P0627

Fuel Pump A Control Circuit/Open

Fuel pump control Generic OBD-II High

What it means

P0627 means the ECM has detected an open (broken) circuit in the control side of fuel pump A — the wiring, relay, or pump driver it uses to switch the pump on. If the pump can't be commanded properly, fuel delivery suffers, which can cause hard starting, stalling, or a no-start. The fault is usually in the control wiring or relay rather than the pump itself.

High

Can I keep driving? Don't rely on the vehicle — an open fuel-pump control circuit can cut fuel delivery and cause stalling or a no-start at any moment.

Real-world scan data

Seen in

671

scans in the past year

Found in

0.1%

of scans

0.2%

of scans that found faults

Appears alongside · share of P0627 scans

P0645in 14.3% of scans

P0504in 13.4% of scans

P0087in 11.0% 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, stalling, or a no-start
Engine sputters or cuts out under load
Reduced power and hesitation

Common causes

Most likely first

Open or damaged wiring/connector in the fuel-pump control circuitLikely
Failed fuel-pump relay or driverCommon
Failed fuel-pump control module (FPCM) where fittedCommon
Failed fuel pumpLess often
Poor power or ground connectionLess often

How to diagnose & fix

Work through it in order

Read freeze-frame data and inspect the fuel-pump relay, connectors, and control wiring for an open or corrosion.
Check that the ECM commands the pump on and that power and ground reach the pump.
Test the fuel-pump relay/driver and the pump control module if fitted.
Replace the fuel pump only after confirming the circuit is intact. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0627?+

No, not reliably. This circuit controls the fuel pump, so the engine can stall or fail to start without warning. Have it repaired promptly.

Can I just clear P0627?+

It returns as soon as the open circuit is detected again. The wiring, relay, or pump control fault has to be fixed first.

Read & clear P0627 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