jerryml430

Hi all,
I know that some of you will get mad at me because we have thread about those code and i did search already and i got an idea but i really would like to share my problem and see if you guys would be able to help me out. So my car is 2006 c230 and it has 71k on it. I did a post couple days ago about cel with the code P0022 which is the intake camp sensor. I went to the shop on Thursday and they replaced it for me then later on the same day i went to get a change oil and they used the rcommended oil and oil filter and we took a look at the air filter which was really dirty, i could not believe it so anyways the guy order 2 air filter and replaced it. So that night i drove the car for about 100 mile and i drove it to work on friday with no problems. On satarday morning i'm about to leave to work and the cel came back on. I went to work and the car drive fine so late that night i was leaving from work and when i start the car it start fine but the muffler tip were shaking for like 15 seconds and it went back to normal and the car drive fine. This morning i took it to kragen, auto zone and to car quest to get the code and 3 of them told me that they don't do that anymore so i drove it to the shop and the car gave 3 codes, P0022 which was replaced on thursday already then it gave P0173 fuel trim and P0170 fuel trim code. So do you guys have any idea?

Glyn M Ruck

Damn - You are not having much luck. I'm speculating here. The P 0022 was a stored code not cancelled when the cam sensor was replaced. The P 0170 & 0173 codes are fuel trim on both banks. It is possible that the car has not settled it's fuel trim from replacement of the clogged air cleaners. Cancel all codes. Drive the car for a reasonable distance & see what returns. If they all return - go back to the shop that changed the cam sensor & tell them to check it and the wiring. If the fuel trim codes return the first thing to check is the vacuum hoses for an air leak. They could have been disturbed when changing the sensor & not reconnected properly.

After this - if you have no success - because the fuel trim is out on both banks you will have to check the MAF.

Good luck

jerryml430

Will do today, I just called my brother in law to pick up the car and take to his friend shop then will see what will happen after, wish me luck please. So if its the maf i'm looking at $400 just for the part right?

Glyn M Ruck

Yes but it might just need cleaning with MAF cleaner.

jerryml430

Cool what stuff should I use to clean it? Do we have a thread here to show steps to clean or should I take it to the shop and tell them to clean?

Buellwinkle

Shop won't clean it, not enough money in it for them. They just replace it for $600. If you want to clean it, go to an auto supply store like Pep Boys and get CRC MAF Sensor Cleaner, about $6 for a large can. If they don't have it, go somewhere else. You have to remove it and take it apart to find the actual sensor and spray the heck out of the tip that has the gold wire. Do not touch it with anything, especially your fingers. Don't know where it is on your car, but it's usually at the back end of the air cleaner box.

Glyn M Ruck

Take off air cleaner. MAF is very obvious - its at the back of the V against the firewall behind the inlet manifold. Airbox fits straight into the MAF

System:

jerryml430

Thanks for the info. Its funny, my brother in law took my car to his friend shop early this morning so they pull the codes and told him that I have to replace the second cam sensor, they told him that when u get the code p0022 we have to replace both since there is two on it. They think that the cam sensor is causing the other codes. So let's get back to clean the maf, I found it place last night and I was trying get it out but I didn't know how to pull the wire that connected to it. You know guys how there is a little tiny gray plastic thing that lock the adapter or the wire I took it out and lost it, do they have them at auto zone or I have to drive to dealer?

JLD2k3

Autohausaz (or something like that) has the MAF for ~$200. Much better than the dealer price of $400.

Glyn M Ruck

You don't have to replace both sensors. Only the faulty one. Johnand has just done one under warranty. You might have replaced the wrong sensor.

You lost the clip? Are you sure it's not lying on the bottom plate?

I can't advise you where to buy spares. Been out of the US too long.

jerryml430

lol just figured out from the paper that the guy at the shop replaced the one on the leaft side instead of the driver side so going tomorrow to replace the other one

Glyn M Ruck

Funny you should mention that. I've been helping a member by PMs with O2 sensors & they replaced the wrong side. Dealer did not know which side was Bank 1 & which side Bank 2.

