P0404 Diagnostic Trouble Code Discussion for March 2016
EGR Position Sensor Performance
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| Help Request | Posted | |
| 2002 Pontiac Grand Prix SE 3.1L Hesitation, MIL Lamp on VIN: 1G2WK52J42 P0404: EGR Open Position Performance. Car starts right up, idles fine. However when driven stumbles / hesitates / lack of power under load. Plugs and wires were original. Plugs in bad shape. Replaced spark plugs and wires. Symptoms seemed to improve slightly. Fuel pressure was good and increased a... |
March 23, 2016 |
