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Michael Roberts

ECM Code P243200

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VIN: WAUCKAFR6AA020894
Production Month / Vehicle Year: September / 2010
Make: Audi
Model: A5 Quattro Coupe (8T3)
Engine: V6-3.2L (CALA)
Transmission: Automatic 6-Speed 0B6
Mileage: 73368
Affected System: Engine / Powertrain Engine Mechanical / Internal
Description of Issue: Unknown
Scan Tool: Autel
Diagnostics / Tests Performed:

Customer reported CEL on without symptoms

Found the following code(s)....

 

01 - Engine Control Module 1
P243200: Secondary Air Injection System Air Flow/Pressure Bank 1 Sensor Circuit Low Active/static

08 - Air Conditioning
01274 Air Flow Flap Motor -V71--Lower limit not reached Passive/Sporadic

19 - Gateway
03041 Energy management active-tbd Active/static

56 - Radio
02635 Tuner not enabled/activated-tbd Active/static

 

Visual inspection of engine and it is clean. I am assuming we will need to run the smoke machine, but
wanted to see if anyone has come across this on the CALA engine?
 

KOEO code still wont clear....

Pressure sensor is for both banks and the vacuum lines running to the combi valve are good

Possibly the Combi valve?
 

thanks

 

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Michael,

Working on this brother.  U have my hands full today, as a revamping the AEuromotive Homepage, Installing a VMWare version of Mercedes ETM 2017
on the InfoServer, so you guys have a latest version (ETM Wiring Diagrams, Component Locations, Connectors, and Electronic Diagnostic EBOB.

 

I have the Audi Engine up in front of me, but if this damn phone would just quit ringing..............:wacko::52_fearful:

Peter is at the Doctor, having PT done on his shoulder.  He should be back home shortly.

 

Sorry man, TOO much to do at once.  Wish I was 30 and had 8 arms.  I'd be OK with that.

Stand by!

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Smoke the vacuum system for any leaks

Manually apply vacuum AIR Combination Valves
     Valves should hold vacuum
     Valves should open with vacuum applied
   
Manually energize 2nd AIR Pump Motor (V101)  check for...

  •     Leaks around the body of the air pump
  •     Strong pressure output of the pump
  •     Check Lines between V101 & combination valves for cracking

Check for Ground activation from DME to the AIR Pump Relay J299 & AIR Sol Valve N112 when the (DTM) basic setting for AIR system is run

 

 

TWO - TSB's for you see them below

 

91 10 61 (10-12-2010) SAT radio has prematurely deactivated
26 11 08 (12-20-2011) DTC P0491 & P0492) both at the same time


 

91 10 61 (10-12-2010) SAT radio has prematurely deactivated (1) .jpg

91 10 61 (10-12-2010) SAT radio has prematurely deactivated (2).jpg

26 11 08 (12-20-2011) DTC P0491 & P0492) both at the same time (1) .jpg

26 11 08 (12-20-2011) DTC P0491 & P0492) both at the same time (2) .jpg

26 11 08 (12-20-2011) DTC P0491 & P0492) both at the same time (3) .jpg

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The smoke machine had no leaks and both combi valves are functioning.
Will advise the pump first, but I don't understand how we get a hard code without starting the

vehicle unless the pump is not coming on instantly.

Still doesn't explain on bank 1 for Codes....

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54 minutes ago, Michael Roberts said:

The smoke machine had no leaks and both combi valves are functioning.
Will advise the pump first, but I don't understand how we get a hard code without starting the vehicle unless the pump is not coming on instantly.

Still doesn't explain on bank 1 for codes....

 

Sound like weak/failing SAI PUMP.

 

BMW does this on V engines too.  The "bank-1" is indicating the prerequisite criteria fault .   
The system self-test failed before it could even run full checks. 

 

Example: Seen this for high-pressure fuel pump /pressure sensor faults.   "BANK 1, fuel pressure requested
too low"  the fault was on bank-2 .....basically  bank one test runs criteria check FIRST if there is a problem
soo big on the other side of the {shared} system it stops running self test and triggers the bank-1 fault first. 
Kinda dumb? yeah,  but that's the way they do it.   why?  because they are German. And they are always right. 

 

or as Angelo might say "Der deutsche Weg ist der richtige Weg"        

 

EDIT:  additionally,  it might benefit you to recommended the new pump AND both combi valves at first shot. 
Call it "fatigued components" or some such.  But there is in all likely hood that they are part of the problem too. 
And they may come back to haunt you.   

SELL it ALL the FIRST time, eh.  

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6 minutes ago, Michael Roberts said:

SAI pump? Air Pump?

 

"01 - Engine Control Module 1
P243200: Secondary Air Injection System Air Flow/Pressure Bank 1 Sensor Circuit Low Active/static"

 

 

That IS the fault we are dealing with, is it not?

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Yes...just dont know what "SAI" is for...I agree it needs an air pump most likely

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31 minutes ago, Michael Roberts said:

Yes...just dont know what "SAI" is for...I agree it needs an air pump most likely


Jeez, Mike
 

Its an acronym, S.A.I. Secondary  Air Injection  

 

???

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We did go into Basic Settings to turn the pump on and it says it "Exited for reasons of Safety".

Both the old and new pumps give us this....no blown fuses

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On 7/13/2018 at 5:09 PM, Michael Roberts said:

We did go into Basic Settings to turn the pump on and it says it "Exited for reasons of Safety".

Both the old and new pumps give us this....no blown fuses

 

Assuming that the code is still set then.      

 

The TSB that peter posted says "....apply vacuum to both Combi valves and run basic setting adaptation again....".      You did this? 

 

There may be issue with the SAI pressure sensor itself.   is it giving you any measure value PID?   

Can you isolate the pump circuit momentarily and watch the pressure sensor input value for change?

With and without the Combi valves closed (vacuum applied)? 

 

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We replace the pressure sensor 06L 906 052 and it is FIXED.

 

Matt we did what you were talking about...what stumps me is why it is only reporting one bank and not both...

As always thanks for the info....

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Mike,

Any chance that you have a picture of this sensor location??

A picture would set this POST up there for all to see.

Thanks!

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The pressure sensor is mounted on top of the air pump pipe (under the throttle body assembly)
that splits to both Combi valves.

Almost resembles a map sensor and probably operates on a similar principle.

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Thanks for that description Michael, it helps to define

where it is located.

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