Testing intake air temperature sensor -G42: Audi 2.0 (ABK, ADW)
Step-by-step testing intake air temperature sensor -G42 for the Audi 2.0 (ABK/ADW): factory workshop text.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📐 16 workshop diagrams for ABK
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
ADW
Note:
Fitting location for the intake air sender: In air flow meter -G19.
Special tools, testers and auxiliary equipment required
Fault reader V.A.G 1551 (or vehicle system tester V.A.G 1552) with wire V.A.G 1551/1
Adapter set V.A.G 1594 A
Test box V.A.G 1598/18
Chilling spray (commercially available)
Connect fault reader V.A.G 1551 (V.A.G 1552) and select the engine electronics control unit using "Address word" 01. Engine must not be running.
(Connect fault reader and select engine electronics control unit => Page
01-2.)
Read measured value block 2
⇒ (1) (2) (3) (4)
Read measured value block, display group 002 => Page
01-62.
Lift the top part of the air filter and spray the intake air temperature sender -G42 with the refrigerant spray.
Test display in display zone 4.
Specification: The temperature value should drop
Note:
The illustration show the intake air temperature sender in the air flow meter when removed.
Press the ⇒key.
Rapid data transfer
HELP
Select function XX
Indicated on display:
Enter "06" for "End output" function and confirm entry with Q key.
Note:
If the intake air temperature sender is faulty, the Digifant control unit displays a particular substitute figure.
If there is no change to the readout in display zone 4:
With the ignition switched off, connect test box V.A.G 1598/18 to connector for engine control unit => Page
24-16.
Test for open circuit and short to earth/positive or earth in the following wiring connections:
Connector / of -G19 / Contact · Test box / V.A.G 1598/18 / Socket
1 · 37
4 · 35
Rectify any open/short circuit as necessary.
If the wiring and intake air temperature sender are OK, fit a new Digifant control unit => Page
24-18.
Notes:
After replacing the Digifant control unit , it is necessary to adapt the control unit and throttle valve potentiometer to each other =>Page
24-92.
After replacing the Digifant control unit on vehicles fitted with an automatic gearbox, it is necessary to adapt the automatic gearbox control unit and the throttle valve potentiometer to each other => Page
24-93.
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
Ask about my car →Other AUDI procedures
- Tightening torques
- Belt drive for alternator, coolant pump, and vane pump
- Removing and installing intake manifold -engine codes AAD, ABB-
- Removing and installing intake manifold -engine codes ABK, ADA, ADW-
- Checking output stage for ignition transformer
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix → · How these pages are made →Workshop data on this page last updated 20 Sep 2026.