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2002 Buick Regal LS 3.8L MIL Lamp on, PO420
This vehicle came to me with a hole burned through the intake phlenum and antifreeze in the cylinders. I replaced the Phlenum and cleaned up the cylinders. upon starting the vehicle discovered the starter was also bad. Replaced starter. After test drivining th...
FIX posted 5/18/2006
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Message Closed w/FIX
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26 Replies Received
26 Replies Received
Related Documents & Media | VIN | 2G4WB55KX2 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, Po420 |
| Occurs | Intermittently |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
2002 Buick Regal LS
| VIN | 2G4WB55KX2 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, Po420 |
| Occurs | Intermittently |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Video