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1995 Buick Riviera 3.8L MIL Lamp on
Posted to GM Driveability on 5/5/2009 11 Replies

Hello all. Hopefully some one can point me in the right direction. The two codes that keep returning seem to be at the same time. Performed flow chart testing for both codes but only the EGR test was definitive in failing the part but the EGR has been replaced...

11 Replies Received (View Replies)

  Related Documents & Media  1995 Buick Riviera

 
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car Vehicle Data

1995 Buick Riviera

VIN 1G4GD2211S
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursNot Applicable

Trouble Codes

P1406EGR Valve Pintle Position Circuit Malfunction
P1640Output Driver Module 'A' Circuit Malfunction
Message Closed

car Vehicle Data

1995 Buick Riviera

VIN 1G4GD2211S
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursNot Applicable

Trouble Codes

P1406EGR Valve Pintle Position Circuit Malfunction
P1640Output Driver Module 'A' Circuit Malfunction