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2003 Buick Century Custom 3.1L MIL Lamp on
Posted to GM Driveability on 11/20/2007 7 Replies

Came in for inspection, light on. Cleared code, retested and failed. EGR valve operates when power applied, reads position sensor when energized manually. Will not open when commanded by MODIS, I get power but no ground to operate valve. Also MODIS shows no EG...

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  Related Documents & Media  2003 Buick Century Custom

 
Message Closed w/FIX

car Vehicle Data

2003 Buick Century Custom

VIN 2G4WS52J43
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0403EGR Control Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

2003 Buick Century Custom

VIN 2G4WS52J43
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0403EGR Control Circuit Malfunction