Code
P0193
FORD
P — Powertrain
Fuel Rail Pressure Sensor 'A' Circuit High
Views:
UK: 89
EN: 81
RU: 52
AI status
Completed
Completed
100%
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
- Verify the code and record freeze frame/live data. Check for multiple related DTCs.
- Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
- 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.
- 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.
- If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
- If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
- 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.
- 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
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P0193
Generic
P — Powertrain
Fuel Rail Pressure Sensor Circuit High Bank 1
Views:
UK: 226
EN: 477
RU: 398
AI status
Completed
Completed
100%
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
- Verify the code and record freeze frame/live data. Check for multiple related DTCs.
- Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
- 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.
- 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.
- If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
- If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
- 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.
- 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
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P0193
GWM
P — Powertrain
- High fuel temperature sensor
Views:
UK: 108
EN: 123
RU: 128
AI status
Completed
Completed
100%
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
- Verify the code and record freeze frame/live data. Check for multiple related DTCs.
- Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
- 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.
- 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.
- If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
- If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
- 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.
- 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
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P0193
HUMMER
P — Powertrain
Fuel Rail Pressure Sensor Circuit High Voltage
Views:
UK: 189
EN: 350
RU: 327
AI status
Completed
Completed
100%
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
- Verify the code and record freeze frame/live data. Check for multiple related DTCs.
- Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
- 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.
- 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.
- If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
- If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
- 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.
- 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
HTML Workshop Manuals AI manual library for HUMMER Click to show available manuals 77
HUMMER 2010 H3 Alpha
HTML ManualHUMMER 2010 H3 Base, Standard
HTML ManualHUMMER 2010 H3 Base, Automatic
HTML ManualHUMMER 2010 H3T Alpha
HTML ManualHUMMER 2010 H3T Base, Standard
HTML ManualHUMMER 2010 H3T Base, Automatic
HTML ManualHUMMER 2009 H2 4D Utility Wagon
HTML ManualHUMMER 2009 H2 4D Utility Pickup
HTML ManualYour experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P0193
ISUZU
P — Powertrain
Fuel Rail Pressure Sensor Circuit High
Views:
UK: 234
EN: 534
RU: 383
AI status
Completed
Completed
100%
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
- Verify the code and record freeze frame/live data. Check for multiple related DTCs.
- Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
- 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.
- 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.
- If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
- If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
- 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.
- 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
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P0193
LAND ROVER
P — Powertrain
Fuel rail pressure sensor circuit input high
Views:
UK: 159
EN: 284
RU: 298
AI status
Completed
Completed
100%
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
- Verify the code and record freeze frame/live data. Check for multiple related DTCs.
- Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
- 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.
- 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.
- If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
- If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
- 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.
- 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
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P0193
MITSUBISHI
P — Powertrain
Fuel pressure sensor high input
Views:
UK: 186
EN: 360
RU: 330
AI status
Completed
Completed
100%
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
- Verify the code and record freeze frame/live data. Check for multiple related DTCs.
- Perform a visual inspection of the FRP sensor, connector, and wiring for damage, heat, or contamination.
- 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.
- 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.
- If reference or ground is missing or low quality, trace and repair wiring/grounds. Repair corroded connectors or broken pins.
- If wiring and connectors are good, substitute a known-good FRP sensor or bench-test the sensor to confirm failure.
- 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.
- 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
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email