manual transmission AUDI A4 1996 B5 / 1.G AHA Engine On Board Diagnostic Workshop Manual
Page 15 of 97
01-10
 
4D0907551A 2.8L V6/5V MOTR HS D01 Coding 06051 
WSC 00000
    
Indicated on display (ECM identification and coding, example)  
4D0 _ _ 
_   Engine Control Module (ECM) Part No.  
2.8 L   Engine displacement  
V6/5V   Engine type:   
V-engine, 6-cylinder, 5-valve  
MOTR   Motronic  
HS  
AT  Manual transmission  
Automatic transmission  
D..   ECM software version  
Coding   ECM coding  
Coding variations   page 01
-14
   
WSC 
12345  Plant number: indicates where VAG1551 scan tool was used 
for last coding and/or adaptation (as long as factory coding 
has not been changed, WSC 00000 is displayed)  
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Page 20 of 97
01-14
 ECM coding variations
 
Country/Emissions  
Drivetrain/Options  
Transmission  
Vehicle type  
00 
=  ------------------   0 
=  Front-wheel-drive without 
traction control (ASR)  0 
=  5-speed manual   0 
=  ------------
------  
01 
=  ------------------   1 
=  Front-wheel-drive with traction 
control (ASR)  1 
=  ------------------   1 
=  A4  
02 
=  ------------------   2 
=  All-wheel-drive without traction 
control (ASR)  2 
=  ------------------   2 
=  ------------
------  
03 
=  ------------------   3 
=  All-wheel-drive with traction 
control (ASR)  3 
=  ------------------   3 
=  ------------
------  
04 
=  ------------------   4 
=  ------------------   4 
=  ------------------   4 
=  ------------
------  
05 
=  ------------------   5 
=  ------------------   5 
=  Automatic trans. 
01V  5 
=  ------------
------  
06 
=  USA, equipped with EVAP system Leak 
Detection Pump (LDP)  6 
=  ------------------   6 
=  ------------------   6 
=  ------------
------  
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Page 21 of 97
01-15
 
Code number structure (example)  
  
  
  
  
  
USA vehicle with Leak Detection Pump (LDP):   0   6           
Front-wheel-drive without traction control (ASR):         0        
Automatic transmission 01V:            5     
Audi A4:               1  
Code number:   0   6   0   5   1  Note:  
Vehicles with traction control (ASR) can be recognized by the ASR control light in the instrument cluster or by ABS/ASR On 
Board Diagnostic (OBD). 
 Repair Manual, Brake System, Repair Group 01  
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Page 64 of 97
01-47
 
Diagnostic Trouble 
Code (DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1602   18010   Power Supply (B+) Terminal 30  
Low Voltage  Off  
- Check voltage supply to ECM   page 24
-
90
 
P1606   18014   Rough Road Spec Engine Torque ABS-
ECU  
Electrical Malfunction  Off  
- Check ABS control module signal for 
rough road recognition   page 24
-174
 
P1612   18020   Electronic Control Module   
Incorrect Coding  
(Vehicle with automatic transmission is 
coded for manual transmission.)  Immed.  
- Code ECM   page 01
-12
      Electronic Control Module   
Incorrect Coding  
(Vehicle with ASR is not coded for ASR)  Off     
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Page 65 of 97
01-48
 
Diagnostic Trouble 
Code (DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1624   18032   MIL Request Sign. active   Immed.  
 Repair Manual, 5 Spd. Automatic Transmission 01V, 
Repair Group 01  - Check DTC memory for Transmission Control Module 
(TCM) and correct malfunctions 
P1626   18034   CAN-Bus  
Missing Message from 
Transm. Contr.  2 Dcy  
- Check CAN-Bus   page 24
-172
P1640   18048   Internal Contr. Module 
(EEPROM)   
Error  2 Dcy  
- Replace ECM   page 01
-68
P1681   18089   Contr. Unit Programming  
Programming not Finished  Immed.  
- Replace ECM   page 01
-68
P1690   18098   Malfunction Indicator Light  
Malfunction  Off  
- Check wire from ECM to Malfunction Indicator Light 
(MIL)  page 01
-2 
Note for DTC P1624/18032:  
If this malfunction is detected by the Transmission Control Module (TCM), the MIL is switched on by the ECM. In this case, 
the ECM stores the malfunction "MIL Request Sign. active" (DTC P1624/18032). After repairing the malfunction, erase DTC 
memory of the ECM. 
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