[EdL]

P0016 and P0016 pending. Dealer replaced necessary parts. Code reappeared 5 days later. Dealer reprogrammed computer. Code reappeared. Any idea as to why.

 

[Avel Du]

P0016 and P0016 pending. Dealer replaced necessary parts. Code reappeared 5 days later. Dealer reprogrammed computer. Code reappeared. Any idea as to why.

Is this an MB dealer, or general dealer?

 

[EdL]

An MB dealer

 

[VII7]

This is not a reprogram problem on that engine.
Any symptoms?
You likely need a new tensioner and chain.

 

[EdL]

This is not a reprogram problem on that engine.
Any symptoms?
You likely need a new tensioner and chain.

Those items were replaced along with the guides and adjusters. The only symptoms I had was a slight misfire that only lasted 3 to 4 seconds one time. The reprograming was a suggestion from Mercedes.

 

[VII7]

Have both sensors and actuators been replaced?

 

[EdL]

Have both sensors and actuators been replaced?

Yes both have been replaced. All work has been performed at a MB service center.

 

[VII7]

Would need to review with the oscilloscope but the most likely scenario is timming was not set correctly.

 

[EdL]

Have both sensors and actuators been replaced?

Would need to review with the oscilloscope but the most likely scenario is timming was not set correctly.

Service center stated they removed valve cover to verify timing. I have heard changing the oil has sometimes turned the MIL off. The oil was changed 500 miles ago. Is there a sensor in the oil?

 

[VII7]

No.
This error is about the physical position of the crankshaft relative to the camshaft.
This is determined via two sensors (hall effect IIRC) one on the crankshaft and one on the camshaft.
The camshaft and crankshaft are tied together by the timming chain which is kept in place by the tensioner.
The positioning can be influenced by the variable timing adjuster mounted on the end of the camshaft via the oil supply actuator.
You either have:
A defective sensor
A defective actuator solenoid
A defective adjuster.
Incorrectly set timming chain
A damaged ECU
A damaged camshaft or crankshaft in the sensing area (this would be very rare)

 

[EdL]

No.
This error is about the physical position of the crankshaft relative to the camshaft.
This is determined via two sensors (hall effect IIRC) one on the crankshaft and one on the camshaft.
The camshaft and crankshaft are tied together by the timming chain which is kept in place by the tensioner.
The positioning can be influenced by the variable timing adjuster mounted on the end of the camshaft via the oil supply actuator.
You either have:
A defective sensor
A defective actuator solenoid
A defective adjuster.
Incorrectly set timming chain
A damaged ECU
A damaged camshaft or crankshaft in the sensing area (this would be very rare)

Thank you VII7. I will check with the service center to see if they have rechecked those components.

 

[EdL]

Thank you VII7. I will check with the service center to see if they have rechecked those components.

Issue has been resolved. Service center did several adaptations and code is now gone.