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Fault codes › P02xx — Injector circuit › P0257

P0257

SEVERE

Injection Pump Fuel Metering Control B Range/Performance (Cam/Rotor/Injector)

What this code means

Injection Pump Fuel Metering Control B Range/Performance (Cam/Rotor/Injector). These codes point directly at the injectors and their electrical control. An injector that no longer sprays properly unbalances combustion in its cylinder, and usually brings misfire codes with it.

How to read this code

  • PPowertrain
  • 0standardised code
  • 2Injector circuit
  • 57P0257

The letter P names the system: Powertrain. The digit 0 that follows marks a standardised code, shared by all manufacturers code. The next digit, 2, locates the fault: injector circuit.

What to do

Have it checked promptly. A misfire sends unburnt fuel into the exhaust and destroys the catalytic converter within a few dozen kilometres. If the light is flashing, stop driving.

Clearing a code switches the light off but repairs nothing: if the fault remains, the code comes back.

Nearby codes

P0257

System
Powertrain
Fault family
Injector circuit
Severity
SEVERE
Origin
Standardised generic code
Read this code on your own car

Klaro shows this code and the others in plain words, alongside live engine data. An OBD2 adapter is required, sold separately.

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