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1995 Pontiac Bonneville SSE 3.8L MIL Lamp on
Posted to GM Driveability on 9/25/2006 3 Replies

I'll preface this by saying my good driveability tech has retired and driveability is not my new tech's strong point.

This car came in /w intermittent MIL on. Sometimes comes on immediately, sometimes comes on after 15-20 minutes of driving. Has code p1640 st...

3 Replies Received (View Replies)

  Related Documents & Media  1995 Pontiac Bonneville SSE

 
Message Closed w/Summary

car Vehicle Data

1995 Pontiac Bonneville SSE

VIN 1G2HZ5215S
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

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

car Vehicle Data

1995 Pontiac Bonneville SSE

VIN 1G2HZ5215S
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P1640Output Driver Module 'A' Circuit Malfunction