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2013 ml 350 with about 90,000 miles with persistent check light engine on. It beens on for about a year reading the same code of p001964, "The position of the exhaust camshaft (cylinder bank 2) is Implausible relative to the position of the Crankshaft. There is an implausible Signal". Initially the car had a hard start , the camshafts were replaced and the hard start was gone. Oil changes have been done. But yet the check engine light is still on. The camshaft sensors were checked that seems to be fine. I have gotten suggestions of changing the crankshaft sensor or timing reset but I'm still skeptical. As far as the driving the vehicle, it drives okay for the most part but I notice occasional slow acceleration. Anyone familiar with this particular problem in this vehicle offer any more suggestions?
2013 ml 350 with about 90,000 miles with persistent check light engine on. It beens on for about a year reading the same code of p001964, "The position of the exhaust camshaft (cylinder bank 2) is Implausible relative to the position of the Crankshaft. There is an implausible Signal". Initially the car had a hard start , the camshafts were replaced and the hard start was gone. Oil changes have been done. But yet the check engine light is still on. The camshaft sensors were checked that seems to be fine. I have gotten suggestions of changing the crankshaft sensor or timing reset but I'm still skeptical. As far as the driving the vehicle, it drives okay for the most part but I notice occasional slow acceleration. Anyone familiar with this particular problem in this vehicle offer any more suggestions?
Open the connectors on the cam magnets and cam position sensors and check for presence of oil.
Is your engine in the affected range to have timing chain tensioner check valves installed?
Follow @chassis advice, disconnect the camshaft sensors/solenoids connectors, get a good flash light and look into the harness side or the sensor side for some kind of shiny oily residue. If so, start the cleaning and parts replacing process starting with the sensor in question. If every sensor/solenoid connector is dry, you can either swap bank 1 with bank2 sensors, delete the error code and drive the car again to see if the code returns. What kind of diagnostics tool/scanner do you have ?
I have attached the document @chassis was referring to (I think it is)
Follow @chassis advice, disconnect the camshaft sensors/solenoids connectors, get a good flash light and look into the harness side or the sensor side for some kind of shiny oily residue. If so, start the cleaning and parts replacing process starting with the sensor in question. If every sensor/solenoid connector is dry, you can either swap bank 1 with bank2 sensors, delete the error code and drive the car again to see if the code returns. What kind of diagnostics tool/scanner do you have ?
I have attached the document @chassis was referring to (I think it is)
yes I don't think its the camshaft. At this point and from my research it either the camshaft adjusters or the control oil valve ( I'm leaning more into the latter part). The camshaft sensors were swapped and no issue with the sensor. I have gotten the car scanned at different shop and its all reading the same thing.
yes I don't think its the camshaft. At this point and from my research it either the camshaft adjusters or the control oil valve ( I'm leaning more into the latter part). The camshaft sensors were swapped and no issue with the sensor. I have gotten the car scanned at different shop and its all reading the same thing.
Recall first KISS.
Like @chassis advised:
1 - Is your serial number in the list from the document?
2 - start by inspecting the connectors, if dry move to the next step
3 - swap sensor/solenoids, i.e. intake<->exhaust on the same side and see if the code swap from the exhaust to intake as well, if not next step
4 - Continue digging deeper.
yes I don't think its the camshaft. At this point and from my research it either the camshaft adjusters or the control oil valve ( I'm leaning more into the latter part). The camshaft sensors were swapped and no issue with the sensor. I have gotten the car scanned at different shop and its all reading the same thing.
This is your vehicle's datacard.. Engine serial number : 276955 30 331304 .. If I read the document correctly, your engine is within the list in the document --> Requires fixing
Follow @chassis advice, disconnect the camshaft sensors/solenoids connectors, get a good flash light and look into the harness side or the sensor side for some kind of shiny oily residue. If so, start the cleaning and parts replacing process starting with the sensor in question. If every sensor/solenoid connector is dry, you can either swap bank 1 with bank2 sensors, delete the error code and drive the car again to see if the code returns. What kind of diagnostics tool/scanner do you have ?
I have attached the document @chassis was referring to (I think it is)
I was told the camshaft were replaced, but it been about a year now. Only thing I notice with the car that is slow to accelerate . I had another mechanic check the sensors after the camshaft replacement. , they were swapped and they were fine.
This is your vehicle's datacard.. Engine serial number : 276955 30 331304 .. If I read the document correctly, your engine is within the list in the document --> Requires fixing
The engines listed in that document have some initial issues: rattling noise at startup which seems (based on the repair) to be due to low oil pressure at startup on the chain tensioner and basically, anything lubricated at the top of the engine: camshafts, adjusters, etc. I firmly believe that low oil pressure for too long on those components will start wearing out some of the components. So far, from the forum members reporting issues with these engines, the noise comes first. Other seems to skip the noise and start with codes related to camshaft adjusters (or perhaps worse oil leaking through the sensors and triggering intermittent failures)
If your engine was opened a year ago for camshafts on that bank and was not retrofitted with the chain tensioners and check valves as described in the document, someone missed the repair big time. In addition, if the camshaft needed replacement I would be surprised if the adjusters were not also damaged.
The engines listed in that document have some initial issues: rattling noise at startup which seems (based on the repair) to be due to low oil pressure at startup on the chain tensioner and basically, anything lubricated at the top of the engine: camshafts, adjusters, etc. I firmly believe that low oil pressure for too long on those components will start wearing out some of the components. So far, from the forum members reporting issues with these engines, the noise comes first. Other seems to skip the noise and start with codes related to camshaft adjusters (or perhaps worse oil leaking through the sensors and triggering intermittent failures)
If your engine was opened a year ago for camshafts on that bank and was not retrofitted with the chain tensioners and check valves as described in the document, someone missed the repair big time. In addition, if the camshaft needed replacement I would be surprised if the adjusters were not also damaged.
at this point, things do not seem to add up.
Yes someone has messed up big time. So initially I had the rattling noise, the hard start and check engine. At the first workshop , my camshaft was allegedly replaced but upon arrival, the car came exactly the same , rattling noise, with hard start and engine light. I took another workshop whereby the camshaft was allegedly replaced but this time the came back without the hard start or rattling noise. But still the check engine is still on. With the consistent p0019 code.
Not sure what to tell you, but something is NOT consistent.
How much did you pay for the camshaft replacement? Here is a conservative estimate of how much that will be around here in Florida
and doing twice, it makes no sense.. Dealer estimate would have been higher. It is not a 1 hour job by any means of the imagination
The engines listed in that document have some initial issues: rattling noise at startup which seems (based on the repair) to be due to low oil pressure at startup on the chain tensioner and basically, anything lubricated at the top of the engine: camshafts, adjusters, etc. I firmly believe that low oil pressure for too long on those components will start wearing out some of the components. So far, from the forum members reporting issues with these engines, the noise comes first. Other seems to skip the noise and start with codes related to camshaft adjusters (or perhaps worse oil leaking through the sensors and triggering intermittent failures)
If your engine was opened a year ago for camshafts on that bank and was not retrofitted with the chain tensioners and check valves as described in the document, someone missed the repair big time. In addition, if the camshaft needed replacement I would be surprised if the adjusters were not also damaged.
at this point, things do not seem to add up.
okay, can you please provide the actual link with those complaints ?
As for the actual complaints, google, mbworld, benzworld are your friends. The keywords include: M276, M278, rattling noise, camshaft adjusters, oil migration, CEL, video, NHTSA
As for the actual complaints, google, mbworld, benzworld are your friends. The keywords include: M276, M278, rattling noise, camshaft adjusters, oil migration, CEL, video, NHTSA
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