Cause
Failed fuel metering control solenoid
The valve controlling how much fuel the high-pressure pump draws in, and therefore rail pressure. It is a serviceable part on the pump rather than the pump itself, and it fails far more often — so a rail pressure fault is not automatically a pump replacement.
Typically specialist work. Needs equipment or training most home workshops do not have.
Some of these codes mean you should stop driving
9 of the 9 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 (9)
Codes where this is a likely explanation first, rather than merely a possible one.
- P0251 Injection Pump Fuel Metering Control A — Cam/Rotor/Injector Likely for this code Stop driving High
- P0253 Injection Pump Fuel Metering Control A Low (Cam/Rotor/Injector) Likely for this code Stop driving High
- P0254 Injection Pump Fuel Metering Control A High (Cam/Rotor/Injector) Likely for this code Stop driving High
- P0255 Injection Pump Fuel Metering Control A Intermittent (Cam/Rotor/Injector) Likely for this code Stop driving High
- P0256 Injection Pump Fuel Metering Control B (Cam/Rotor/Injector) Likely for this code Stop driving High
- P0258 Injection Pump Fuel Metering Control B Low (Cam/Rotor/Injector) Likely for this code Stop driving High
- P0259 Injection Pump Fuel Metering Control B High (Cam/Rotor/Injector) Likely for this code Stop driving High
- P0260 Injection Pump Fuel Metering Control B Intermittent (Cam/Rotor/Injector) Likely for this code Stop driving High
- P0252 Injection Pump Fuel Metering Control A Range/Performance (Cam/Rotor/Injector) Stop driving 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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