P1235 Possible Causes
- Faulty Fuel Pump Driver Module (FPDM)
- FPDM harness is open or shorted
- Poor electrical connection in FPDM circuit
- Faulty Powertrain Control Module (PCM)
How to Fix Code P1235?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check Engine Light on (or Service Engine Soon warning light)
P1235 Meaning
The P1235 code indicates that the Fuel Pump Driver Module (FPDM) has detected an invalid or missing fuel pump (FP) circuit signal from the Powertrain Control Module (PCM). The FPDM sends a message to the PCM via the FPM circuit, indicating that this fault has been detected. The PCM sets the DTC when the message is received.