1999 AUDI A8 ECO mode

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Page 10 of 97

AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual 01-7
 Modes under address word 33:  Mode 1: Transfer diagnostic data   Ignition switched on -or- Engine running at idle  
Mode 2: Transfer operating conditions   Ignition switched on -or- Engine runni

Page 11 of 97

AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual  With Mode 7 all malfunctions can be checked, even if they have not switched on the Malfunction Indicator Lamp (MIL) (if 
the MIL has not been switched on, there is no malfunction recognized under Mod

Page 14 of 97

AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual 01-9
      
Connecting  
    
Notes: 
 Scan tool operating instructions    -  Locate Data Link Connector (DLC), under drivers knee bar to left of 
steering wheel. 
-  Connect VAG1551 Scan Tool (ST) w

Page 56 of 97

AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual 01-42
 
Diagnostic Trouble 
Code (DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1391   17799   Camshaft Pos. 
Sensor, Bank2  
Short to Ground  2 Dcy  
- Check Camshaft Posi

Page 58 of 97

AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual 01-43
 
Diagnostic Trouble 
Code (DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1432   17840   Sec. Air Inj. Valve  
Open  2 
Dcy  - Check Secondary Air Injection (AIR) sys

Page 69 of 97

AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual 01-51
      
Output Diagnostic Test Mode (DTM) 
(scan tool function 03)
 
     
Notes:  
     
The output Diagnostic Test Mode (DTM) can be 
activated only with ignition switched on and the 
engine no

Page 75 of 97

AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual 01-55
      
EVAP canister purge regulator valve -N80-: 
     
- 
Press  button.Output Diagnostic Test Mode EVAP Canister Pur
ge Re
gulator Valve-N80
    
Indicated on display  
The valve will click u

Page 76 of 97

AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual 01-56
      
Secondary Air Injection (AIR) pump relay -
J299-: 
     
- 
Press  button.Output Diagnostic Test Mode Secondary Air Injection Relay-J299
    
Indicated on display  
The relay will be actu
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