P000A Camshaft Position Slow Response Bank 1

[Chadnutz]

Anyone got this code. I have noticed random hesitation under medium highway load lately. In fact there is one part of the drive where I'm starting to head up a hill that it seems to hit more often than not. One day last week it finally threw the code in the title. I cleared it and it hasn't come back, but I still feel the hesitation. When it happens it seems down on power, but not terribly. I've read it could be a loose oil gallery bolt behind the cam phaser or a bad solenoid. Any ideas?

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[Hootbro]

You might have a cam phaser that has slipped ever so slightly off position on the cam shaft. I think there is a index dowel pin the phaser aligns with the cam shaft when installed. If that has sheared or shifted, the phaser and the associated alignment with the cam will throw the code.

Quite frankly you are going to need a dealer tech monkey that actually understands timing and cam phaser relationship and running a o-scope to figure it out correctly.

 

[Chadnutz]

You might have a cam phaser that has slipped ever so slightly off position on the cam shaft. I think there is a index dowel pin the phaser aligns with the cam shaft when installed. If that has sheared or shifted, the phaser and the associated alignment with the cam will throw the code.

Quite frankly you are going to need a dealer tech monkey that actually understands timing and cam phaser relationship and running a o-scope to figure it out correctly.

Took it to the dealer last week. They updated to the next calibration version and drove it three times to see if it would throw the code. It didn't so they had me pick it up. Service ticket was exremely lacking in detail. I questioned how it could be fixed if it ran fine for 50k miles and then this started up. They said they followed the diagnostic tree. I immediately knew it wasn't fixed because it had a slight shake at idle. When I got on the highway it was confirmed. On one slight grade it shuttered and I had my foot on the floor to go 60 mph. I called them and said it was not right and that I'd bring it back in and we would drive together. I was taking kids to jiu jitsu and one hill there always has it fall on its face. Sure as shit, as soon as I hit that hill it dinged and the CEL came on. Now I don't have to waste my time driving around trying to prove to them that something is wrong. Dropping it off again today.

 

[Hootbro]

That sucks to hear. They will probably shotgun parts on whatever the troubleshooting tree says rather than truly diagnose based on the symptoms and understanding of timing data.

 

[Chadnutz]

Dealer replaced bank 1 intake cam phaser solenoid. CEL came on the next day. Power got progressively worse. It's back at the dealer for the 3rd time. I told them I read about a loose oil gallery bolt behind the cam phasers that was a common problem. Not sure what the progress is right now.

 

[Chadnutz]

Got a call. They "cleaned" the cam phasers and want me to drive it to see if the code comes back.

 

[jwolfejt]

3rd time - you can lemon the vehicle out i am pretty sure. You do realize this right ?

 

[@californiajeeping]

Dealer replaced bank 1 intake cam phaser solenoid. CEL came on the next day. Power got progressively worse. It's back at the dealer for the 3rd time. I told them I read about a loose oil gallery bolt behind the cam phasers that was a common problem. Not sure what the progress is right now.

Most likely you have lifter/follower/cam issues like the other thread with hundreds of people.
I had a 2020 sport s with the tick multiple misfire and lacking power that dealers were unable to resolve.

 

[Chadnutz]

They had it for two weeks this time. They found a leaking variable valve timing solenoid and replaced it. When I got it back I knew it was still messed up because it had a slight shake at idle and was still down on power. Second day rolling into the Jeeps least favorite hill it threw the CEL with the same code. Sigh. Going to have to escalate my response to them.

 

[ShadowsPapa]

They found a leaking variable valve timing solenoid and replaced it.

I'm curious about that because the solenoids handle valve lift. The solenoids have oil pressure, o-rings, and can leak.
The phasers control cam timing - and are torque operated...............
So either they used the wrong terms, wrote it down wrong, or something.
When these detect an intake not in low lift mode like the others, the PCM pushes all intakes to high lift mode, if that didn't happen, or could not happen for some reason the result - rough idle.

 

[Chadnutz]

So far they have replaced a cam phaser actuator PN 5047788AD and a solenoid-variable valve lift PN 5047897AC.

I wouldn't call it rough idle. A normal person may not even notice it. It is about the slightest shudder someone could notice. It does not show up in the tach. I can just feel it. Being down on power is the bigger issue. I have to hit 4th or 5th and have it on the floor to get up small hills.

 

[Chadnutz]

So you are on to something. Unless the VVT solenoid was bleeding off too much oil pressure, it wouldn't be responsible for the cam shaft not following its desired position. Jeep threw the CEL on its favorite hill. Same issue. Dad and I logged it with a scan tool and bank 1 intake cam is not following desired under high load. All other cams are. I took it back to the dealer for the 5th time I believe and told them they should have changed the cam phaser while they were under the valve cover. The say they have opened a "star case" on it. What's more annoying is that they have no loaners. I'll keep y'all posted.

 

[Chadnutz]

I think it's about time to try a different dealer. The service writer just called me to tell me they were going to replace the variable valve timing solenoid. I told him he already replaced it and asked for the part number because he often gets his part names wrong. He calls back with the part number and it's for the cam phaser solenoid. I told him he had already replaced THAT. He questioned me and I told him to look up his records. After he verified that, he said he would talk to the technician. I asked him if it was the same technician as before and he said no. Then I asked him to brief the current technician on what's been done so we can stop wasting time. Ridiculous.

 

[skindata]

With the amount of time they’ve had your truck and the amount of times fixing the same issue, it sounds like you would be better off trying to lemon this vehicle and look into getting a new one.

 

[ShadowsPapa]

I think it's about time to try a different dealer. The service writer just called me to tell me they were going to replace the variable valve timing solenoid. I told him he already replaced it and asked for the part number because he often gets his part names wrong. He calls back with the part number and it's for the cam phaser solenoid. I told him he had already replaced THAT. He questioned me and I told him to look up his records. After he verified that, he said he would talk to the technician. I asked him if it was the same technician as before and he said no. Then I asked him to brief the current technician on what's been done so we can stop wasting time. Ridiculous.

Sounds like they mess up part names or aren't sure what each function has.
Phaser isn't a solenoid, it's a torque driven method of handling cam timing.
The solenoids control oil flow to the VVL - variable valve lift rockers through the lash adjusters. Maybe they need to make sure yours has the correct lash adjusters. Some of the 2020s were not correct.

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