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Thread: Tech Tip - 2006 Audi A3 - BPY, ECM faults - Solved

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    Tech Tip - 2006 Audi A3 - BPY, ECM faults - Solved

    Hello,

    Here is a recent repair of my wife's Audi A3, see fault codes and repair solution below:
    (Maybe helpful to other's in the future)

    Vehicle:
    Vehicle Identification No: WAUMF78P86A065608
    Model: Audi A3 Sportback 2,0 FSI
    Date of production: 16.09.2005
    Year: 2006
    Sales type: 8PA52X
    Engine Code: BPY
    Transmission Code: HUT
    Axle drive: 6A

    Concern:
    Vehicle started fine, drove about 1000 feet, stopped at a stop sign, attempted to accelerate and vehicle started to loose power and stumble.
    Check engine light was flashing and then vehicle was able to pick up speed and drive for about 1 mile. Upon deceleration, vehicle stalled, would not restart.
    This is the 2nd time this happened. See fault codes below.

    - Note: Both the [167](J757)'191-906-383-C' and the [458](J271)'1K0-906-381' relays were replaced (Genuine Audi parts) as a prior repair attempt.

    Fault codes:
    Code:
    Address 01: Engine        Labels:. 06F-907-115-AXX.clb
       Part No SW: 8P0 907 115 B    HW: 8P0 907 115 B
       Component: 2.0l R4/4V TFSI     0080  
       Revision: --H10---    Serial number: AUX7Z0E8FN6015
       Coding: 0103010A1C070160
       Shop #: WSC 66565 257 00032
       VCID: 313C1FACFD2E023FCD6-8064
    
    9 Faults Found:
    008825 - Leak in Air Intake System 
                   P2279 - 002 -  - Intermittent
                 Freeze Frame:
                        Fault Status: 00110010
                        Fault Priority: 0
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 301130 km
                        Time Indication: 0
                        Date: 2018.03.13
                        Time: 02:25:19
    
                 Freeze Frame:
                        RPM: 773 /min
                        Load: 11.4 %
                        Speed: 0.0 km/h
                        Temperature: 93.0C
                        Temperature: 38.0C
                        Absolute Pres.: 980.0 mbar
                        Voltage: 13.970 V
    
    008583 - Bank 1; System too Lean at Idle 
                   P2187 - 004 -  - Intermittent
                 Freeze Frame:
                        Fault Status: 00110100
                        Fault Priority: 0
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 301130 km
                        Time Indication: 0
                        Date: 2018.03.13
                        Time: 02:25:58
    
                 Freeze Frame:
                        RPM: 846 /min
                        Load: 14.1 %
                        Speed: 0.0 km/h
                        Temperature: 92.0C
                        Temperature: 16.0C
                        Absolute Pres.: 960.0 mbar
                        Voltage: 14.478 V
    
    005634 - Power Supply Terminal 30 
                   P1602 - 002 - Voltage too Low - Intermittent
                 Freeze Frame:
                        Fault Status: 00100010
                        Fault Priority: 0
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 0 km
                        Time Indication: 0
    
                 Freeze Frame:
                        RPM: 0 /min
                        Load: 0.0 %
                        Speed: 0.0 km/h
                        Temperature: -40.0C
                        Temperature: -40.0C
                        Absolute Pres.: 0.0 mbar
                        Voltage: 0.000 V
    
    005635 - Internal Control Module 
                   P1603 - 004 - Failed Self-Test - Intermittent
                 Freeze Frame:
                        Fault Status: 00100100
                        Fault Priority: 0
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 0 km
                        Time Indication: 0
    
                 Freeze Frame:
                        RPM: 0 /min
                        Load: 0.0 %
                        Speed: 0.0 km/h
                        Temperature: 91.0C
                        Temperature: 23.0C
                        Absolute Pres.: 980.0 mbar
                        Voltage: 12.446 V
    
    005425 - Camshaft Timing Adjustment 
                   P1531 - 004 - Open Circuit - Intermittent - MIL ON
                 Freeze Frame:
                        Fault Status: 10100100
                        Fault Priority: 0
                        Fault Frequency: 7
                        Reset counter: 255
                        Mileage: 302425 km
                        Time Indication: 0
                        Date: 2018.05.06
                        Time: 20:56:21
    
                 Freeze Frame:
                        RPM: 1058 /min
                        Load: 14.1 %
                        Speed: 0.0 km/h
                        Temperature: 91.0C
                        Temperature: 22.0C
                        Absolute Pres.: 980.0 mbar
                        Voltage: 11.049 V
    
