01-18
 Diagnostic Trouble Code (DTC) table
 
Notes:  
 
The DTC table is organized according to SAE and VAG diagnostic trouble codes.
 The column labeled "MIL" specifies the MIL switching condition associated with that DTC.
 DTCs that do not switch on the MIL after the malfunction is recognized by the ECM are identified by the MIL switching 
condition "Off." 
 DTCs that do switch on the MIL immediately after the malfunction is recognized by the ECM are identified by the MIL 
switching condition "Immed." 
 DTCs that are recognized by the ECM and switch on the MIL after two consecutive driving cycles (Dcy) are identified by 
the MIL switching condition "2 Dcy." 
 Always correct malfunctions that are designated "immediately" as soon as possible, followed by those malfunctions that 
are designated "2 Dcy." 
 When all repairs have been completed, erase DTC memory (   page 01
-49
 ) and then generate new readiness code   
page 01
-73
 . 
 DTCs that are recognized as a result of intermittent malfunctions, or DTCs that are not erased after repairs, are classified 
as sporadic malfunctions. These are identified by the designation "SP" appearing in the display. 
 A sporadic malfunction will be erased if it no longer occurs after 50 driving cycles during which the engine reaching 
Pa
ge 24 of 97 On Board Dia
gnostic 
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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pair&id=AUDI.B5.FU03.01.1 
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     
Pa
ge 64 of 97 On Board Dia
gnostic 
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1