NefMoto > Technical > Diagnostics > 16490 - Manifold / Barometric Pressure Sensor (G71) / (F96)
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Author Topic: 16490 - Manifold / Barometric Pressure Sensor (G71) / (F96)  (Read 21512 times)
4biddna4
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« on: September 18, 2013, 11:03:27 AM »
VCDS Version: Release 11.11.6

                Address 01: Engine       Labels: 078-907-551-AZA.lbl
I have a 02 b6 a4 which I swapped an APB 2.7t with a AWE/GIAC stg 3 ecu into. I have all supporting mods and it came from my b5s4 which was in perfect running order with zero issues or codes. I re-pinned everything to work with the B6 body harness and started the car. Everything worked as it should the first two days then all of a sudden while the car was idling it began to sputter and shut off. Now it will only run if I disconnect the Hitachi MAF and Bosch MAP sensor. I have replaced both with new units and the problem still occurs. When I vag the car the below code shows up and if I try to erase, it returns immediately. Anyone have an idea of what could be causing this. I have checked the wiring over and over and everything appears to be o.k. I am running out of ideas and I do not want to drive the car in LIMP mode. There are no boost or vacuum leaks as I've used a boost leak tester to verify.




Control Module Part Number: 8D0 907 551 M
  Component and/or Version: 2.7l V6/5VT     G01 0002
           Software Coding: 06711
            Work Shop Code: WSC 01551 
                      VCID: 346A0DA204CEE2B8F43
Fault Codes have been Erased

1 Fault Found:
16490 - Manifold / Barometric Pressure Sensor (G71) / (F96)
            P0106 - 35-00 - Implausible Signal

Readiness: 0110 0101
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IamwhoIam
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« Reply #1 on: September 18, 2013, 04:34:50 PM »
Sounds like you need to change the ECU or get it fixed.
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I have no logs because I have a boost gauge (makes things easier)
ddillenger
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« Reply #2 on: September 18, 2013, 04:36:59 PM »
Barometric sensor is inside ecu champ Smiley

I may be able to repair it  Embarrassed
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!

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4biddna4
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« Reply #3 on: September 18, 2013, 10:09:18 PM »
Quote from: IamwhoIam on September 18, 2013, 04:34:50 PM
Sounds like you need to change the ECU or get it fixed.

Ok I failed to mention this happned to both the mbox stg 3 ecu and the spare stock mbox ecu I have.
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4biddna4
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« Reply #4 on: September 18, 2013, 10:13:18 PM »
Quote from: ddillenger on September 18, 2013, 04:36:59 PM
Barometric sensor is inside ecu champ Smiley

I may be able to repair it  Embarrassed

If you can repair this that would be great....care to pm or email me and discuss further details? Also how does this happen? What causes the barometric sensor to fail inside the ecu?
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ddillenger
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« Reply #5 on: September 18, 2013, 10:27:48 PM »
Who knows WHY it failed, I've never seen it happen before. all I know is I can replace it, and I have a pile of dead ecu's I can harvest parts from.

Worst case, your dead ecu is dead-er.

Email me, my address is in my sig.
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!

Email/Google chat:
DDillenger84(at)gmail(dot)com

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4biddna4
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« Reply #6 on: September 19, 2013, 07:30:50 AM »
Quote from: ddillenger on September 18, 2013, 10:27:48 PM
Who knows WHY it failed, I've never seen it happen before. all I know is I can replace it, and I have a pile of dead ecu's I can harvest parts from.

Worst case, your dead ecu is dead-er.

Email me, my address is in my sig.

Email sent.
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4biddna4
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« Reply #7 on: October 01, 2013, 11:54:19 AM »
So after investigating sensor by sensor with a volt meter, I discovered it was a bad camshaft position sensor shorting to plus which caused a drop in voltage across the ecu terminal (2.5v) thus creating the implausible signal by the barometric pressure sensor. Replaced it and problem solved. Smiley
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aef
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« Reply #8 on: February 13, 2014, 12:50:55 PM »
Hi,

My mate has this error in a purchased tuned S4 ecu.
Does anybody know if this is maybe softwarerelated?
Where is the Sensor on the 551C ECU Board?

Thx
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