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After replacing sensor pigtails on the CAM sensor and high-pressure fuel rail sensor, all of the sensors are coding?

Tiny
JAZZY JEFF
  • MEMBER
  • 2008 AUDI A4
  • 2.0L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 212,000 MILES
Replaced pigtails on the cam sensor and high-pressure fuel rail sensor and now all the sensors are coding. Did I cross a wire by accident?
Wednesday, August 17th, 2022 AT 1:22 AM

3 Replies

Tiny
BORIS K
  • MECHANIC
  • 800 POSTS
Hello,

Both of these sensors share a 5V supply and ground.
It is important to get the pin location correct.
Please see image below regarding the wiring colors and pins

Hope this helps.

Cheers, Boris
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Wednesday, August 17th, 2022 AT 3:32 AM
Tiny
JAZZY JEFF
  • MEMBER
  • 2 POSTS
Replaced wiring to diagram specs and erased codes and still codes keep coming back.
P3193, p0343, p0113, p0118, p2539, p0180, p1098.
Did some reading and saw a few other stories like mine but no solutions.
Before this had a code 2177 lean code.
Thinking fuel injector wiring harness might have a short, don't know what to do. Need help please.
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Friday, August 19th, 2022 AT 12:29 PM
Tiny
BORIS K
  • MECHANIC
  • 800 POSTS
Hello,

Which diagnostic tool are you using?
I would suggest using Ross-Tech VCDS,
https://www.ross-tech.com/vag-com/

Regarding your initial code, P2177.
This code can have various causes, low fuel pressure, blocked injectors, intake air leak, faulty crank case ventilation system.
http://wiki.ross-tech.com/wiki/index.php/18609/P2177/008567
A good video:
https://youtu.be/bA73ZWmw4k0

I believe P3193 and P1098 are related.
http://wiki.ross-tech.com/wiki/index.php/19649/P3193/012691#Possible_Causes
http://wiki.ross-tech.com/wiki/index.php/17506/P1098/004248

I think you will need to carry out the basic setting procedure first.
http://wiki.ross-tech.com/wiki/index.php/2.0l_TFSI_(AXX/BGB/BPJ/BPY/BWA)#Intake_Manifold_Runner

P0343.
http://wiki.ross-tech.com/wiki/index.php/16727/P0343/000835

P0113.
http://wiki.ross-tech.com/wiki/index.php/16497/P0113/000275

P0118.
http://wiki.ross-tech.com/wiki/index.php/16502/P0118/000280

P0180.
http://wiki.ross-tech.com/wiki/index.php/16564/P0180

There is a wealth of information on the Ross-Tech wiki site.

Hope this helps.

Cheers, Boris
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Monday, August 22nd, 2022 AT 7:53 AM

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