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2001 Buick Century Custom 3.1L MIL Lamp on
Posted to GM Driveability on 2/15/2007 29 Replies

This vehicle about a year and half ago came in with bad miss fire, replace plugs and wires, unknown how long condition had been happening, approx six months ago came in with lack of power, diagnosed plugged convertor, replaced convertor with economy aftermarke...

29 Replies Received (View Replies)

  Related Documents & Media  2001 Buick Century Custom

 
Message Closed w/Summary

car Vehicle Data

2001 Buick Century Custom

VIN 2G4WS52J01
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/Summary

car Vehicle Data

2001 Buick Century Custom

VIN 2G4WS52J01
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)