fuel pressure AUDI A4 1997 B5 / 1.G AEB Engine OBD and DTC
[x] Cancel search | Manufacturer: AUDI, Model Year: 1997, Model line: A4, Model: AUDI A4 1997 B5 / 1.GPages: 57, PDF Size: 0.2 MB
Page 38 of 57

01-25
 
Diagnostic Trouble 
Code (DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1127   17535   Long Term Fuel Trim 
mult., Bank1   
System too Rich
 1)
  2 
Dcy  - Check Mass Air Flow (MAF) sensor -G70-   Page 24
-57
           
- Check HO2S -G39- and O2S control   Page 24
-17
           
- Check Oxygen Sensor (O2S) behind Three Way Catalytic 
Converter (TWC) -G130-   Page 24
-35
 
           
- Check fuel pressure regulator and residual fuel pressure   
Page 24
-93
 
           
- Check fuel injectors   Page 24
-87
- Output Diagnostic Test Mode (DTM)   Page 01
-42
1) The term "mult." = multiplicative; applies to entire engine speed (RPM) and load range.   
Pa
ge 38 of 57 On Board Dia
gnostic 
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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yp
e=re
pair&id=AUDI.B5.FU02.01.1 
Page 39 of 57

01-26
 
Diagnostic Trouble 
Code (DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1128   17536   Long Term Fuel Trim 
mult., Bank1   
System too Lean
 1)
  2 
Dcy  - Check HO2S -G39- and O2S control   Page 24
-17
           
- Check Oxygen Sensor (O2S) behind Three Way Catalytic 
Converter (TWC) -G130-   Page 24
-35
 
           
- Check fuel pressure regulator and residual fuel pressure   
Page 24
-93
 
           
- Check fuel injectors   Page 24
-87
- Output Diagnostic Test Mode (DTM)   Page 01
-42
           
- Check EVAP canister purge regulator valve   output 
Diagnostic Test Mode (DTM), page   Page 01
-42
 
1) The term "mult." = multiplicative; applies to entire engine speed (RPM) and load range.   
Pa
ge 39 of 57 On Board Dia
gnostic 
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.01.1 
Page 40 of 57

01-27
 
Diagnostic Trouble Code 
(DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1136   17544   Long Term Fuel Trim Add. 
Fuel, Bank1   
System too Lean
 2)
  2 
Dcy  - Check intake air system for leaks ("false air")   
Page 24
-97
 
           
- Check HO2S -G39- and O2S control   Page 24
-17
           
- Check Mass Air Flow (MAF) sensor -G70-   Page 
24
-57
 
           
- Check fuel pressure regulator and residual fuel 
pressure  Page 24
-93
 
           
- Check fuel injectors   Page 24
-87
- Output Diagnostic Test Mode (DTM)   Page 01
-42
2) The term "Add." = additive; applies only with engine running at idle speed.   
Pa
ge 40 of 57 On Board Dia
gnostic 
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.01.1 
Page 41 of 57

01-28
 
Diagnostic Trouble 
Code (DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1137   17545   Long Term Fuel Trim Add. 
Fuel, Bank1   
System too Rich
 2)
  2 Dcy  
- Check HO2S -G39- and O2S control   Page 24
-17
           
- Check fuel pressure regulator and residual pressure   
Page 24
-93
 
           
 Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine 
Mechanical, Engine Code(s): AEB, ATW, Repair Group 26.
    - Check exhaust system for leakage:
P1171   17579   Throttle Actuation 
Potentiometer Signal 2  
Range/Performance
 1)
  Immed.  
- Check throttle actuation potentiometer   Page 24
-
107
 . 
1) With this malfunction the exhaust Malfunction Indicator Light (MIL) is switched on by the ECM, immediately after the 
malfunction has been recognized. Significance of MIL   Page 01
-2 .  
2) The term "Add." = additive; applies only with engine running at idle speed.  
Pa
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Page 46 of 57

01-31
 
Diagnostic Trouble 
Code (DTC)  
Malfunction text  
MIL  
Corrective action  
SAE  
VAG  
  
  
  
P1250   17658   Fuel Level   
Too Low  Off  
- Fuel volume less than 2 gallons, add fuel.
           
 Electrical Wiring Diagrams, Troubleshooting & Component 
Locations    - Check wiring between ECM and instrument cluster
           
 Repair Manual, Electrical Equipment, Repair Group 01
    - Check signal from fuel gauge, and fuel gauge
P1297   17705   Connection charger-
throttle valvle  
Pressure drop    
 Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, 
Engine Code(s): AWM, Repair Group 21; Charge Pressure, Leak test with VAG 1687
    - Check air pressure system using VAG 1687 charge air system 
tester 
Note on misfire malfunctions:  
For malfunctions that may be caused by low fuel volume (i.e. combustion misfire) a low-fuel malfunction (DTC "P1250") is also 
stored when there is less than 2 gallons of fuel remaining in the tank. 
Pa
ge 46 of 57 On Board Dia
gnostic 
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.01.1