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Self-diagnosis IV > < Self-diagnosis III

Octavia Mk1

Fault table, fault codes 17769...18262
   
Fault table, fault codes 17769...18262
Readout on -V.A.G 1552- Rectifying fault
17769
Ignition control cyl. 3		Open circuit
–  Check ignition coil with power amplifier → Current flow diagrams and Fitting locations
17770
Ignition control cyl. 3		Short circuit to positive
17771
Ignition control cyl. 3		Short circuit to earth
17772
Ignition control cyl. 4		Open circuit
17773
Ignition control cyl. 4		Short circuit to positive
17774
Ignition control cyl. 4		Short circuit to earth
17794
17795
17796
control unit defective		 
–  Replace engine control unit → Chapter 24-4
17818
Tank ventilation valve -N80-		Short circuit to positive
–  Test valve -N80 - → Chap. 01-1, final control diagnosis
17829
Secondary air injection valve
-N112-		Short circuit to earth
–  Test secondary air inlet valve -N112- → Chap. 01-1, final control diagnosis
17830
Secondary air injection valve
-N112-		Short circuit to positive
17832
Bank 1, secondary air system		Leak detected
–  Test hose lines and components of the secondary air system → 1.8 l/132 kW Engine, Mechanical Components; Rep. Gr.26
17833
Tank ventilation valve -N80-		Short circuit to earth
–  Test valve -N80- → Chap. 01-1, final control diagnosis
17834
Tank ventilation valve -N80-		Open circuit
17840
Secondary air injection valve
-N112-		Open circuit
–  Test valve -N112- → Chap. 01-1, final control diagnosis
17841
Secondary air pump relay -J299-		Open circuit
–  Test relay -J299- → Chap. 01-1, final control diagnosis
17842
Secondary air pump relay -J299-		Short circuit to positive
17843
Secondary air pump relay -J299-		Short circuit to earth
17908
Fuel pump relay -J17-		Electrical fault in the circuit
–  Test fuel pump relay -J17- → Current flow diagrams and Fitting locations
17909
Fuel pump relay -J17-		Short circuit to earth
17910
Fuel pump relay -J17-		Short circuit to positive
17927
Bench1, camshaft adjustment		Malfunction
–  Test solenoid valve for camshaft adjustment → Chap. 01-1, final control diagnosis
17931
Crash signal from airbag CU		Implausible signal
–  Test airbag → Body Fitting Work; Rep. Gr.01
17937
Camshaft adjustment		Short circuit to positive
–  Test solenoid valve for camshaft adjustment → Chap. 01-1, final control diagnosis
17938
Camshaft adjustment		Short circuit to earth
17939
Camshaft adjustment		Open circuit
17947
Clutch pedal switch -F36-		Implausible signal
–  Check clutch pedal switch -F36- in measured value block, display group 066
17950
Angle sender for TV drive -G187-		Implausible signal
–  Check throttle valve control unit in measured value block, display group 060
–  Test throttle valve control unit -J338- → Chap. 24-2
17951
Angle sender for TV drive -G187-		Signal too low
17952
Angle sender for TV drive -G187-		Signal too high
17953
Throttle valve control		Malfunction
–  Check throttle valve control unit in measured value block, display group 060
–  Test throttle valve control unit - J338- → Chap. 24-2
 
 
17954
Solenoid valve for charge pressure control -N75-		Short circuit to positive
–  Test valve -N75- → Chap. 01-1, final control diagnosis
–  Check charge pressure control → 1.8 l/132 kW Engine, Mechanical Components; Rep. Gr.21
17955
Solenoid valve for charge pressure control -N75-		Short circuit to earth
17956
Solenoid valve for charge pressure control -N75-		Open circuit
17958
Charge pressure		Control difference
17963
maximum charge pressure exceeded		 
17964
Charge pressure control		Regulating limit not reached
17965
Charge pressure control		Regulating limit exceeded
17966
Throttle valve drive -G186-		Electrical fault in the circuit
–  Test throttle valve control unit → Chapter 24-2
17967
Throttle valve control unit -J338-		Incorrect basic setting
–  Adapt engine control unit to throttle valve control unit → Chapter 24-4
17968
Maximum engine speed exceeded		 
–  Inspect engine for mechanical damage and erase fault memory → Chapter 01-1
–  Test resistance of engine speed sender → Chap. 24-1
17972
Throttle valve control unit J338		Undervoltage on basic setting
–  Check battery voltage if necessary recharge
–  Adapt engine control unit to throttle valve control unit → Chapter 24-4
17973
Throttle valve control unit -J338-		Bottom limit not reached
–  Check throttle valve for damage and dirt
17976
Throttle valve control unit -J338-		Mechanical fault
–  Test throttle valve control unit → Chapter 24-2
–  Check throttle valve for damage and dirt
17977
CCS switch -E45-		Implausible signal
–  Check cruise control system (CCS) in measured value block, display group 066
17978
Engine control unit inhibited		 
–  Adapt engine electronics control unit to electronic immobiliser → Electrical System; Rep. Gr.96
–  Test electronic immobiliser → Electrical System; Rep. Gr.96
 
17987
Throttle valve control unit -J338-		Adaption not started
–  Adapt engine control unit to throttle valve control unit → Chapter 24-4
–  Test throttle valve control unit → Chapter 24-2
18010
Voltage supply tml. 30		Voltage too low
–  Inspect engine control unit power supply → Chapter 24-2
–  Perform procedure for voltage interruption → Chap. 24-2
18011
18012
Control unit defective		 
–  Replace engine control unit → Chapter 24-4
18017
Crash disconnect activated		 
–  Interrogate and erase fault memory for airbag control unit
→ Body Work; Rep.-Gr. 01
18018
Control unit defective		 
–  Replace engine control unit → Chapter 24-4
18020
Engine control unit		Incorrectly coded
–  Code engine control unit → Chapter 24-4
18038
Sender for accelerator pedal position -G79-		Signal too low
–  Check accelerator pedal position sender in measured value block, display group 062 → Chap. 01-7
–  Test accelerator pedal position sender → Chapter 24-2
18039
Sender for accelerator pedal position -G79-		Signal too high
18041
Sender 2 for accelerator pedal position -G185-		Signal too low
18042
Sender 2 for accelerator pedal position -G185-		Signal too high
18047
Sender 1/2 for accelerator pedal position -G79- + -G185-		Implausible signal
18048
Control unit defective		 
–  Replace engine control unit → Chapter 24-4
18056
Databus drive		defective
–  Inspect databus → Chapter 24-5
18057
Databus drive		Missing message from ABS CU
–  Read out fault memories of all control units (automatic test sequence) → Chapter 01-1
–  Test ABS control unit → Running Gear; Rep. Gr.45
18058
Databus drive		Missing message from combiinstrument
–  Inspect databus → Chapter 24-5
–  Test dash panel insert → Electrical System; Rep. Gr.90
18085
Fault lamp for electr. accelerator control -K132-		Short circuit to positive
–  Test fault lamp for electr. accelerator control → Chap. 24-2
18090
Databus drive		Missing message from ABS CU
–  Inspect databus → Chapter 24-5
18261
Databus drive		implausible message from ABS CU
–  Test ABS control unit → Running Gear; Rep. Gr.45
18262
Databus drive		defective
–  Inspect databus → Chapter 24-5

  Note
When attempting to start with a non-adapted key a static fault is stored in the memory. If the engine is subsequently started with an adpated key, the fault is converted to a sporadic fault.
   

Self-diagnosis IV > < Self-diagnosis III