Norwichdelta06

I did a search on this forum and only found 5 post. I went to autozone and pulled code p0025. And now im looking up the Camshaft Position Sensor. Kinda confused on which CPS to buy? Is there any difference changing a CPS on this mercedes then any other vehicle? You just unplug the current CPS. UNBOLT it... Bolt the new one and plug the existing wire in right? Because on that website theres one for 69.95 from BOSCH

http://www.mbpartswarehouse.com/part...921+4294960571

and partstrain has it for the same price also?

http://www.partstrain.com/store/deta...3-1794315.html

pcy

Replacing Camshaft Position sensor is nothing more than simply disconnecting the connector, remove the bolt, replace with new sensor, reconnect the connector. That's it.

While the diagnostic code refers to the sensor, more often it's the camshaft magnet behind that sensor is what is actually causing the issue. The magnet is around $19. So, if I were you, I 'd replace the magnet first, reset the code.

Norwichdelta06

This is going to sound stupid.. but the code is cleared now and it only comes on when its humid out.. and can you explain the magnet?

Glyn M Ruck

Johnand has a long thread on this problem on the M272. WIS tells you not to replace sensors only magnets. They have been redesigned. The problem can be intermittent. I will try & locate for you.

Glyn M Ruck

Here:

See from approx post # 57

https://mbworld.org/forums/c-class-w...osition+sensor

P0025 = "B" Camshaft Position - Timing Over-Retarded (Bank 2)

johnand

Also look at post# 113, that links to a thread with the service bulletin on this issue.

I would recommend replacing all 4 magnets, and be done with it.

Norwichdelta06

thx for your help!! So there are only 4 magnets that need to replaced for the whole engine?

johnand

Yes, there are 4 magnets total on the M272 engine since it is a quad cam design. They are cheap and easy to replace.

agp84

could someone give the location of the sensor for code p0025 ,and are all the magnets they sell online,the same for all sensors ??
thanks in advance

phister

All the same sensors you can look them up on rmeuropean

carbonfiberwhor

Good to know

jameyemail

So we got the same code....
since this is new to us...where is the sensor...does anyone have a picture as to where it is located? 2007 c230

jogger

see links from post #5