P0404 OBD Trouble Code
1 result found
| Type | Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled |
|---|---|
| Description | EGR Position Sensor Rationality Failure Conditions |
| Cause | Cold engine startup completed, then the test started and the PCM detected that the EGR flow (through the valve movement) was not what it expected during the test period. |
Try also: https://www.obd-codes.com/p0404
