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Check engine lights and multiple codes?

Tiny
KINGJD123
  • MEMBER
  • 2010 AUDI Q5
  • 3.2L
  • V6
  • 4WD
  • AUTOMATIC
  • 125,000 MILES
So, I brought this project car and I replaced the motor because the previous one seized. I did the first start today and I got these engine codes:
P0036
P0019
P0018
P0036
P0304
P0306
P0305

I'm not worried about the 02 sensors codes but I am the misfires and camshaft. Now the camshaft sensors are both replaced and I also replaced the crank, so I'm thinking it could be wiring are those all on the same wiring diagram? I'm wondering if the injectors and harness is connected but prior to putting the wiring harness on I did check for any apparent shorts. I could have missed it, the misfires I think could be just new spark plugs and coils im not as worried about them I just ordered some online and will have them next week. The ones I need help with is the camshaft and crankshaft? Also my secondary air or EGR whatever Audi calls it isn't hooked up its blowing because my hoses were brittle and snapped I also ordered those. Could it all just be related? I'm not familiar with Audi. When I start it you can hear it missing.
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Saturday, June 10th, 2023 AT 3:04 PM

16 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,940 POSTS
The misfire is not good, I would replace the spark plugs and coil like you said. Also, I would clear the codes and then without cranking the engine over run the codes again to see which one comes up first. These will be the codes we should repair first.

P0036 - O2 Sensor Heater Control Circuit Bank 1 Sensor 2: This code indicates a malfunction in the heater circuit of the oxygen sensor located downstream (after the catalytic converter) on Bank 1.

P0019 - Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor "B": This code points to a correlation problem between the crankshaft position sensor and the camshaft position sensor on Bank 2, specifically for Sensor "B".

P0018 - Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor "A": Similar to the P0019 code, this one indicates a correlation issue between the crankshaft position sensor and the camshaft position sensor on Bank 2, specifically for Sensor "A".

P0304, P0306, P0305 - Cylinder Misfire Detected: These codes indicate misfires in cylinders 4, 6, and 5, respectively. Cylinder misfires can occur due to various reasons, such as ignition system problems, fuel delivery issues, vacuum leaks, or mechanical problems.

Here is the location of the crankshaft sensor so you can check it out. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Sunday, June 11th, 2023 AT 1:11 PM
Tiny
KINGJD123
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  • 99 POSTS
Okay. So, I cleared codes and p0018 and 19 came up I replaced the 2 camshaft sensors and crankshaft I am currently getting the same codes. What next?
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Sunday, June 11th, 2023 AT 5:37 PM
Tiny
KINGJD123
  • MEMBER
  • 99 POSTS
Also isn't it weird that 4, 6, 5, are all on the same cylinder could that entire harness not be grounded?
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Sunday, June 11th, 2023 AT 5:39 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,940 POSTS
Yes, that is possible, I would double check the main engine wiring harness ground. Also, the codes are for the crankshaft and camshaft correlation which can mean the timing chain is off or the oil control valves for the camshaft activation are not working or clogged with gunk. Check out the images (below). Please let us know what you find.
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Monday, June 12th, 2023 AT 9:35 AM
Tiny
KINGJD123
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  • 99 POSTS
Where is the ground located?
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Monday, June 12th, 2023 AT 2:38 PM
Tiny
KINGJD123
  • MEMBER
  • 99 POSTS
Also can the p0018 and p0019 set off the misfires?
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Monday, June 12th, 2023 AT 2:39 PM
Tiny
KEN L
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Yes, it can, they don't show us where the grounds are so you will need to inspect the harness. I would remove the oil control valve for inspection. Please let me know.
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Tuesday, June 13th, 2023 AT 6:14 PM
Tiny
KINGJD123
  • MEMBER
  • 99 POSTS
Cleaned it and it is still not working. Do you have instructions on timing?
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Tuesday, June 20th, 2023 AT 3:32 PM
Tiny
KEN L
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Yep, here are the timing chain component marks. Check out the images (below). Please let us know how it goes.
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Wednesday, June 21st, 2023 AT 9:47 AM
Tiny
KINGJD123
  • MEMBER
  • 99 POSTS
Update: I pulled the engine, took the faceplate off and found the timing guide broke because it fell. How likely is it the valves are bent? And is there a way to check for bent valves without pulling the head?
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Friday, June 30th, 2023 AT 6:06 PM
Tiny
KEN L
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Good find, to check the to see if the valve are bent you need to do a leak down test, please follow this guide to help:

https://www.2carpros.com/articles/how-to-perform-an-automotive-engine-leak-down-test-a-step-by-step-guide

Please go over this guide and get back to us.

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Saturday, July 1st, 2023 AT 11:44 AM
Tiny
KINGJD123
  • MEMBER
  • 99 POSTS
Is there any way to check for bent valves with the engine out of the vehicle and no way to turn the engine over.
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Saturday, July 1st, 2023 AT 11:47 AM
Tiny
KEN L
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The only way is to remove the camshafts and fill the ports with water to see if the level goes down.
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Monday, July 3rd, 2023 AT 11:07 AM
Tiny
KINGJD123
  • MEMBER
  • 99 POSTS
Finally got all the tools. Can you send me the full instructions to do a timing change?
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Tuesday, July 11th, 2023 AT 9:23 PM
Tiny
KINGJD123
  • MEMBER
  • 99 POSTS
My chain is completely off on the left bank. How do I manually move the camshafts?
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Tuesday, July 11th, 2023 AT 9:23 PM
Tiny
KEN L
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Sure, can you please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

Cheers, Ken
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Thursday, July 13th, 2023 AT 9:31 AM

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