P0253 OBD II Trouble Code Injection Pump Fuel Metering Control A Low (Cam/Rotor/Injector)
How to easily diagnose, repair, and what causes a P0253 code which indicates a low voltage condition in the A injection pump fuel metering control.
Symptoms of P0253 OBD II Trouble Code
- Malfunction Indicator Lamp (MIL) illumination
- Decrease in fuel economy
Common Causes of P0253 OBD II Trouble Code
- Short to ground in the signal circuit to the FRP sensor - possible
- Short to ground or open in the power circuit at FRP sensor - possible
- Failed PCM - unlikely
Severity of P0253 OBD II Trouble Code
Severity in this case will be not severe. Since it is electrical failure, the PCM can compensate adequately for it.