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2002 Buick Century Custom 3.1L Excessive Emissions, MIL Lamp on
Posted to GM Driveability on 9/4/2007 7 Replies

I have this 2002 buick century that is running rich long term trim is -25% The O2 sensor and injectors have been replaced The other sensors such as TPS MAP and MAF seem to be operating within normal parameters anyone have any suggestions Help would be greatly ...

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  Related Documents & Media  2002 Buick Century Custom

 
Message Closed w/FIX

car Vehicle Data

2002 Buick Century Custom

VIN 2G4WS52J52
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursAlways, on Decel

Trouble Codes

P0172Fuel System Too Rich (Bank 1)
Message Closed w/FIX

car Vehicle Data

2002 Buick Century Custom

VIN 2G4WS52J52
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursAlways, on Decel

Trouble Codes

P0172Fuel System Too Rich (Bank 1)