With Manufacturer's Scan Tool

Readiness Code For Engine Code AWP, Generating

Special tools and equipment
- V.A.G 1551 Scan Tool (or vehicle system tester V.A.G 1552) with cable V.A.G 1551/3

Check conditions







- All fuses must be OK.
- Vehicle stationary
- On vehicles with automatic transmission selector lever in "P" or "N" position
- The battery voltage must be at least 11.5 V.
- All electrical consumers, e.g. lights and rear window defogger must be switched off.
- Intake air temperature less than 80 degrees C, see display group 04, display zone 4
- Coolant temperature between 60 and 80 degrees C, see display group 04, display zone 3
- The catalyst temperature must be at least 350 degree , see Display group 34, display zone 2

Work sequence
- Connect V.A.G 1551 Scan Tool (V.A.G 1552). Switch ignition on and select engine control module with "Address word" 01. (Connecting Scan Tool and selecting engine control module. [1][2][3]Connecting VAG 1551 Scan Tool)

Work step 1: Check Diagnostic Trouble Code (DTC) memory

Indicated on display

Rapid data transfer HELP
Select function XX

- Press keys 0 and 2 for function "Check DTC memory" and confirm entry with Q key.

The number of DTCs stored or "No DTC recognized!" will be shown on the display.

X DTCs recognized!

If a DTC is stored:
- Repair DTCs printed out using DTC table.
- Press -> key.
- Continue with work step 3.

Work step 2: Erase DTC memory

Indicated on display

Rapid data transfer HELP
Select function XX

- Press keys 0 and 5 for function "Erase DTC memory" and confirm entry with Q key.

NOTE: If the ignition is switched off between "Check DTC memory" and "Erase DTC memory" the DTC memory will not be erased.

- Press -> key.

Indicated on display

Rapid data transfer
DTC memory is erased

Note: If the ignition is switched off between "Check DTC memory" and "Erase DTC memory" the DTC memory will not be erased.
- Press -> key.

Work step 3: Matching the throttle valve control module to the engine control module

Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys 0 and 4 for function "Introduction of basic setting" and confirm entry with Q key.

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 6 and 0 for "Display group number 60" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

System in basic setting 60 "
xxx % xxx % x ADP. runs

- Check specifications in display zones 3 and 4:
Display zone 3: 0...8
Display zone 4: ADP. runs, ADP. OK

Indicated on display: (1...4 = Display zones)

System in basic setting 60 "
xxx % xxx % 8 ADP. OK

- End engine basic setting at earliest after 30 seconds by pressing -> key.End engine basic setting at earliest after 30 seconds by pressing -> key.

If the display does not indicate as described:
- Check throttle valve control module.

If the display indicates as described:
- Start engine and run at idling speed.

NOTE: During the work sequence the engine must not be switched off.

Work step 4: Temperature check

Indicated on display

Rapid data transfer HELP
Select function XX

- Press keys 0 and 8 for function "Read measured value block" and confirm entry with Q key.

Indicated on display

Read measured value block
Input display group number XXX

- Press keys 0, 0 and 4 for "Display group number 4" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

Read measured value block 4
1 2 3 4

- Read coolant temperature value in display zone 3.
Specification: 60...80 degrees C

- Read intake air temperature value in display zone 4.
Specification: maximum 80 degrees C

If the specifications are not obtained:
- Press -> key.
- Press keys 0 and 6 for "End data transfer" function and confirm input with Q key.
- Switch ignition off and allow engine to cool down.
- Repeat readiness code.

If the display indicates as described:
- Press -> key.

Indicated on display

Rapid data transfer HELP
Select function XX

Work step 5: EVAP system diagnosis (tank venting system)

- Press keys 0 and 4 for "Introduce basic setting" function and confirm entry with Q key.

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 7 and 1 for "Display group number 71" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

Basic setting 71 "
1 2 3 4

- Allow engine to continue running at idling speed.

If the diagnosis is initiated from the engine control module the display in display zone 4 jumps from "Test OFF" to "Test ON"
- Continue to run engine at idling speed until specification "Syst. OK" is displayed in display zone 4.

NOTE: If the display in display zone 4 jumps from "Test ON" to "Test OFF" during the diagnosis and "Abort" is displayed in display zone 2, repeat the Leak diagnosis. When repeating the diagnosis it can take up to approx. 60 seconds before the display in display zone 4 jumps from "Test OFF" to "Test ON".

- Press C key.

Work step 6: Diagnosis of oxygen sensor status

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 3 and 0 for the "Display group number 30" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

Basic setting 30
1 2 3 4

- Allow engine to continue running at idling speed.
- Check operating condition of oxygen sensor control before catalyst (display zone 1):
Specification: x11

- Check operating condition of oxygen sensor control after catalyst (display zone 2):
Specification: xxx

NOTE: The bits in display zone 2 will not be set to 1 until the catalyst temperature rises above 350 degrees C (See Display group 34, display zone 2).

Significance of 3 digit number block in display zones 1 and 2:







If the specifications are not obtained:
- Press -> key.
- Check DTC memory.

If the specifications are obtained:
- Press C key.

Work step 7: Diagnosis tank venting system

Test conditions
- Coolant temperature must be at least 60 degrees C, see display group 04, display zone 3.

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 7 and 0 for "Display group number 70" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

System in basic setting 70
1 2 3 4

When the diagnosis is initiated by the engine control module the display in display zone 4 jumps from "Test OFF" to "Test ON"
- Run engine at idling speed until specification "EVAP OK" is displayed in display zone 4.

