Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2012A4 SEDAN (8K2) L4-2.0L TURBO (CAEB)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULELOCATIONS
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)
Engine Control Module: Locations
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)SECTION Locations
Control modules in front part of vehicle
Engine Control Module (ECM) -J623-
Component Location Engine Control Module (ECM) -J623- for models with left-hand drive:
In Electronics Box (in plenum chamber, driver's side)
Note:
• Illustration shows models with left-hand drive.
• Illustration for models with right-hand drive .
A - Engine Control Module (ECM) -J623-
B - 94-Pin Connector, on wiring harness -T94-
C - 60-Pin Connector, on wiring harness -T60-
Component Location Engine Control Module (ECM) -J623- for models with
right-hand drive:
In Electronics Box (in plenum chamber, driver's side)
Note:
• Illustration shows models with right-hand drive.
• Illustration for models with left-hand drive => [ ] Locations.
A - Engine Control Module (ECM) -J623-
B - 94-Pin Connector -T94-
C - 60-Pin Connector -T60-
Component Location Engine Control Module (ECM) -J623- for models with
left-hand drive (with -T91- and -T105- ):
In Electronics Box (in plenum chamber, driver's side)
Note:
• Illustration shows models with left-hand drive.
• Illustration for models with right-hand drive .
A - Engine Control Module (ECM) -J623-
B - 91-Pin Connector -T91-
C - 105-Pin Connector -T105-
Component Location Engine Control Module (ECM) -J623- for models with
right-hand drive (with -T91- and -T105- ):
In Electronics Box (in plenum chamber, driver's side)
Note:
• Illustration shows models with right-hand drive.
• Illustration for models with left-hand drive .
A - Engine Control Module (ECM) -J623-
B - 91-Pin Connector -T91-
C - 105-Pin Connector -T105-
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.