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2002 Chevrolet Impala LS 3.8L MIL Lamp on
Posted to GM Driveability on 3/10/2009 25 Replies

this code keeps coming back before we warranty the converter has any one else been having this problem when the cat wasn't the fix? should we try another update?

25 Replies Received (View Replies)

  Related Documents & Media  2002 Chevrolet Impala LS

 
Message Closed w/FIX

car Vehicle Data

2002 Chevrolet Impala LS

VIN 2G1WH55K22
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / MULTI PORT
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAt Least a Couple of Days

Trouble Codes

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

car Vehicle Data

2002 Chevrolet Impala LS

VIN 2G1WH55K22
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / MULTI PORT
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAt Least a Couple of Days

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)