& Benz dealers wonder why we don't trust them!!!

jerryml430

ok so i got sick of the cel and i took it to the shop to see what's going on with the car. they kept it there for a day to diagnose it, so they figured out the car or the engine is running too rich. the guy told me that we need to replace the maf and they order one already so i'm going there this week so they could fit it in. i was searching this forum and saw that a leak on the cam sensor would cuze the engine to run too rich or if there is a vaccum leak would cuze the same problem. so my question is when they diagnose the car does it show if there is a vaccum leak or no? if not i have to mention that when i go to the shop. the code they were getting is for the cam senosr which been replaced already and the other one p0173 and p0170 and i know its related to fuel trim

Glyn M Ruck

Sorry - been on vacation in Thailand just back. With both banks showing fuel trim it is likely the MAF but a vacuum leak can cause the car to run lean on both banks. Let them put in a new MAF if cleaning does not work but if the codes return & it's a vacuum leak make them put the old MAF back & credit you.

jerryml430

how was your vacation? hope you enjoyed it. So i got the maf replaced last week and now i'm done with those codes but the cel came back and i went to the shop today to see what's going on and it say that the cam sensor is not adjusted. they reset the light i drove the car most of the day today with no problems will see if it will come back later but i hope not

Glyn M Ruck

Good news! - thanks for asking - vacation was great.

johnand

Glyn is right. Don't have to replace both, just the bad 1. There are 4 total. 2 intake, and 2 exhaust.

I didn't get mine replaced under warranty. I got the CEL P0022 once. I pulled the connector, cleaned the contacts with denatured alcohol, and reset the CEL. ~5K miles now and still no CEL. Those sensors are too damn expensive to just replace on a CEL.

Why do the dealer and shops keep throwing out the BS, that the cam sensors need adjustment when replaced? I have the STAR WIS service manual, and it says nothing about adjustment when replacing. The holes for the sensor aren't slotted or anything, so if there is an adjustment, it must be through STAR.

Glyn M Ruck

Sorry John - forgot you had to cough up for your sensor - you were just out of warranty.

There is no adaption required for these sensors that I know of. The ECU just pics up the input & settles down to it after a few minutes of running. What people do forget to d

jerryml430

ok guys i'm getting tired of this thing, the cel is back about an hour ago. have to go to the shop next week to see if it still giving the code for the cam sensor or if it says something about adjusting. well do you know what the name of those parts? So on the driver side there is two cam sensor that go inside that gray or silver thing what is the name of it? then what is the name of the plastic part which has the wires that go into the cam sensor? i hope that is clear enough

Glyn M Ruck

Explain

https://mbworld.org/forums/attachmen...80504-1-23.pdf

jerryml430

lol i don't think picture is from a 2006 c230 but anyways let me explain what i'm talking about, hope i'll do better this time. so let say that you need to change the cam sensor on the driver side, first you have to pull that clip which has the wire which is connected to the cam sensor right? so this the first one what the name of that clip with the wire? then u have to unscrew the cam sensor and pull it out from that gray kind of rounded thing right? whats the name of that gray rounded part? hope i did better this time cuze if not then i have to go and take a picture but i don't really wanna do that

Glyn M Ruck

That picture of the M272 quad cam V6 engine's cam sensors is direct from the Benz training course of differences between the M112 SOHC V6 engine which I have & the M272 DOHC engine that you have. You do have a M272 V6 engine - not so?

PM Johnand - he is used to working on the M272 & might understand you better than I am.

jerryml430

man i gave you hard time ha, anyways is there anything that called the cam actuator? they told me today that it seems that i have to replace that thing. i hope its not that expensive

Glyn M Ruck

They either mean the solenoids shown in the previous picture with the sensors I posted or the adjusters themselves. Solenoids fairly cheap - Adjusters expensive.

See adjusters.

jerryml430

i took a picture of what they were talking about and i'll post it later on, thanks for the info man