P0420 Diagnostic Trouble Code Discussion for December 2017
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2010 Chevrolet Equinox LT 2.4L MIL Lamp on VIN: 2CNALDEW8A P0420: . P0420 Present, found rear 02 sensors to be in spec no switching. FRONT 02 will go from .05 ma to .8ma fuel trims okay at idle ltft at around 2 long term at about 5. Around 100 degree difference in and out of converter. Lots of hits on identifix for convert... |
December 11, 2017 |
