Ford P0257 OBD-II Trouble Code Definition:
P0257 Injection Pump Fuel Metering Control B Range / Performance (Camshaft / Rotor / Injector)
P0257 Ford OBD-II Trouble CodeDescription:
OBD Trouble Code P0257
Injection Pump Fuel Metering Control “B” Range/Performance (Cam/Rotor/Injector)
What does the code mean? OBD-ii Code P0257 definition:
The ECM detects a discrepancy between the Pulse-Width Modulation (PWM) supplied to the Electronic Fuel Control Actuator (FCA) and the PWM returned from the Electronic Fuel Control Actuator (FCA).
The ECM detects a discrepancy between the Pulse-Width Modulation (PWM) supplied to the Electronic Fuel Control Actuator (FCA) and the PWM returned from the Electronic Fuel Control Actuator (FCA).
Symptoms Sumptoms of OBD code P0257
– Engine Light ON (or Service Engine Soon Warning Light)
– Engine Light ON (or Service Engine Soon Warning Light)
Causes Causes of the OBD-II code P0257
– Fuel Pump – FCA Driver Open – Return Circuit Open from FCA to ECM – FCA Driver Circuit Shorted to External Voltage – FCA Return Circuit Shorted to External V
– Fuel Pump – FCA Driver Open – Return Circuit Open from FCA to ECM – FCA Driver Circuit Shorted to External Voltage – FCA Return Circuit Shorted to External V
Solutions