If the display does not indicate as described:
- Press -> key.
- Check DTC memory.

If the display indicates as described:
- Press C key.

Work step 8: Oxygen sensor aging diagnosis before catalyst (cycle duration monitor)

Indicated on display:

Basic setting
Input display group number XXX

- Press keys 0, 3 and 4 for "Display group number 34" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

System in basic setting 34
1 2 3 4

- Depress brake pedal and hold.
- Press accelerator pedal to wide open throttle position.

Engine speed is increased by the control module to 1800 to 2200 rpm.
- Maintain engine speed at 1800 to 2200 rpm until display in display zone 4 jumps from "Test OFF" to "Test ON". Catalyst temperature in display zone 2 must be between 350 and 500 degrees C.
- Check cycle duration in display zone 3:
Specification: maximum 2.5 s

- Continue to maintain speed at 1800 to 2200 rpm until specification "B1-S1 OK" appears in display zone 4.

If the display does not indicate as described:
- Release accelerator pedal and brake pedal.
- Press -> key.
- Check DTC memory.

If the display indicates as described:
- Release accelerator pedal and brake pedal.
- Press C key.

Work step 9: Secondary air system diagnosis

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 7 and 7 for "Display group number 77" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

System in basic setting 77
1 2 3 4

- Allow engine to continue running at idling speed.

If the diagnosis is initiated from the engine control module the display in display zone 4 jumps from "Test OFF" to "Test ON"
- Continue to run engine at idling speed until specification "Syst. OK" appears in display zone 4.

If the display does not indicate as described:
- Press -> key.
- Check DTC memory.

If the display indicates as described:
- Press C key.

Work step 10: Oxygen sensor control system diagnosis

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 3 and 7 for "Display group number 37" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

Read measured value block 37
1 2 3 4

- Depress brake pedal and hold.
- Press accelerator pedal to wide open throttle position.

The engine speed is increased by the control module to 1800 to 2200rpm.

If the diagnosis is initiated from engine the control module the display in display zone 4 jumps from "Test OFF" to "Test ON"
- Continue to maintain the speed at 1800 to 2200 rpm until specification "Syst. OK" appears in display zone 4.

If the display does not indicate as described:
- Release accelerator pedal and brake pedal.
- Press -> key.
- Check DTC memory.

If the display indicates as described:
- Release accelerator pedal and brake pedal.
- Press C key.

Work step 11: Diagnosis of oxygen sensor aging after catalyst

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 4 and 3 for "Display group number 43" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

System in basic setting 43
1 2 3 4

- Depress brake pedal and hold.
- Press accelerator pedal to wide open throttle position.

Engine speed is increased by the control module to 1800 to 2200 rpm
- Maintain engine speed at 1800 to 2200 rpm until display in display zone 4 jumps from "Test OFF" to "Test ON". Catalyst temperature in display zone 2 must be min. 300 degrees C.
- Continue to maintain speed at 1800 to 2200 rpm until specification "B1-S2 OK" appears in display zone 4.

If the display does not indicate as described:
- Release accelerator pedal and brake pedal.
- Press -> key.
- Check DTC memory.

If the display indicates as described:
- Release accelerator pedal and brake pedal.
- Press C key.

Work step 12: Diagnosis of oxygen sensor operational readiness after catalyst

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 3 and 6 for "Display group number 36" and confirm entry with Q key. 2 3 4

Indicated on display: (1...4 = Display zones)

System in basic setting 36
1 2 3 4

- Depress brake pedal and hold.
- Press accelerator pedal to wide open throttle position.

Engine speed is increased by the control module to 1800 to 2200 rpm.

If the diagnosis is initiated from the engine control module the display in display zone 2 jumps from "Test OFF" to "Test ON"
- Continue to maintain speed at 1800 to 2200 rpm until specification "B1-S2 OK" appears in display zone 2.

If the display does not indicate as described:
- Release accelerator pedal and brake pedal.
- Press -> key.
- Check DTC memory.

If the display indicates as described:
- Release accelerator pedal and brake pedal.
- Press C key.

Work step 13: Catalyst diagnosis

NOTE: The diagnosis will only be ended if the oxygen sensor aging diagnosis is successfully completed first.

Indicated on display

Basic setting
Input display group number XXX

- Press keys 0, 4 and 6 for "Display group number 46" and confirm entry with Q key.

Indicated on display: (1...4 = Display zones)

System in basic setting 46
1 2 3 4

- Depress brake pedal and hold.
- Press accelerator pedal to wide open throttle position.

Engine speed is increased by the control module to 1800 to 2200 rpm.

- Maintain engine speed at 1800 to 2200 rpm until display in display zone 4 jumps from "Test OFF" to "Test ON". Catalyst temperature in display zone 2 must be at least 440 degrees C.
- Continue to maintain engine speed at 1800 to 2200 rpm until Specification "CatB1 OK" appears in display zone 4.

If the display does not indicate as described:
- Release accelerator pedal and brake pedal.
- Press -> key.
- Check DTC memory.

If the display indicates as described:
- Release accelerator pedal and brake pedal.
- Press -> key.

Work step 14: Read out readiness code
- Read readiness code. Readiness Code Reading

Generating readiness code for engine code AWP, work steps 1 to 5







Generating readiness code for engine code AWP, work steps 6 to 10







Generating readiness code for engine code AWP, work steps 11 to 14 3 Display