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2005 Chevrolet Uplander LS 3.5L MIL Lamp on
After a few weeks of driving the SES will set 420 as a Catalyst System Low Efficiency. I have checked back preshure (ok) and inspected with frontside of converter with bore scope (no problem). While watching the upstream and downstream O2s together the upstrea...
Summary posted 3/5/2012
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Related Documents & Media | VIN | 1GNDX33165 |
| Engine | 3.5 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
| Misc. | Awd |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/Summary
Vehicle Data
2005 Chevrolet Uplander LS
| VIN | 1GNDX33165 |
| Engine | 3.5 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
| Misc. | Awd |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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