Code Confusion 04 C230K - MBWorld.org Forums

Jul 25, 2019 | 01:04 AM

greenfieldhippi

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Newbie

Joined: Jul 2019

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From: Texas

2004 C230K

Code Confusion 04 C230K

First off, hello! This is my first post on the forum and I'm here because I am completely stumped. I got the codes that are in the pic. I then tested the coil packs, replaced the spark plugs, replaced the fuel injectors, and replaced the downstream 02 sensor.

Last edited by greenfieldhippi; Jul 25, 2019 at 01:33 AM.

Jul 25, 2019 | 09:37 AM

rwb001

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Joined: Feb 2019

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2003 C230K

Check your upstream O2 sensor. The downstream O2 sensor is for emissions only. The upstream is what reads the A/F ratio.

Aug 3, 2019 | 10:13 PM

greenfieldhippi

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From: Texas

2004 C230K

Sorry for the late response! I ordered the upstream from rock auto and they sent the wrong one I will be buying the correct one and giving that a shot very soon and update when I do.

Aug 16, 2019 | 09:09 PM

greenfieldhippi

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Joined: Jul 2019

Posts: 14

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From: Texas

2004 C230K

Figures

I changed it out and that was the culprit. How ever she is now dumping oil. I used dye and I'm thinking it could be the O-ring on my oil filter so I'm going to replace and continue on my search. Hopefully that's the solve but I'm not putting a ton of faith in that being the only source.

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