P0420 Diagnostic Trouble Code Discussion for October 2020
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2012 Jeep Compass Sport 2.4L Hesitation, Surge, MIL Lamp on VIN: 1C4NJDBB6C P0420: catalyst efficiency below threshold. there is a light surge and hesitation when driving between 20 to 40 miles per hour , and can barley be felt only to a trained professionals. the engine does not misfire at idle or when accelerating to cruising speeds. the operator only drives 4 miles to wo... |
October 02, 2020 | |
| 2012 Jeep Compass Sport 2.4L Hesitation, Surge, MIL Lamp on VIN: 1C4NJDBB6C P0420: catalyst efficiency below threshold. there is a light surge and hesitation when driving between 20 to 40 miles per hour , and can barley be felt only to a trained professionals. the engine does not misfire at idle or when accelerating to cruising speeds. the operator only drives 4 miles to wo... |
October 03, 2020 | |
| 2009 Mini Cooper S 1.6L MIL Lamp on VIN: WMWMF73569 P0420: Catalytic converter efficiency. ... 12 miles, obd monitor test for catalytic converter indicate pass and 1 miles later ,check engine light come on with code p0420 |
October 24, 2020 |
