What does code P0257 mean?
Fuel metering control circuit B is operating outside expected range
OBD-II Code
P0257 — Injection Pump Fuel Metering Control B Range or Performance Cam Rotor Injector
Fuel metering control circuit B is operating outside expected range
Common symptoms
- Incorrect mixture
- engine vibration
Possible causes
- Internal pump wear
- contaminated sensor
Initial recommendation
Inspect injection pump, pressure and fuel quality.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0257 with your vehicle's actual symptoms for more complete diagnostic guidance.
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