DTC Advanced Diagnostics: P0192, P0193 (1.5L Engine)
DTC P0192: Fuel Rail Pressure Sensor Circuit Low Voltage DTC P0193: Fuel Rail Pressure Sensor Circuit High Voltage
General Description
The fuel rail pressure sensor senses fuel pressure and converts it into electrical signals. The powertrain control module (PCM) adjusts to a specified fuel pressure by controlling the high pressure fuel pump solenoid based on the fuel rail pressure sensor output signal. The fuel rail pressure sensor outputs low signal voltage at low fuel pressure and high signal voltage at high fuel pressure. If the fuel rail pressure sensor output voltage is out of a specified range for predetermined time, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 1.5 seconds or more |
| DTC Type | One drive cycle, MIL on |
Enable Conditions
| Condition | |
|---|---|
| Vehicle | ON mode |
Malfunction Threshold
DTC: P0192
The fuel rail pressure sensor output voltage [Fuel Pressure Converted From PF Sensor Voltage] is 0.31 V or less for at least 1.5 seconds.
DTC: P0193
The fuel rail pressure sensor output voltage [Fuel Pressure Converted From PF Sensor Voltage] is 4.89 V or more for at least 1.5 seconds.
[ ]: HDS Parameter
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
DTC: P0192
- Fuel rail pressure sensor VCC1 line open
- Fuel rail pressure sensor PF line short to ground
DTC: P0193
- Fuel rail pressure sensor SG1 line open
- Fuel rail pressure sensor PF line open
Common
- Fuel rail pressure sensor failure
- PCM internal circuit failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, the freeze data, and the on-board snapshot are stored in the PCM memory.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.