    000051 - Turbocharger Bypass Valve Control Circuit 
                   P0033 - 004 - Malfunction / Open Circuit - Intermittent
                 Freeze Frame:
                        Fault Status: 00100100
                        Fault Priority: 0
                        Fault Frequency: 7
                        Reset counter: 255
                        Mileage: 302425 km
                        Time Indication: 0
                        Date: 2018.05.06
                        Time: 20:56:21
    
                 Freeze Frame:
                        RPM: 1058 /min
                        Load: 14.1 %
                        Speed: 0.0 km/h
                        Temperature: 91.0C
                        Temperature: 22.0C
                        Absolute Pres.: 980.0 mbar
                        Voltage: 12.065 V
    
    000579 - Solenoid Valve  for Boost Pressure Control (N75) 
                   P0243 - 004 - Malfunction - Intermittent - MIL ON
                 Freeze Frame:
                        Fault Status: 10100100
                        Fault Priority: 0
                        Fault Frequency: 8
                        Reset counter: 255
                        Mileage: 302425 km
                        Time Indication: 0
                        Date: 2018.05.06
                        Time: 20:56:21
    
                 Freeze Frame:
                        RPM: 1058 /min
                        Load: 14.1 %
                        Speed: 0.0 km/h
                        Temperature: 91.0C
                        Temperature: 22.0C
                        Absolute Pres.: 980.0 mbar
                        Voltage: 12.065 V
    
    008851 - Fuel Pressure Regulator Valve (N276) 
                   P2293 - 001 - Mechanical Malfunction
                 Freeze Frame:
                        Fault Status: 01100001
                        Fault Priority: 0
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 302425 km
                        Time Indication: 0
                        Date: 2018.05.06
                        Time: 20:56:47
    
                 Freeze Frame:
                        RPM: 1213 /min
                        Load: 21.6 %
                        Speed: 4.0 km/h
                        Temperature: 92.0C
                        Temperature: 23.0C
                        Absolute Pres.: 980.0 mbar
                        Voltage: 14.097 V
    
    008518 - Supply Voltage for Fuel Injector Group A 
                   P2146 - 002 - Open Circuit
                 Freeze Frame:
                        Fault Status: 01100010
                        Fault Priority: 0
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 302425 km
                        Time Indication: 0
                        Date: 2018.05.06
                        Time: 20:56:53
    
                 Freeze Frame:
                        RPM: 1524 /min
                        Load: 19.6 %
                        Speed: 0.0 km/h
                        Temperature: 92.0C
                        Temperature: 23.0C
                        Absolute Pres.: 980.0 mbar
                        Voltage: 11.430 V
    
    Readiness: 0110 0101
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans        Labels: 02E-927-770.clb
       Part No SW: 02E 300 042 Q    HW: 02E 927 770 AE
       Component: GSG DSG         070 0926  
       Revision: 04507000    Serial number: 00000508130136
       Coding: 0000020
       Shop #: WSC 06314 000 00000
       VCID: 211CEFECADCEB2BF5D6-8074
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 1K0-614-517-MK60AT.clb
       Part No SW: 1K0 614 517 R    HW: 1K0 614 517 R
       Component: ESP FRONT MK60-AT   0103  
       Revision: 00T12001    
       Coding: 0053890
       Shop #: WSC 06314 000 00000
       VCID: 36362CB014402507984-8062
    
    1 Fault Found:
    01314 - Engine Control Module 
                013 - Check DTC Memory - Intermittent
    
    -------------------------------------------------------------------------------


    The Fix (solution):

    Using VCDS, fault codes where checked, noticed the Freeze Frame Voltage, as low as [0.00v].
    - Next used VCDS to monitor the ECM voltage in Measuring Value Block group [004], field (2)-Supply Voltage, found voltage was [0.00v]
    - Wiggle tested the [458](J271) relay in the engine compartment fuse box (see pic) and saw the voltage went back to battery voltage.
    - - Replaced the relay/fuse box [1K0-937-124-K], verified repair, three days and 50+ miles - so far so good

    Note: It appeared the terminal(s) were loose and the current load was not able to be supported, nothing burned or discolored was found, see photos.

    Conclusion:
    - Even though this seems like it was quick and easy repair and I was able to go directly to the source of the concern, this was all made possible due to the ability to read between the lines and knowing how the system works (wiring diagrams). Given the information within the fault codes and freeze frame data, this led me to check the Measuring Value Blocks and a 'wiggle test, as this was all pointing to a voltage concern.

    - So I recommend to take the few moments and look at all the information, it could save you a lot of time and money, glad I did not replace the ECM...
    [P1603 - Internal Control Module: Failed Self-Test]


    Photos:

    Fuse Box (This is a 'High' fuse box)



    Inside the fuse box (pin removed):


    Under side of fuse box, cover removed:


    Vehicle side, fuse box removed:



    Hope this helps,

    drpeter
    Last edited by DrPeter; 05-21-2018 at 01:49 PM.

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