I have a '95 C280 (M104 engine) and have a reoccuring CEL. The code is 'Adjustable camshaft timing solenoid without function (logic chain)' (P1341). My mechanic has replaced the camshaft adjuster magnet and the camshaft position sensor but the light continues to come on (the last time after 20 miles). What else could it be? What else will activate this CEL circuit?

The gear itself(binding)....hydraulic piston sticking in the gear...the MAP sensor that monitors the vacuum change.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Thanks for the suggestions M.B. Doc. What a help. Are any of these possibilities any more likely than any other?

I recently had a rebuilt throttle actuator put in with a few associated hoses. The EGR tube was also fairly plugged up and was therefore cleaned out. Would anything associated with the throtte actuator or EGR tube cause this 'camshaft timing' check engine light to come on?

I keep on getting the same code 'Adjustable camshaft timing solenoid' but the solenoid/magnet has been replaced along with the camshaft position sensor. The mechanic thinks it may be the OVP relay (even though it looks fine and there's no blown fuse). Is this really a possibility that it's bad and keeps triggering the CEL to come on?

That code is stored in the DM. Assuming everything regarding the function of the camshaft is ok, the DM itself may be at fault. That part has been updated several times. At certain operating conditions the DM will activate the camshaft during decel. While it does this it looks for the engine manifold vacuum to drop a certain percentage, confirming the camshaft is moving properly. When the vacuum change isn't within the specified parameters the the fault is set. The reason the DM has been updated several times is b/c at certain normal operating conditions the criteria for vacuum drop isn't acheived resulting in a bogus C/E light. Instead of throwing parts at a code you should have the car diagnosed by a competent shop to first determine that the function of the of the camshaft and it's associated components is ok. If everything checks out repacement of the DM with the latest version may be the solution. At over 1k$ you want to be sure that the DM will fix the issue before committing.