P0420 Diagnostic Trouble Code Discussion for October 2015
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2007 BMW 335xi 3.0L MIL Lamp on VIN: WBAVD535X7 P0420: Catalytic Converter Efficiency Bank 1. I'm having an interesting problem with this Bimmer. It had been in for rich condition problems a couple of weeks ago. At that time another shop had replaced 1 fuel injector and the high pressure fuel pump. We diagnosed it with leaking (and mismatched) injector... |
October 14, 2015 |
