2006 Cadillac DTS 4.6L MIL Lamp on
Car came in with code P0420. Converter tested marginal so I replaced cat with a Walker Ultra and updated the computer with the latest software for false code P0420 setting. Ran bay test to run monitor and passed. Road tested vehicle while watching oxygen senso...
FIX posted 1/28/2015
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Message Closed w/FIX
Vehicle Data2006 Cadillac DTS
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2006 Cadillac DTS
VIN | 1G6KD57Y76 |
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 |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |