2015 ML350 M276 Cam position sensor problem
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Joined: Mar 2018
Posts: 323
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From: Central Florida
'15 C400 and '15 ML350
2015 ML350 M276 Cam position sensor problem
Have just at 110k miles on our ML350 with the M276 motor. Has given me zero problems until a recently a coil pack went out on the passenger side, then another one went out. I replaced all 6 of them and the car has been good a few weeks then the other morning CEL and a slew of codes. Car starts and runs but idles poor and drives, well, like it has 3 cyl misfiring (b/c it does).
Active codes are :
P13B2 - MB specific code which im not sure what it is. my scan tool just says see manual
P0368 -Camshaft Position Sensor "B" Circuit Low
P0364 - Camshaft Position Sensor "A" Circuit Low
P2088 - A Camshaft Position Actuator Control Circuit Low Bank 1
P2090 - B Camshaft Position Actuator Control Circuit Low Bank 1
Pending codes for cyl 1,2 and 3 missfire/ coil pack. (to be expected with cam issue)
I pulled the bank 1 cam position sensors and plan to replace one or both of them tomorrow. The intake one has some oil bypassing the connector.
None of the cam adjustors have any oil leakage.
Thoughts on this being simply just a bad cam sensor? Why would i have codes for A and B sensors? I assume A is intake and b is exhaust cam.
I thought about replacing both bank 1 cam adjustors as well but dont want to just throw parts at it.
Clearing the code and starting the car i just get P13B2 active and then the first 2 for cam sensors come back after a min.
Active codes are :
P13B2 - MB specific code which im not sure what it is. my scan tool just says see manual
P0368 -Camshaft Position Sensor "B" Circuit Low
P0364 - Camshaft Position Sensor "A" Circuit Low
P2088 - A Camshaft Position Actuator Control Circuit Low Bank 1
P2090 - B Camshaft Position Actuator Control Circuit Low Bank 1
Pending codes for cyl 1,2 and 3 missfire/ coil pack. (to be expected with cam issue)
I pulled the bank 1 cam position sensors and plan to replace one or both of them tomorrow. The intake one has some oil bypassing the connector.
None of the cam adjustors have any oil leakage.
Thoughts on this being simply just a bad cam sensor? Why would i have codes for A and B sensors? I assume A is intake and b is exhaust cam.
I thought about replacing both bank 1 cam adjustors as well but dont want to just throw parts at it.
Clearing the code and starting the car i just get P13B2 active and then the first 2 for cam sensors come back after a min.
Last edited by MatthewJ; Jun 17, 2022 at 01:25 PM.
Thread Starter
Senior Member
Joined: Mar 2018
Posts: 323
Likes: 103
From: Central Florida
'15 C400 and '15 ML350
Update: It was not a cam sensor, or anything cam related.
As it turns out i had the #1 coil pack (less than week old) fail and short internally blowing the #217 fuse which happens to run power to engine controls like cam adjustors and cam position sensors..
Replaced the 20amp fuse, started the car and got a big puff of smoke, the coil shorted through the side and arced out on the motor. this is when i caught that it was a bad coil causing the blown fuse.
Replaced fuse again and put in an old 110k mile coil and car runs good again.
This is the second time i had a Beru coil go bad within a week of use. Not sure if there is a bad batch that FCP euro has or if i have an engine ground issue that will show itself in a few more weeks.
Time will tell.
As it turns out i had the #1 coil pack (less than week old) fail and short internally blowing the #217 fuse which happens to run power to engine controls like cam adjustors and cam position sensors..
Replaced the 20amp fuse, started the car and got a big puff of smoke, the coil shorted through the side and arced out on the motor. this is when i caught that it was a bad coil causing the blown fuse.
Replaced fuse again and put in an old 110k mile coil and car runs good again.
This is the second time i had a Beru coil go bad within a week of use. Not sure if there is a bad batch that FCP euro has or if i have an engine ground issue that will show itself in a few more weeks.
Time will tell.
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
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From: unbegrenzt
2017 GLE350 4MATIC
Update: It was not a cam sensor, or anything cam related.
