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2001 Chevrolet Impala LS 3.8L MIL Lamp on
Vehicle owner complains that the SES light comes on after
being reset by a local dealer. (One of those nightmare
dealerships) The code in question is P0420. (Catalytic
Converter Efficiency Low).
FIX posted 9/22/2003
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Message Closed w/FIX
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Related Documents & Media | VIN | 2G1WH55K11 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
| Misc. | 4 Door |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
2001 Chevrolet Impala LS
| VIN | 2G1WH55K11 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
| Misc. | 4 Door |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Video