Testing intake air temperature sender — AUDI
Testing intake air temperature sender on Audi: factory workshop procedure for engines ABZ, AEW, AGA, AHC. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📐 18 workshop diagrams for ABZ
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
AJG ALF
Connect fault reader V.A.G 1551 (V.A.G 1552) and select engine electronics control unit with the "Address word" 01. When doing this the engine must be running at idling speed.
(Connecting fault reader and selecting engine electronics control unit => Page
01-3
.)
Rapid data transfer
HELP
Select function XX
Indicated on display:
Press keys 0 and 8 for the function "Read measured value block" and confirm entry with Q key.
Read measured value block
Enter display group number XXX
Indicated on display:
Press keys 0, 0 and 4 to select Display Group 4 and confirm entry with Q key.
Read measured value block 4
⇒
1
2
3
4
Indicated on display:
Check display value for intake air temperature sender (display zone 4).
Display zones
1 · 2 · 3 · 4
Display Group 4: Intake air temperature with engine idling
Display · xxxx rpm · xx.xxx V · xxx.x °C · xxx.x °C
Indicates · Engine speed · Battery voltage · Coolant temperature · Intake air temperature
Range · min.: 600 rpm / max.: 6920 rpm · min.:10.000 V / max.: 15.000 V · min.: -40.0 °C / max.: 125.0 °C · min.: -40.0 °C / max.: 125.0 °C
Specification · xxxx rpm · 12.000...15.000 V · 80.0...105.0 °C · Between ambient temperature and 90 °C
Note · If display shows implausible value or substitute value of 25.5 °C, / test wiring / => Page 28-16
Testing wiring
Fitting location of intake air temperature sender
=>Page
24-5
Switch off ignition.
Unplug connector from intake air temperature sender.
Connect hand-held multimeter V.A.G 1526 (resistance measurement range) between the two contacts on the sender.
Specifications: see graph
If the readout does not match the specification:
Fit a new intake air temperature sender.
If the readout matches the specification, test wiring between sender connector and engine control unit as follows:
Connect test box V.A.G 1598/22 to wiring harness for engine control unit =>Page
24-21
.
Test wiring between connector for intake air temperature sender...
... and engine control unit for open circuit and short circuit.
4-pin connector on wiring harness, contact · Socket on test box V.A.G 1598/22
1 · 54
2 · 67
Resistance in wiring: max. 1.5 ω
Rectify any open/short circuit as necessary.
If no faults have been found in any of the above tests, fit a new engine control unit =>Page
24-23
.
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
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- 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 →Workshop data on this page last updated 20 Sep 2026.