As it turns out i had the #1 coil pack (less than week old) fail and short internally blowing the #217 fuse which happens to run power to engine controls like cam adjustors and cam position sensors..
Replaced the 20amp fuse, started the car and got a big puff of smoke, the coil shorted through the side and arced out on the motor. this is when i caught that it was a bad coil causing the blown fuse.
Replaced fuse again and put in an old 110k mile coil and car runs good again.
This is the second time i had a Beru coil go bad within a week of use. Not sure if there is a bad batch that FCP euro has or if i have an engine ground issue that will show itself in a few more weeks.
Time will tell.
As it turns out i had the #1 coil pack (less than week old) fail and short internally blowing the #217 fuse which happens to run power to engine controls like cam adjustors and cam position sensors..
Replaced the 20amp fuse, started the car and got a big puff of smoke, the coil shorted through the side and arced out on the motor. this is when i caught that it was a bad coil causing the blown fuse.
Replaced fuse again and put in an old 110k mile coil and car runs good again.
This is the second time i had a Beru coil go bad within a week of use. Not sure if there is a bad batch that FCP euro has or if i have an engine ground issue that will show itself in a few more weeks.
Time will tell.
Thread Starter
Senior Member
Joined: Mar 2018
Posts: 323
Likes: 103
From: Central Florida
'15 C400 and '15 ML350
I stick to OE parts when I can, but they are out of stock most places at the moment. This was supposed to be OEM replacement.
ANyone have engine ground location that the bank 1 could would use? Might as well clean it up for good measure.
ANyone have engine ground location that the bank 1 could would use? Might as well clean it up for good measure.
Newbie
Joined: May 2023
Posts: 4
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ML350
I'm having the same issue. Had P0300 Code and a bunch of cam codes I replaced plugs, plug connectors and all the cam sensors.Codes went away .Now I have code P13B2 and fuse 217 keeps blowing. How do I check the coli to find the one that is failing
Thread Starter
Senior Member
Joined: Mar 2018
Posts: 323
Likes: 103
From: Central Florida
'15 C400 and '15 ML350
Should get a P0301-306 code for whichever cyl isn't firing. You may have to replace the fuse to get it running, and yes it will blow that fuse too if it's arcing out.
did you replace the coils too or just the connectors?
did you replace the coils too or just the connectors?
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Newbie
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ML350
I haven't replacement any of the coils.. The fuse blows instantly
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Thread Starter
Senior Member
Joined: Mar 2018
Posts: 323
Likes: 103
From: Central Florida
'15 C400 and '15 ML350
I would unplug one bank of coils, replace fuse and see if it holds to narrow down which side is shorting. Fuses are cheap, coils are not but with the mileage you might consider just replacing all of them if one went bad.
mine was evident visually as it arced through the exterior and to a screw on the valve cover.
mine was evident visually as it arced through the exterior and to a screw on the valve cover.
Thread Starter
Senior Member
Joined: Mar 2018
Posts: 323
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From: Central Florida
'15 C400 and '15 ML350
They superceded that part number with a better coil from the AMG models. Dealer should be able to give you part number based on your VIN.
updated ones are Bosch.
updated ones are Bosch.
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Thread Starter
Senior Member
Joined: Mar 2018
Posts: 323
Likes: 103
From: Central Florida
'15 C400 and '15 ML350
Fcp refunded them and I replaced with ones from the dealer which were of a superceded part number from the AMG motors and is made by Bosch. Haven't had any issues since.
MBWorld God!
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Had 1 of the original coils go bad (110k miles) causing misfire under load. Replaced it with a Beru brand coil (bc that was the brand on the original MB ones). Decided to replace the other 5 and then started having the replacement coils fail one after another with very low miles. One failed so bad it arc'd through the pack to a bolt on the valve cover.
Fcp refunded them and I replaced with ones from the dealer which were of a superceded part number from the AMG motors and is made by Bosch. Haven't had any issues since.
Fcp refunded them and I replaced with ones from the dealer which were of a superceded part number from the AMG motors and is made by Bosch. Haven't had any issues since.
