Zoenation87

Hey guys I have a 06 Ml500 my ABS/ESP lights came on,Setting off my check engine light. I put it on scanner and received these codes P20CA,P20CC,P2004. Any assistance would be appreciated.... Thank you in advance.

Maj. Dundee

What scanner are you using?

Did you work on the MASS Air Flo Sensor at any time?

Code P20CA says there is a problem with the L/R speed sensor.

Zoenation87

no,no work was done on the MASS air flow sensor. And i am using this scanner on my vehicle

Zoenation87

I also read something about might needing to replace the Air Flap runner because they usually break over. Mercedes only sell the whole manifold. I’ve seen that a after market kit is being sold but non for my vehicle

Maj. Dundee

That air flap [problem is only for 272 & 273 eng, ML500s do not have the same intake.

Replace the left rear speed sensor and after that delete all codes and see what codes return.

Zoenation87

Alright thank you Maj I’ll definitely keep you updated.

Zoenation87

Hey Maj ,
replacing the rear speed sensors,fixed the abs and esp issue and the car was back driving great for a week,before the check engine light came on with the P2004 code again along with a P2013 code. Any ideas on what the issue may be.

Maj. Dundee

Are you saying that you got these two codes after replacing the sensor?

Zoenation87

Correct. It happened while my wife was driving. She said it started driving heavy then the check engine light came on. And those were the codes that came up

Maj. Dundee

Did you try deleting those codes?

Zoenation87

Yes I’ve rested the code and it has not prompted again. But it is driving kind weird like accelerating after a stop it kind of stutters or act as if its goin to stall out

Zoenation87

Hey Maj,any Ideas on what those codes could be indicating?

Maj. Dundee

Did you yourself replace the MAF Sensor?

Who did you buy it from?

Zoenation87

Actually no,I haven't replaced the MAF sensor at all. Ill look into ordering one ASAP,and will give you an update after bought and installed. Thanks in advance

Maj. Dundee

In post #3 you said this...........work was done on the MASS air flow sensor.

You are too confusing , I'm done with this thread.

Zoenation87

. IF YOU READ IT CORRECTLY I SAID AND I QUOTE NO,NO WORK WAS DONE ON THE AIR FLOW SENSOR NOT ONCE DID I SAID WORK WAS DONE ON IT. If anything ill start a new thread after i replace the MAF Sensor, so there won’t be any future confusion. Thank you and have a great one bud 👍🏾👍🏾👍🏾👍🏾

Maj. Dundee

This is what you said in post #3, and I'm still done here.