
2000 Cadillac DeVille DTS 4.6L MIL Lamp on
This car had come in from dealership and customer was told converter needed replaced. Scanned checked codes had cat ineffiacncey code . Cleared code went on test drive came back. Replaced converter with aftermarket. Installed new rear O2 sensor. Test drove...
FIX posted 4/24/2018
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Message Closed
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VIN | [No VIN Available] |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Intermittently |
Misc. | Code P0420 |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed
Vehicle Data
2000 Cadillac DeVille DTS
VIN | [No VIN Available] |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Intermittently |
Misc. | Code P0420 |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |