DTC Advanced Diagnostics: P0192, P0193
DTC P0192:Fuel Rail Pressure Sensor Circuit Low Voltage
DTC P0193:Fuel Rail Pressure Sensor Circuit High Voltage

General Description

The powertrain control module (PCM) monitors the sensor signal of the fuel rail pressure sensor. Failures in function caused by an open or short circuits in the electrical circuit can be detected with a pull-up resistor. If the fuel rail pressure sensor output voltage is a specified voltage for a set time, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Continuous
Sequence
None
Duration
0.5 second 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] is less than 0.24 V for at least 0.5 second.

DTC: P0193

The fuel rail pressure sensor output voltage [Fuel Pressure Converted From PF Sensor] is greater than 4.83 V for at least 0.5 second.

[ ]: HDS Parameter

Possible Cause
NOTE: 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 PF line short to power
Fuel rail pressure sensor VCC line open

DTC: P0193
Fuel rail pressure sensor PF line short to power
Fuel rail pressure sensor PF line open
Fuel rail pressure sensor SG 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, and the freeze data 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, and the freeze data can be cleared with the scan tool Clear command.