Question about 2002 Audi A6

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18043 P1635 Data Bus Powertrain missing message f.air condition control can any body help me with this code on my audi a6

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Posted on Apr 22, 2014


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017

  • 2035 Answers

SOURCE: Audi A6 air conditioner problems

This is the problem with ac unit belt must be struck or the it may clogged get it checked or the Ac is weak get it service ........................

Posted on Jun 04, 2008

  • 319 Answers

SOURCE: HELP, MISFIRING: 1999 Audi A6 Quattro Avant Wagon

P1127 Long Term Fuel Trim mult.,Bank1 System too Rich

P1129 Long Term Fuel Trim mult.,Bank2 System too Rich

P1250 Fuel Level Too Low

P1300 Misfire detected Reason: Fuel level too low

P0154 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)

P0300 Random/Multiple Cylinder Misfire Detected

P0303 Cylinder 3 Misfire Detected

P0304 Cylinder 4 Misfire Detected

It sounds like there is a lot going on.

Good Luck


Posted on Sep 14, 2008

  • 18 Answers


I just posted a solution for this problem. It comes straight from the radio manual. The dealer should have told you this. If you want him to do it he'll charge money for his time. IF YOU LOST YOUR CODE. THE DEALER CAN HELP YOU OR IF YOU HAVE YOUR 4 DIGIT CODE: dd43c71.jpg

Posted on Dec 13, 2008

  • 11 Answers


try another dealer. maybe try to get ahold of one of the techs at lunch time. this info should be free to the car owner, just be ready to supply the title to the car for some proof. maybe try buying the parts guys lunch or coffee and donuts....this usually works for this type of problem. unfortunaley this info really is dealer only..

Posted on Aug 11, 2009

  • 366 Answers

SOURCE: My 2005 Audi A6 3.0 TDI just keeps blowing hot air

I would first try getting the a/c system recharged. It can be a number of things, but having the system pressure checked is the first thing to check.

Posted on Nov 07, 2009

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My 2001 Pontiac Aztec is showing code u1096 can anyone tell me what this means

SCP Invalid or Missing Data for Primary Id

Faulty / intermittent ignition switch connections J1850 / SCP Bus wiring intermittently open, shorted to power or ground Faulty / intermittent connection at the Powertrain Control Module (PCM) Faulty / intermittent connection at the Body Control Module (BCM) Faulty / intermittent connection at the Instrument Panel Cluster (IPC)

Feb 15, 2018 | Pontiac Cars & Trucks

1 Answer

Mini cooper s obd codes 1627 whot to do?

Definition of check engine code P1627:
Module Supply Voltage Out Of Range
Module Supply Voltage Out Of Range
A/D Performance
PCM A/D Conversion Malfunction
Module supply voltage out of range
Powertrain Control Module (ECM/TCS) Line Communication Error
PCM (ECM/TCS) line communication error
PCM/EC A/D Fault
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Data - Bus Powertrain missing message from fuel injection pump
Data - Bus Powertrain missing message from fuel injection pump

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C0899 U1026 U1064 P0300 P0506 P0446

Best Manuals I don't know abut your model but i'm sure this lady here can help you

Oct 26, 2017 | Cars & Trucks

1 Answer

What's he drive train cycle for 2003 audi a6

Throttle Body Alignment (TBA) - Ross-Tech Wiki
This procedure cycles the motorized throttle body through various states (idle, part ... The TBA can be performed on both Drive-By-Wire (DBW or E-gas) as well as ... Typically, '96-'99 VW/Audi have motorized Cable-throttle, and '00+ VW/Audi ... 5 and 95C; If fault codes were cleared cycle the ignition off and back on prior to ...Missing: press ‎train ‎clear

How to Perform a Basic Drive Cycle - RepairPal > Car Care Advice > How To's
The Drive Cycle is one of the methods used by the powertrain control module ... ADrive Cycle is a special test drive that duplicates the scenario of a person ... This signals that an emission system problem and fault code has been ... If the fuel tank is near empty or completely full, many of the basic tests will not run at all.