Member
Joined: Apr 2017
Posts: 134
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2014 ML350
Sorry to revive this thread but I'm having the same issue. Took the car to my Indy shop to have the plugs and coils replaced as recommended. Since my ML is at 92k miles now. Ran great for a couple of weeks and then misfires on cyl 1 2 3 plus cam sensor errors. Coils are beru. Took it back to my Indy guy and he swapped the coils again with no luck. I mentioned fuse 217 to him but he said all fuses are good. I'm going to tow it back to my place to try to dig further. It sucks that he threw out the original plugs and coils. He seems to think there's a problem with the ecu. How likely is that?
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
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From: unbegrenzt
2017 GLE350 4MATIC
Sorry to revive this thread but I'm having the same issue. Took the car to my Indy shop to have the plugs and coils replaced as recommended. Since my ML is at 92k miles now. Ran great for a couple of weeks and then misfires on cyl 1 2 3 plus cam sensor errors. Coils are beru. Took it back to my Indy guy and he swapped the coils again with no luck. I mentioned fuse 217 to him but he said all fuses are good. I'm going to tow it back to my place to try to dig further. It sucks that he threw out the original plugs and coils. He seems to think there's a problem with the ecu. How likely is that?
Member
Joined: Apr 2017
Posts: 134
Likes: 28
2014 ML350
Oil found on a few connectors for the cam position sensors. Also found fuse 217 blown. That's the last time I bring it to this Indy shop. They used to be good but not anymore. I ordered all of the new sensors and a bunch of contact cleaner. Hopefully I can get the car back on the road this weekend.
Thread Starter
Senior Member
Joined: Mar 2018
Posts: 323
Likes: 103
From: Central Florida
'15 C400 and '15 ML350
Oil found on a few connectors for the cam position sensors. Also found fuse 217 blown. That's the last time I bring it to this Indy shop. They used to be good but not anymore. I ordered all of the new sensors and a bunch of contact cleaner. Hopefully I can get the car back on the road this weekend.
I had one of my sensors with slight oil seepage when i was diagnosing our ML, replace it for peace of mind. Checking the cam sensors for oil leak should probably be added to the 100k mile maint checklist IMO.
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From: US
2008 E350, 2012 ML350, 2014 E350, 2015 ML350
Glad you gave it a second look. The fuse is such an easy thing to check, wonder why they didnt do it when you asked them to.
I had one of my sensors with slight oil seepage when i was diagnosing our ML, replace it for peace of mind. Checking the cam sensors for oil leak should probably be added to the 100k mile maint checklist IMO.
I had one of my sensors with slight oil seepage when i was diagnosing our ML, replace it for peace of mind. Checking the cam sensors for oil leak should probably be added to the 100k mile maint checklist IMO.
MBWorld God!
Joined: Dec 2019
Posts: 32,222
Likes: 6,281
Had 1 of the original coils go bad (110k miles) causing misfire under load. Replaced it with a Beru brand coil (bc that was the brand on the original MB ones). Decided to replace the other 5 and then started having the replacement coils fail one after another with very low miles. One failed so bad it arc'd through the pack to a bolt on the valve cover.
Fcp refunded them and I replaced with ones from the dealer which were of a superceded part number from the AMG motors and is made by Bosch. Haven't had any issues since.
Fcp refunded them and I replaced with ones from the dealer which were of a superceded part number from the AMG motors and is made by Bosch. Haven't had any issues since.
Member
Joined: Apr 2017
Posts: 134
Likes: 28
2014 ML350
Got all issues corrected. Replaced all ignition coils with Bosch units and replaced all camshaft position sensors and solenoids. Only 2 position sensors started to pass oil. No oil made it to the ECU. Looks like they just started to pass oil. Both intake cam sensors were leaking. Exhaust cam sensors were dry. Car runs like it should again with no trouble codes. I should have just done the work myself to begin with. It was just difficult to find the time. By the way, I notice FCP Euro doesn't sell the Beru coils anymore. They only supply the Bosch units now. Maube they had too many issues with the Beru coils.
