DTC P0192 (6-Speed A/T, 16-18 9-Speed A/T)
DTC P0192 : Fuel Rail Pressure Sensor Circuit Low Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems .
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P0192 Fuel Rail Pressure Sensor Circuit Low Voltage |
DTC (PGM-FI)
- Problem verification
- 1. Turn the vehicle to the ON mode and wait 2 seconds.
- 2. Check the parameter(s) below with the HDS.
Signal Threshold Current conditions Values Unit Values Unit INPUT VOLTAGE FROM PF SENSOR Less than 0.31 V Do the current condition(s) match the threshold?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the fuel rail pressure sensor and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot - Refer to: How to Troubleshoot the Fuel and Emissions Systems .
- Determine possible failure area (PF line, others)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Fuel rail pressure sensor 3P connector - 3. Turn the vehicle to the ON mode.
- 4. Check the parameter(s) below with the HDS.
Signal Threshold Current conditions Values Unit Values Unit INPUT VOLTAGE FROM PF SENSOR Less than 0.31 V Do the current condition(s) match the threshold?
YES
Go to step 3.
NO
Go to step 4.
- Shorted wire check (PF line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Jump the SCS line with the HDS, and wait more than 1 minute.
- 3. Disconnect the following connector.
PCM connector B (51P) - 4. Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode Fuel rail pressure sensor 3P connector: disconnected PCM connector B (51P): disconnected Test point 1 Fuel rail pressure sensor 3P connector No. 1 Test point 2 Body ground Is there continuity?
YES
Repair a short in the PF wire between the PCM (B35) and the fuel rail pressure sensor.
NO
The PF wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good PCM - Refer to: PCM Removal and Installation (6-Speed A/T), ('16-'18 9-Speed A/T) .
- Determine possible failure area (fuel rail pressure sensor, others)
- 1. Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode Fuel rail pressure sensor 3P connector: disconnected Test point 1 Fuel rail pressure sensor 3P connector No. 2 Test point 2 Fuel rail pressure sensor 3P connector No. 3 Is there about 5.0 V?
YES
Replace the fuel rail (fuel rail pressure sensor) - Refer to: Injector Removal and Installation (6-Speed A/T, '16-'18 9-Speed A/T) .
NO
Go to step 5.
- Open wire check (VCC1 line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Jump the SCS line with the HDS, and wait more than 1 minute.
- 3. Disconnect the following connector.
PCM connector C (51P) - 4. Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode Fuel rail pressure sensor 3P connector: disconnected PCM connector C (51P): disconnected Test point 1 Fuel rail pressure sensor 3P connector No. 3 Test point 2 PCM connector C (51P) No. 32 - Refer to:
PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or
PCM Connector for Inputs and Outputs (6-Speed A/T) (2016 2017 2018 2019 2020)Is there continuity?
YES
The VCC1 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good PCM - Refer to: PCM Removal and Installation (6-Speed A/T), ('16-'18 9-Speed A/T) .
NO
Repair an open in the VCC1 wire between the PCM (C32) and the fuel rail pressure sensor.