Cause
Faulty fuel pump control module
The module varying fuel pump speed rather than running it flat out. Its own supply and earth come first, as with any module — and because it sits between the engine module and the pump, a fault here reads exactly like a failed pump from the front of the car.
Typically specialist work. Needs equipment or training most home workshops do not have.
Some of these codes mean you should stop driving
5 of the 11 codes this can cause indicate a fault where continuing to drive risks damage or is unsafe. Which one you have matters more than the cause does — read the code's own page before deciding.
Codes this can cause (11)
Codes where this is a likely explanation first, rather than merely a possible one.
- P025A Fuel Pump Module A Control Circuit/Open Likely for this code Stop driving High
- P025C Fuel Pump Module A Control Circuit Low Stop driving High
- P0627 Fuel Pump A Control Circuit Open High
- P0628 Fuel Pump A Control Circuit Low High
- P062A Fuel Pump A Control Circuit Range/Performance High
- P2540 Low Pressure Fuel System Sensor Circuit Range/Performance Stop driving High
- P2542 Low Pressure Fuel System Sensor Circuit High High
- P2632 Fuel Pump B Control Circuit Open High
- P2635 Fuel Pump A Low Flow or Performance Stop driving High
- U0109 Lost Communication With Fuel Pump Control Module A Stop driving High
- U0410 Invalid Data Received From Fuel Pump Control Module A High
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
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