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1997 Pontiac Firebird 3.8L MIL Lamp on
Posted to GM Driveability on 7/20/2004 25 Replies

customer brought car to us with check engine light on and found dtc po420 catalyst efficiency low bank 1 looked at all parameters and look good cleared the code and let customer drive the car a few weeks later the car came back with light on again same dtc so ...

25 Replies Received (View Replies)

  Related Documents & Media  1997 Pontiac Firebird

 
Message Closed w/FIX

car Vehicle Data

1997 Pontiac Firebird

VIN 2G2FS22K2V
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

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

car Vehicle Data

1997 Pontiac Firebird

VIN 2G2FS22K2V
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)