Audi A4: Engine Control Module
Overview - Engine Control Module

1 - Bolt
2 - Mount
- For the Engine Control Module -J623-
3 - Engine Control Module -J623-
- Before replacing perform the "01 - mechanical engine, functions"
listed adaptation using the Vehicle Diagnostic Tester.
- Removing and installing. Refer to
→ Chapter "Engine Control Module -J623-, Removing and Installing".
4 - Bolt
5 - Suspension Strut Tower
Engine Control Module -J623-, Removing and Installing
Removing
Note
If the engine control module is replaced, perform the Guided
Functions "01 - Control module, replacing" using the Vehicle
Diagnostic Tester.
- Open the retainers in the direction of
-arrows- and remove the Engine Control Module -J623--2-.
- Disconnect the connectors -1-.

Installing
Install in reverse order of removal and note the following:
- If the Engine Control Module -J623- is replaced, perform the
"01 - mechanical engine, functions" listed adaptation using the
Vehicle Diagnostic Tester.
Special Tools
Special tools and workshop equipment required
- Engine Bung Set -VAS6122-

READ NEXT:
Exhaust Pipes/Mufflers
Overview - Muffler
Overview - Muffler, FWD Vehicle
1 - Retaining Loop
Replace if damaged
Exhaust system, installing without tension. Refer to
→ Chapter "Exh
Vehicles with a High-Voltage System (Hybrid Vehicles)
Working on Vehicles with High-Voltage System (Hybrid Vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-volta
SEE MORE:
Note
The Passenger Side Front Airbag Crash Sensor -G284- is removed
and installed the same way.
Removing
WARNING
Risk of injury due to involuntary deployment.
Pay attention to the safety precautions when working
with pyrotechnic components. Refer to
→ Chapter "Safety Precau
Safety precautions
WARNING
As the driver, you are always completely responsible
for all driving tasks. The assist
systems cannot replace the driver's attention.
Give your full attention to driving the
vehicle, and be ready to intervene in the
traffic situation at all times.
Activate the assi