P0405 Diagnostic Trouble Code Discussion for September 2008
EGR Position Sensor Circuit Low Voltage
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| Help Request | Posted | |
| 2001 Cadillac Seville SLS 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KS54Y71 P0405: EGR Position Sensor Circuit Low Voltage. after start up the egr valve opens for about 10 seconds causing the car to run rough you can watch it open on the scan tool the valve isnt the problem i tried another thinking maybe it was weak it does not have excessive back pressure either |
September 18, 2008 | |
| 2001 Cadillac Seville SLS 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KS54Y71 P0405: EGR Position Sensor Circuit Low Voltage. after start up the egr valve opens for about 10 seconds causing the car to run rough you can watch it open on the scan tool the valve isnt the problem i tried another thinking maybe it was weak it does not have excessive back pressure either |
September 19, 2008 |
