Hello friends,

I have replaced the timing chain, guide rails, and camshaft adjusters on a W203 200 Kompressor with an M271 engine.

Now, I keep getting the error 2054-002 when the engine is warm and idling. When I check the camshaft values, the exhaust camshaft sporadically adjusts to about 90° while idling. Otherwise, the car runs fine, and when I give it a throttle blip, the values go back to -115°. Nevertheless, an error is logged.

I then replaced the camshaft adjusters again, but the same error still occurs. I have now ordered original parts and hope that this will solve the issue. Do you have any other tips for me?

I have checked:

Oil pressure
Timing (multiple times) 1st piston TDC (with dial gauge)
Compression
Solenoid valves (alignment)
New crankshaft gear
Vacuum hoses
Oil filter housing
I am really at my wits' end...

 

I feel your pain...
I think we got what you need:
camshafts have a sensor reluctor wheel simply pressed on.
Given enough rattling, it does slide late and cause "timing correlation faults".

Show us a bare camshaft without timing gear attached.

Let's first confirm this is your issue.

 

The reference mark on the camshaft is cast in and cannot “shift”...

Here is the part number of the camshaft so you can have a look at it

A 271 051 21 01

 

bare bone camshaft

reluctor wheel
the above is what can shift late...

 

The M271 really doesn't have this part...

 

I see your engine does not feature the loose reluctor issue.

Then we go back to... WHY/HOW :> Can we summarize this as: "The camshaft shifts at idle!"

That's a lot of new parts and items testing ok.
Ok, what else then......?

​​​​​​The way this happens makes me wonder if we are dealing with thin low oil pressure ...

What oil grade are you running?
How many miles is current oil?


> SCANNER TESTING:
Read the live VVT solenoid PWM value from ECU to see if it is maxed out to try offsetting for low available pressure.

 

It really only happens when the engine is at operating temperature... I have now bought an adjuster from Mercedes and will install it tomorrow and report back afterwards



The oil is 5W30, the oil pressure is 0.7BAR at idle and when the error occurs the oil pressure remains unchanged

 

I understood you've replaced timing gear twice already. Good enough.

Your 10psi idle pressure is the problem!
Not enough pressure to hold position. Timing gear is sent back to lock position.


5W30 oil quickly derates to become a thin 10W20 lubricant (BTW 0W40 derates into 15W30!)

Do your engine a favor....
use a 05/10/15W-40 oil rated "API SP", (not a "racing oil")
✌️

 

I have changed to 10W-40. The error has now been gone for 5 days, but has now reappeared. I have the feeling that the oil pump has a problem. What do you think?

 

yes, that is possible!
​​​​​​Some engine reduce oil pump pressure to benefit gas consumption at the cost of higher maintenance.

I don't think M271 features a solenoid to cut pump output in half.