P0232

Fuel Pump Secondary Circuit High

Q: 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.

Q: 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.

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.

Real-world scan data

Seen in

148

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Appears alongside · share of P0232 scans

U0001in 46.0% of scans

P0335in 43.9% of scans

P0500in 41.2% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

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.

Read & clear P0232 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX