
2003 Chevrolet Malibu 3.1L Excessive Emissions, MIL Lamp on
reoccuring 420 does any one else see this problem on gm mainly on 3.1 and 3.4 several cats have been installed even heavy metal cats always fails 420 no reflahs found for this car what is the fix?
FIX posted 7/15/2009
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Message Closed
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VIN | 1G1ND52J83 |
Engine | 3.1 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Excessive Emissions, MIL Lamp On |
Occurs | Always |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed
Vehicle Data
2003 Chevrolet Malibu
VIN | 1G1ND52J83 |
Engine | 3.1 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Excessive Emissions, MIL Lamp On |
Occurs | Always |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |