P0232
Fuel Pump Secondary Circuit High
Fuel delivery
Generic OBD-II
High
What it means
P0232 sets when the control module detects an abnormally high voltage on the fuel-pump secondary (control) circuit — usually a short to voltage, a stuck relay, or a driver-module fault. Since this circuit switches the fuel pump on, the fault can leave the engine hard to start or prone to stalling, so it should be treated as a potential no-start.
High
Can I keep driving? Because it involves the fuel-pump control circuit, the engine may be hard to start or stall — treat it as a potential no-start and fix it before depending on the car.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting or a no-start condition
- Engine stalling or cutting out
- Reduced power or hesitation under load
Common causes
Most likely first
- Short to voltage in the fuel-pump control (secondary) wiringLikely
- Faulty fuel-pump relayCommon
- Failed fuel-pump driver module (FPDM)Common
- Corroded connectors or poor grounds in the pump circuitLess often
- Failed fuel pump or its control driver in the PCMLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data, then inspect the fuel-pump control wiring and connectors for a short to voltage or corrosion.
- Test the fuel-pump relay and its control/feed circuits.
- Check the fuel-pump driver module (FPDM) supply, ground, and control signal where fitted.
- Verify fuel-pump operation and pressure before condemning the pump.
- Replace the failed component identified, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0232?+
Not reliably — a fuel-pump circuit fault can leave you stranded with a no-start or a sudden stall. Address it before longer trips.
Can I just clear P0232?+
You can, but it returns as soon as the module sees the high circuit again. The wiring or relay fault must be repaired.
Related codes
Often seen with P0232
Read & clear P0232 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX