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Codes P0018 and P0019 after replacing the timing chain?

Tiny
SEBASTIANFROMNJ
  • MEMBER
  • 2009 AUDI Q5
  • 3.2L
  • V6
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Hi, I did a timing chain on an Audi 3.2. Did leak down test before reassembly and no leak down and lobes were pointed correctly, I also had timing kit installed to lock. The engine was out of time on the 2nd bank, one tooth. Rotated engine marks lined back up. Reinstalled engine. P0018 and p0019 come up. (These were the codes to begin with.) Verified it was out of time, engine is in time, verified with leak down test, going to compression test it tomorrow, but is there anything else that can cause this? I believe the VVT are new too, not sure if off brand though. Also, has a secondary air fault code.
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Wednesday, October 5th, 2022 AT 10:05 PM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,635 POSTS
The code P0018 stands for Crankshaft Position Camshaft Position Correlation (Bank 2, Sensor A). On these cars the sensor wrong can plug into different sensors, in other words you could have the sensor connections in the wrong placements. If there are any questions, try swapping the connectors. If that is okay, I would check or replace the camshaft oil control solenoid valve and re-check the timing marks. Here is how the job is done in the images below and the location of the valve as well. I would also remove the camshaft oil control valves and clean the screen because they can get clogged up and stop working. Also, make sure the engine is full of good clean oil, and a new filter. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.
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Thursday, October 6th, 2022 AT 10:36 AM
Tiny
SEBASTIANFROMNJ
  • MEMBER
  • 40 POSTS
So, all wires going to ECM are good, no resistance or short. 4.9v on cam reference. The signal line is 4.6v. Ground is good.
I tried swapping cam sensors from bank to bank, the 0018/19 became just a p0017, tried replacing the sensors I just swapped over that set a code on the side that was working but 0017 remains.
The timing code moved with the sensors, but the sensors did not fix the 0017. 0018/19 did not return. Very confusing.
Connectors all good. I’m thinking it is the computer. She runs with no misfire, as well, smooth.
If timing was at fault, the 0018/19 would still be present?
The p0017 is a hard hit first cycle like the sensor is damaged or missing.
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Tuesday, October 11th, 2022 AT 5:00 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,635 POSTS
Yep, that is strange the way the code changed I have to agree the computer could be bad. Here is how to change out the PCM in the images below.
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Wednesday, October 12th, 2022 AT 6:38 PM
Tiny
SEBASTIANFROMNJ
  • MEMBER
  • 40 POSTS
Actually fixed it. Turns out the sensor was bad. Connector made bad connection on new sensor. It was a little dirty. Just a coincidence, I think. So, the cam sensors did fix my problem, I think the new ones just didn’t connect correctly. Not really sure. But she’s ready to ship now, thanks for your help.
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Wednesday, October 12th, 2022 AT 7:12 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,635 POSTS
Nice! Glad we could fix it, you more than me of course but I will take credit for the assist. Thanks for getting back to me. Use 2CarPros anytime, we are here to help. Please tell a friend.
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Thursday, October 13th, 2022 AT 2:11 PM
Tiny
SEBASTIANFROMNJ
  • MEMBER
  • 40 POSTS
So, after driving it about 40 miles with multiple on off cycles and idle/cool down periods in between, the code randomly came back to 0017. Going to try investigating connector more.
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Friday, October 14th, 2022 AT 8:26 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,635 POSTS
Yep, it does sound like the wiring connector is bad.
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Saturday, October 15th, 2022 AT 12:19 PM

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