Possible Causes
NOTE:
If P144C-00, P2178-00, P2187-00 or P2274-00 is also set, perform the corrective actions for P0191-85 first and retest.
- Electrical Cause
- Yes
- Mechanical Cause
- Yes
- Control Module Cavity
- Circuit reference - O_V_5VRAILPS -
- Circuit reference - I_A_RAILPS -
- Circuit reference - G_R_RAILPS -
- Circuit reference - I_A_RAILFTS -
- Prioritized List of Possible Causes
- Powertrain control module software is not correct
- Fuel rail pressure sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Fuel rail pressure sensor failure