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P0422 Diagnostic Trouble Code Discussion for March 2014

Catalyst Efficiency Below Normal (Bank 1)

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Trouble Ticket Help Requests for DTC P0422
Help Request Posted
2005 Mercedes-Benz E55 AMG 5.5L Cuts out VIN: WDBUH76J35
P0422: Insufficient rightcatalytic converter. This car is really getting under my skin. We have a 2005 Mercedes E55 AMG wagon that holds back (lean misfire) on acceleration starting at about 1800 rpm. Now, before you guys start telling me to replace the Air Mass Sensor, it is an AMG and it doesn't have on...
March 26, 2014