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1994 Buick Century Special 3.1L MIL Lamp on
Posted to GM Driveability on 3/15/2008 13 Replies

The car had no code when it came in for a leaking head gasket. Changed the head gasket, started the car and the code came on I have no idea what caused it to come on. The car runs good, has no driveability problem but the light comes on and then it goes off an...

13 Replies Received (View Replies)

  Related Documents & Media  1994 Buick Century Special

 
Message Closed w/FIX

car Vehicle Data

1994 Buick Century Special

VIN 1G4AG55M5R
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsMIL Lamp On
OccursIdle, Intermittently

Trouble Codes

P1640Output Driver Module 'A' Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

1994 Buick Century Special

VIN 1G4AG55M5R
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsMIL Lamp On
OccursIdle, Intermittently

Trouble Codes

P1640Output Driver Module 'A' Circuit Malfunction