related codes (ABS, wheel speed, other C12xx codes). Record which wheel is indicated if available.
  2. Visually inspect the pad wear sensor and harness at the wheel specified. Look for chaffing where the lead passes through brackets or rubber boots.
  3. Disconnect the suspect sensor connector and measure resistance across the sensor. If resistance is infinite/OL, the sensor is open and should be replaced.
  4. If the sensor shows continuity, check continuity between the sensor connector pin and the ABS/control module connector pin. Repair any open circuit in the harness (splice, replace harness section, repair terminal).
  5. If wiring and sensor check good, inspect module connector for corrosion and check for proper reference voltage/ground at the module pin with a wiring diagram. Replace or repair terminals as needed.
  6. If wiring and sensor are good and module outputs are correct, suspect internal module fault and follow factory procedures to verify/replace the ABS/chassis control module.
  7. After repair or replacement, clear codes, perform relearn procedures if required, and test drive to confirm code does not return.

Likely causes

  • Broken/frayed sensor lead at caliper (most common)
  • Disconnected or corroded connector at wheel or module
  • Damaged pad wear sensor element

Fault status

⚠️ Status
Brake Lining Wear Circuit Open — the brake pad wear sensor circuit is reporting an open (no continuity). This will trigger a brake pad wear/maintenance warning and should be inspected and repaired.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1244 C1245 C1247 C1235 C0035
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Code

C1246

LAND ROVER C — Chassis

Right rear output valve

Brand: LAND ROVER
Type: C — Chassis
Views: UK: 4 EN: 9 RU: 11
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or chafed sensor wire at the caliper or suspension movement point
  • Corroded, loose or disconnected connector at the wear sensor or control module
  • Failed or damaged pad wear sensor (broken element)
  • Aftermarket or replacement pads without a wear sensor installed
  • Faulty ABS/Brake control module or internal driver fault (less common)
  • Water intrusion or corrosion in harness or connector

Symptoms

  • Brake pad wear warning light or BRAKE message on dash
  • Illumination of ABS or traction control warning lamps in some systems
  • One wheel brake pad not reporting wear (uneven wear may go unnoticed)
  • Stored DTC C1246 in chassis control/ABS module

What to check

  • Read and record freeze-frame and related ABS/chassis codes with a scan tool
  • Visually inspect all four pad wear sensors, connector plugs and harness routing at each wheel/caliper for damage, corrosion, or separation
  • Separate connector and inspect terminals for corrosion, bent pins, or water intrusion
  • Check for aftermarket pads or missing sensor clips on replaced pads
  • Perform a wiggle test on the harness while monitoring for change in status with a scan tool

Signal parameters

  • Intact pad-wear sensor: circuit shows continuity (low resistance). Exact resistance varies by design; consult service manual. Open circuit: infinite/OL resistance.
  • Some systems provide a switched voltage from module — expect ~0–12 V depending on design. With sensor connected and intact voltage may be pulled to ground or to reference; consult vehicle wiring diagram.
  • Compare readings to service manual values for the specific wheel/sensor.

Diagnostic algorithm

  1. Use a scan tool to confirm C1246 and check for any related codes (ABS, wheel speed, other C12xx codes). Record which wheel is indicated if available.
  2. Visually inspect the pad wear sensor and harness at the wheel specified. Look for chaffing where the lead passes through brackets or rubber boots.
  3. Disconnect the suspect sensor connector and measure resistance across the sensor. If resistance is infinite/OL, the sensor is open and should be replaced.
  4. If the sensor shows continuity, check continuity between the sensor connector pin and the ABS/control module connector pin. Repair any open circuit in the harness (splice, replace harness section, repair terminal).
  5. If wiring and sensor check good, inspect module connector for corrosion and check for proper reference voltage/ground at the module pin with a wiring diagram. Replace or repair terminals as needed.
  6. If wiring and sensor are good and module outputs are correct, suspect internal module fault and follow factory procedures to verify/replace the ABS/chassis control module.
  7. After repair or replacement, clear codes, perform relearn procedures if required, and test drive to confirm code does not return.

Likely causes

  • Broken/frayed sensor lead at caliper (most common)
  • Disconnected or corroded connector at wheel or module
  • Damaged pad wear sensor element

Fault status

⚠️ Status
Brake Lining Wear Circuit Open — the brake pad wear sensor circuit is reporting an open (no continuity). This will trigger a brake pad wear/maintenance warning and should be inspected and repaired.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1244 C1245 C1247 C1235 C0035
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.

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
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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.

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
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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.

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
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Code

C1246

MITSUBISHI C — Chassis

RR inlet valve

Brand: MITSUBISHI
Type: C — Chassis
Views: UK: 5 EN: 13 RU: 9
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or chafed sensor wire at the caliper or suspension movement point
  • Corroded, loose or disconnected connector at the wear sensor or control module
  • Failed or damaged pad wear sensor (broken element)
  • Aftermarket or replacement pads without a wear sensor installed
  • Faulty ABS/Brake control module or internal driver fault (less common)
  • Water intrusion or corrosion in harness or connector

Symptoms

  • Brake pad wear warning light or BRAKE message on dash
  • Illumination of ABS or traction control warning lamps in some systems
  • One wheel brake pad not reporting wear (uneven wear may go unnoticed)
  • Stored DTC C1246 in chassis control/ABS module

What to check

  • Read and record freeze-frame and related ABS/chassis codes with a scan tool
  • Visually inspect all four pad wear sensors, connector plugs and harness routing at each wheel/caliper for damage, corrosion, or separation
  • Separate connector and inspect terminals for corrosion, bent pins, or water intrusion
  • Check for aftermarket pads or missing sensor clips on replaced pads
  • Perform a wiggle test on the harness while monitoring for change in status with a scan tool

Signal parameters

  • Intact pad-wear sensor: circuit shows continuity (low resistance). Exact resistance varies by design; consult service manual. Open circuit: infinite/OL resistance.
  • Some systems provide a switched voltage from module — expect ~0–12 V depending on design. With sensor connected and intact voltage may be pulled to ground or to reference; consult vehicle wiring diagram.
  • Compare readings to service manual values for the specific wheel/sensor.

