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2001 Pontiac Grand Prix SE 3.1L MIL Lamp on
Posted to GM Driveability on 5/3/2005 13 Replies

This car orgininally started out with a lost of power in January. Had code PO300. #2 misfire. Cleared codes and test drove o.k. Came back in 2 weeks later, wouldn't go over 25mph. Plugged up cat. Replaced cat. Test drove fine. 2 weeks later came back with chec...

13 Replies Received (View Replies)

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car Vehicle Data

2001 Pontiac Grand Prix SE

VIN 1G2WK52J91
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / EFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
P1811Maximum Adaptive & Long Term Shift
Message Closed

car Vehicle Data

2001 Pontiac Grand Prix SE

VIN 1G2WK52J91
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / EFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
P1811Maximum Adaptive & Long Term Shift