P0349 Camshaft position sensor A circuit intermittent Bank 2 - 2015 Jeep Wrangler 2-door Sport

[borow67]

I hope you can help with this I can’t figure out a solution.

My Check engine light and ESC light go on whenever the engine is under strain. I’m not talking 4 wheeling but it does it on regular roads with a hill. I live in the Utah mountains so this makes it a big problem. The engine code is P0349 Circuit Intermittent Bank 2 Sensor One. Another computer says P0349 Camshaft position sensor A circuit intermittent Bank 2.

At first I thought it was the ESC that was throwing things off. Now I’m convinced it’s the engine code and the ESC shows the Jeep is going into limp mode. If I turn the engine off and restart the ESC light goes off until it hits limp mode again. The engine light stays on.

Here is what happens:

1. When going uphill on a highway or a regular road, the engine light goes on soon followed by the ESC light and the engine goes into limp home mode.
2. The engine light reads with code P0349 Camshaft position sensor A circuit intermittent Bank 2.
3. ABS light does not come on so not the ESC/ABS control module or speed sensors. Plus no codes
4. No codes showing the ESC had been on.

What I’ve done to try and fix it when I thought the ESC light was the cause:

1. Tracked true and the steering wheel is straight but had a 4-wheel alignment done anyway.
2. Made sure all 4 tires had the exact same air pressure.
3. Tested the yaw control by whipping around corners and traffic circles. It does not go on and stay on. When triggered the ESC light flashes then goes off.
4. Tested in wet conditions. Again, It does not go on and stay on. When triggered the ESC light flashes then goes off.

To try and fix the engine light issue:

1. I replaced both camshaft position sensors.
2. Full tune-up. Plugs, oil, crankcase fluid, differential fluid, etc.
3. Tightened the oil galley plugs just below the camshaft-phasers on the driver’s side and used blue loctite
4. The battery is less than a year old and all connections are tight and corrosion free
5. Changed the pigtail/connector on the driver-side camshaft position sensor – checked and triple-checked the circuit with a meter
6. Switched the camshaft position sensors from the driver’s side to the passenger's side to check for a bad sensor even though they were both new.
7. Ran a tank of Cataclean
8. With each of these, I disconnected the negative battery cable to reset the codes.

The truck does not have a lift but wears 33’s and it has had those size tires for years before this started happening.
All this and it is still throwing the code P0349 Camshaft position sensor A circuit Intermittent Bank 2!
I’m at a loss as to what to do next. Any help would be greatly appreciated!

 

[RESURECTIONJK]

I hate to break it to you but, I just went through this and this isn’t likely going to be cheap. It needs to go to a proper shop who is familiar with this stuff. Mine ended up being a stretched timing chain, broken guides and stripped intake cam gear, 3 burnt exhaust valves and a host of other issues. I got bit hard by the 3.6 demons. Hopefully yours isn’t as bad but, prepare yourself.

 

[borow67]

Ugh, great. Was the problem all on the side of the engine that was throwing the code or did you have to do both sides?

 

[RESURECTIONJK]

Ugh, great. Was the problem all on the side of the engine that was throwing the code or did you have to do both sides?

It was all on the driver side however, since they were tearing that far into it, I had them do cams, lifters and phasers on the passenger side too. I got bit hard so I’m hoping that yours isn’t as bad. But a proper diagnosis from a shop that understands these engines is in order.

 

[cozdude]

Read like it has a timing chain issue or the actuators are not adjusting like desired under different engine loads. You didn’t post how many mile you have but I’m assuming close to 100k which is when chains are usually due

 

[2013rubirick]

Mine did that and the timing chain jumped teeth all my cam phasers broke and had to have a full top end rebuild. It’s very common. Mine did it with only 48k miles.

 

[borow67]

Update.
I had 68K on the jeep when this started. The Jeep finally started bucking so towed it to a sho and they replaced the phasers and the timing chain on the drivers side. This seems to have fixed the error code...for a short time. When the snow finally melted down in the mountains to a passable hight I started up a trail and of course the error code P0349 Camshaft position sensor A circuit intermittent Bank 2 went on again! This is less than 3K miles after it was "fixed"
Took it back to the shop and they THINK it is because there were some filings on the magnet. I think this is BS since it's always the same sensor, never the passenger side. And the magnets for the phasers never get filings on them and neither does the oil pan plug.
I'm at a loss.

 

[2013rubirick]

I hate to break it to you but, I just went through this and this isn’t likely going to be cheap. It needs to go to a proper shop who is familiar with this stuff. Mine ended up being a stretched timing chain, broken guides and stripped intake cam gear, 3 burnt exhaust valves and a host of other issues. I got bit hard by the 3.6 demons. Hopefully yours isn’t as bad but, prepare yourself.

This is exactly what happened to my motor also with the same issues he’s having. Motor needs to be pulled apart sorry to say!!!

 

[WJCO]

Found this. Not sure if it will help.

 

[2013rubirick]

Update.
I had 68K on the jeep when this started. The Jeep finally started bucking so towed it to a sho and they replaced the phasers and the timing chain on the drivers side. This seems to have fixed the error code...for a short time. When the snow finally melted down in the mountains to a passable hight I started up a trail and of course the error code P0349 Camshaft position sensor A circuit intermittent Bank 2 went on again! This is less than 3K miles after it was "fixed"
Took it back to the shop and they THINK it is because there were some filings on the magnet. I think this is BS since it's always the same sensor, never the passenger side. And the magnets for the phasers never get filings on them and neither does the oil pan plug.
I'm at a loss.

Mine did this same thing also. I had all phasers replaced new chain. Pretty much everything new on the front of the motor. Lasted about 2k miles and had problems again. Found another chain guide broken and rocker arm broken. Happened to be at 50k miles.

 

[GP NOIR]

Update.
I had 68K on the jeep when this started. The Jeep finally started bucking so towed it to a sho and they replaced the phasers and the timing chain on the drivers side. This seems to have fixed the error code...for a short time. When the snow finally melted down in the mountains to a passable hight I started up a trail and of course the error code P0349 Camshaft position sensor A circuit intermittent Bank 2 went on again! This is less than 3K miles after it was "fixed"
Took it back to the shop and they THINK it is because there were some filings on the magnet. I think this is BS since it's always the same sensor, never the passenger side. And the magnets for the phasers never get filings on them and neither does the oil pan plug.
I'm at a loss.

The wire harness to the Bank 2 Cam Position Sensor is too short. The wires have to make a sharp bend coming off the sensor, stressing the wires and sensor.

The solution is a pigtail from Mopar that splices to and extends the harness. You can find them on Ebay. Install the pigtail and replace the sensor.