Possible causes – Faulty Air fuel ratio (A/F) sensor 1 Bank 1 – Faulty Air fuel ratio (A/F) sensor 1 heater Bank 1 – Fuel pressure– Faulty Fuel injector – Faulty Air Flow Meter Tech notes If one or more
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 Bank 1 – Faulty Air fuel ratio (A/F) sensor 1 heater Bank 1 – Fuel pressure– Faulty Fuel injector – Faulty Air Flow Meter Tech notes If one or more
Possible causes Air fuel ratio (A/F) sensor 1 Air fuel ratio (A/F) sensor 1 heater Fuel pressure Fuel injector Intake air leaks When is the code detected? The output voltage computed by ECM from the A/F sensor 1 (Bank 2)
P1284 DODGE – Engine is Cold Too Long
P1284 FORD – Aborted KOER – ICP Failure