P1404 OBD Trouble Code

1 result found

P1404 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled

EGR Valve Closed Position Performance Conditions


No CKP, ECT, IAT, Idle Speed, Injector, MAF, MAP, TP or VSS codes set, system voltage from 10-16v, EGR enabled (after an initial test failure a 60 percent valve opening must be achieved and maintained for at least 5 seconds), then the PCM detected a 25% difference between the Actual EGR position and the Learned EGR closed valve position, error detected on 4 consecutive tests

Try also: https://www.obd-codes.com/p1404