W203 M271 Camshaft oil leak

[Kaz073]

Please examine these pics. There's a notice amount of oil under the magnets and the connectors. Is this a problem as the connector modification was done about 10 years ago? Should i just clean off oil from the connectors and magnets and forget about it, or do they need to be replaced?

 

[Wighty]

Well you already have the wire extension blockers with the green tabs on so the wiring is safe from oil wicking along into the engine ECU which is a common M271 engine issue .
You do need to change the cam magnets though because when there is enough oil in the electrical plug you will get fault codes I believe , or at least that’s what happened to me last year

 

[Wighty]

CLK Camshaft Magnets P0020 ?

Went to start the CLK and got an engine management light on the dash . Hauled my trusty icarsoft MB2 from the other car and checked for codes . P0020 was shown as current with a description of A Camshaft Position Actuator Circuit / Open Bank 2 . Did a bit of reading and there are 2x Camshaft...

forums.mercedesclub.org.uk

 

[Kaz073]

Well you already have the wire extension blockers with the green tabs on so the wiring is safe from oil wicking along into the engine ECU which is a common M271 engine issue .
You do need to change the cam magnets though because when there is enough oil in the electrical plug you will get fault codes I believe , or at least that’s what happened to me last year

Thanks. I think I'll just clean off the magnets and connectors for now since I don't have codes relating to it at the moment and continue to monitor for codes/ further leaks.

 

[kgd]

Thanks. I think I'll just clean off the magnets and connectors for now since I don't have codes relating to it at the moment and continue to monitor for codes/ further leaks.

 

[kgd]

I’ve had the engine check light on now for about a month on my C200 Estate 2003 with 131,000 miles. So far I’ve changed the following
1. cam shaft sensor seal and little rubber plug
2 Fitted the “ pigs tail” to avoid oil leaking into the loom.
3. Following diagnostic test( Creator reader) fitted new “ downstream” 02 sensor
4. opened and cleaned the ECU ( some oil present) plus all plugs etc

Cleared the codes and engine light goes off for about 10-12 miles and then returns. Anyone have any ideas and any assistance would be appreciated

 

[LostKiwi]

Check the loom down to the O2 sensors. These can get oil contamination and cause errors.

 

[John77]

I’ve had the engine check light on now for about a month on my C200 Estate 2003 with 131,000 miles. So far I’ve changed the following
1. cam shaft sensor seal and little rubber plug
2 Fitted the “ pigs tail” to avoid oil leaking into the loom.
3. Following diagnostic test( Creator reader) fitted new “ downstream” 02 sensor
4. opened and cleaned the ECU ( some oil present) plus all plugs etc

Cleared the codes and engine light goes off for about 10-12 miles and then returns. Anyone have any ideas and any assistance would be appreciated

What codes are you getting? I have been living with intermittent engine light for about 18 months now. Same codes each time points to the MAF which I have changed. Rubber pipe in the engine bay from... can't actually remember it was so long ago, but members on here said it could be that. One day I will spend more time to find it. 2005 EClass

 

[John77]

Please examine these pics. There's a notice amount of oil under the magnets and the connectors. Is this a problem as the connector modification was done about 10 years ago? Should i just clean off oil from the connectors and magnets and forget about it, or do they need to be replaced? View attachment 75978 View attachment 75979 View attachment 75980

MB do do replacement seals, but in my experience they do not always make a difference.