P0253: Injection Pump Fuel Metering Control A Low (Cam/Rotor/Injector)
Do not keep driving
Expect poor running or a no-start. Have the electrical side eliminated before any pump work is authorised.
What this code means
The primary metering control circuit is reading low — a short to ground, or a failed solenoid winding inside the pump. Measure the solenoid's resistance at the pump connector before disturbing anything internal; an electrical fault in an otherwise sound pump is a far smaller job than a rebuild.
Likely causes
Start here
- Wiring shorted to ground · moderate
- Failed fuel metering control solenoid · specialist
- Corroded or loose connector · easy
Less common
- Chafed harness against engine or bracket · moderate
Rare
- Control module driver failure · specialist
Symptoms
Components involved
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.
Community experience
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