Diagnostic algorithm

  1. Use a scan tool to confirm C1246 and check for any related codes (ABS, wheel speed, other C12xx codes). Record which wheel is indicated if available.
  2. Visually inspect the pad wear sensor and harness at the wheel specified. Look for chaffing where the lead passes through brackets or rubber boots.
  3. Disconnect the suspect sensor connector and measure resistance across the sensor. If resistance is infinite/OL, the sensor is open and should be replaced.
  4. If the sensor shows continuity, check continuity between the sensor connector pin and the ABS/control module connector pin. Repair any open circuit in the harness (splice, replace harness section, repair terminal).
  5. If wiring and sensor check good, inspect module connector for corrosion and check for proper reference voltage/ground at the module pin with a wiring diagram. Replace or repair terminals as needed.
  6. If wiring and sensor are good and module outputs are correct, suspect internal module fault and follow factory procedures to verify/replace the ABS/chassis control module.
  7. After repair or replacement, clear codes, perform relearn procedures if required, and test drive to confirm code does not return.

Likely causes

  • Broken/frayed sensor lead at caliper (most common)
  • Disconnected or corroded connector at wheel or module
  • Damaged pad wear sensor element

Fault status

⚠️ Status
Brake Lining Wear Circuit Open — the brake pad wear sensor circuit is reporting an open (no continuity). This will trigger a brake pad wear/maintenance warning and should be inspected and repaired.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1244 C1245 C1247 C1235 C0035
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

C1246

Other C — Chassis

ABS Outlet Valve Coil RR Circuit Failure

Brand: Other
Type: C — Chassis
Views: UK: 20 EN: 32 RU: 26
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or chafed sensor wire at the caliper or suspension movement point
  • Corroded, loose or disconnected connector at the wear sensor or control module
  • Failed or damaged pad wear sensor (broken element)
  • Aftermarket or replacement pads without a wear sensor installed
  • Faulty ABS/Brake control module or internal driver fault (less common)
  • Water intrusion or corrosion in harness or connector

Symptoms

  • Brake pad wear warning light or BRAKE message on dash
  • Illumination of ABS or traction control warning lamps in some systems
  • One wheel brake pad not reporting wear (uneven wear may go unnoticed)
  • Stored DTC C1246 in chassis control/ABS module

What to check

  • Read and record freeze-frame and related ABS/chassis codes with a scan tool
  • Visually inspect all four pad wear sensors, connector plugs and harness routing at each wheel/caliper for damage, corrosion, or separation
  • Separate connector and inspect terminals for corrosion, bent pins, or water intrusion
  • Check for aftermarket pads or missing sensor clips on replaced pads
  • Perform a wiggle test on the harness while monitoring for change in status with a scan tool

Signal parameters

  • Intact pad-wear sensor: circuit shows continuity (low resistance). Exact resistance varies by design; consult service manual. Open circuit: infinite/OL resistance.
  • Some systems provide a switched voltage from module — expect ~0–12 V depending on design. With sensor connected and intact voltage may be pulled to ground or to reference; consult vehicle wiring diagram.
  • Compare readings to service manual values for the specific wheel/sensor.

Diagnostic algorithm

  1. Use a scan tool to confirm C1246 and check for any related codes (ABS, wheel speed, other C12xx codes). Record which wheel is indicated if available.
  2. Visually inspect the pad wear sensor and harness at the wheel specified. Look for chaffing where the lead passes through brackets or rubber boots.
  3. Disconnect the suspect sensor connector and measure resistance across the sensor. If resistance is infinite/OL, the sensor is open and should be replaced.
  4. If the sensor shows continuity, check continuity between the sensor connector pin and the ABS/control module connector pin. Repair any open circuit in the harness (splice, replace harness section, repair terminal).
  5. If wiring and sensor check good, inspect module connector for corrosion and check for proper reference voltage/ground at the module pin with a wiring diagram. Replace or repair terminals as needed.
  6. If wiring and sensor are good and module outputs are correct, suspect internal module fault and follow factory procedures to verify/replace the ABS/chassis control module.
  7. After repair or replacement, clear codes, perform relearn procedures if required, and test drive to confirm code does not return.

Likely causes

  • Broken/frayed sensor lead at caliper (most common)
  • Disconnected or corroded connector at wheel or module
  • Damaged pad wear sensor element

Fault status

⚠️ Status
Brake Lining Wear Circuit Open — the brake pad wear sensor circuit is reporting an open (no continuity). This will trigger a brake pad wear/maintenance warning and should be inspected and repaired.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1244 C1245 C1247 C1235 C0035
Workshop Manuals

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2
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Contents
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Contents
Key sections:
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Contents
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Years: 2001–2003 Manual in English Pages: 307 7.3 MB
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  • - 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)
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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.

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
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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.

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
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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.

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
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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.

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
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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.

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
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