Anyone have a drive cycle on how to drive the car after fixing one

Dec 02, 2015 | Audi Cars & Trucks

1 Answer


HVAC Compressor Controls Circuit Description
The operation of the A/C compressor clutch is controlled by the body control module (BCM) and powertrain control module (PCM). The BCM receives an a/c request signal from the heater a/c control assembly through circuit 66. The BCM then sends a class 2 serial data message to the PCM through circuit 1807. Power for the a/c compressor clutch relay is supplied by the A/C BFC fuse and circuit 439. When the PCM receives an a/c request message from the BCM, the PCM grounds circuit 459 allowing the a/c compressor clutch relay to engage. Ground for the a/c compressor clutch is supplied through circuit 450.
Do you know what a class 2 serial data message is ?
Class 2 data is a high speed data transmission. In order to control serial data line traffic, class 2 uses the peer to peer method along with message arbitration in order to manage the data line traffic. The class 2 data line includes the following control modules:
The body control module (BCM)

The electronic brake control module (EBCM)

The powertrain control module (PCM)

The sensing and diagnostic module (SDM)

You need a factory scan tool to diagnosis , it's the only way to see if transmission is sent an received !
The intake air temperature (IAT) sensor is a thermistor which measures the temperature of the air entering the engine. The Powertrain Control Module (PCM) applies 5.0 volts through a pull up resistor. When the intake air is cold, the sensor resistance is high and the PCM will monitor a high signal voltage on the IAT sensor signal circuit. As the intake air warm, the sensor resistance becomes lower causing the PCM to monitor a lower voltage. If the PCM detects an excessively high IAT sensor signal voltage (low temperature indicated), DTC P0113 will set.
Test the signal circuit of the IAT sensor for a short to voltage. Refer to Wiring Repairs in Wiring Systems.

Do you ko

Sep 08, 2015 | 2000 Chevrolet Malibu

1 Answer

1999. What are the probable causes of DTC P1624?

Definition of Diagnostic Trouble Code P1623 Audi: Data Bus Powertrain No Communication BMW: Pedal Position Sensor Potentiometer Supply Buick: Transmission Temp Pull-Up Resistor Cadillac: Transmission Temp Pull-Up Resistor Chevrolet: Transmission Temp Pull-Up Resistor Chrysler: ASD Relay/Control De-Energize Too Soon Dodge: ASD Relay/Control De-Energize Too Soon Ford: Code word/id number-write/read error GMC: Transmission Temp Pull-Up Resistor Hyundai: Diagnostic Lamp Powerstage Malfunction Jeep: ASD Relay/Control De-Energize Too Soon Land Rover: Immobilisation ECU code storage fault.Last occurrence - signal fault Lincoln: Code word/id number-write/read error Mazda: Immobilizer Code Word/ID Number Write Failure Mercury: Code word/id number-write/read error Oldsmobile: Transmission Temp Pull-Up Resistor Pontiac: Transmission Temp Pull-Up Resistor Saturn: Transmission Temp Pull-Up Resistor Volkswagen: Data Bus Powertrain No Communication Volvo: ETS .amp / MIL on

Jun 27, 2015 | Hyundai Elantra Cars & Trucks

1 Answer

I have an Audi a6 2.7Quattro.I have codes..1131 and 1626 can't figure what to fix

P1131 Bank2-Sensor1 Internal Rsistance too High
P1626 Data-Bus Powertrain Missing Message from Transm.Contr.
Think one of your O2 sensors isnt connected or the wires are damaged in some way

Oct 21, 2014 | 2001 Audi A6

1 Answer

2003 Audi A6 gives the code P3041. What's wrong with my car?

EOBD type: P3041 = VAG type 5-digit: 19497
Fault location: CAN data bus, instrumentation - implausible ECT (Engine Coolant Temperature sensor) signal
Probable cause: Wiring, matching resistor in ECM (Engine Control Module)

Sep 03, 2010 | 2003 Audi A6

1 Answer

Auto scanner code 1698

The P1698 code means that no digital data is being received by the powertrain controller from the transmission control module, located on the right inner fender. The manual says to check the CCD bus wires between the module and the rest of the system using the Chrysler diagnostic readout box. But if you don't have one then I think you can do the same thing by measuring for continuity (near 0 resistance) between pin 4 of its plug and pin 11 of the data link plug under the dash or pin 59 of the powertrain controller plug.
Then check the resistance between pin 43 if its plug and pin 3 of the data link connector or pin 60 of the powertrain controller plug. The powertrain controller is on the opposite side of the engine compartment on the left inner fender. These module plugs are held in place by a bolt. If the continuity between the transmission and the powertrain CCD wires checks to be ok, then according to the manual the trans controller should be replaced.
That is my analysis of what you report. You may have been told to replace the body control module erroneously because the code for that is P1695. If the independent garage was using the check engine light as its diagnostic methodology those problems both give a code 66, so they may guessed that it was the body module as being the faulty one. Problems with starting and with gauges are often related to this data bus communication system so all your issues seem to point this way. You might also, when checking the wires, also verify that they are not shorted to ground.

Jun 01, 2009 | 1998 Chrysler Cirrus

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