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Discussion Starter · #1 ·
Anyone succesfully diagnose this before?

According to Vida some possible sources are

Intake air leakage
High fuel pressure
Leaking injectors
Damaged mass air flow (MAF) sensor
Contaminated engine oil
Oil level too high
Damaged heated oxygen sensor (HO2S) (bank 1).

I replaced both O2 sensors abount 1K miles ago when I replaced the angle gear collar / sleeve. I earsed the fault code and drove approximately 250 miles with no instance of the code.

My R has 91K mikes on it and I just replaced the engine oil at 90K (which is when I confirmed I no longer had AWD)

This code was visable before I changed the oil I am only ruling that and the O2 Sensors out as a possibel cause.

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Discussion Starter · #2 ·
Update.

Since I have had this error code I have noticed on occasion that the engine does not start as consistent as it should. Sometimes it will fire up quickly while other times it turns over for a few revolutions. On rare occasions, it will fire up for a second or two and run very rough and then stall. When this happens the engines fire up without issue on the next attempt.

Any help would be appreciated.
 
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