M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

ML320: Code: P2050 / P2051: HELP !!!!

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Old 03-25-2008, 06:06 PM
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Mercedes Benz
ML320: Code: P2050 / P2051: HELP !!!!

I have a 2003 ML320.
The check engine light keeps going on and off and car starts shaking.

The scanner gave the following codes:

P2050: Misfiring Damages TWC P0300

P2051 : Misfiring cylinder 1 damages to TWC.

Sometimes it gives misfiring to cylinder 1, then 4 then 6 and so on.

One mechanic said the ECU unit needs to be replaced as the injectors dont get power.

The other TWO mexchanics said to chnage the spark plugs and ignition wires, which we did, but same problem.

WHAT COULD IT BE..?? PLEASE HELP !!
Old 03-26-2008, 03:21 PM
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1988 300E, 1973 450 sl, 1999 ML320, 1986 300E, 1985 190D
Wow

P2050 Reductant Injector Circuit/Open
P2051 Reductant Injector Circuit Low
it sound like that the truck needs to get the injectors cleand
Old 04-25-2008, 06:24 PM
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Originally Posted by davethebenzman
P2050 Reductant Injector Circuit/Open
P2051 Reductant Injector Circuit Low
it sound like that the truck needs to get the injectors cleand
or replace BTW is cheaper (IMO)

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