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 MANUALSAUDI2012A8 QUATTRO SEDAN (4H2) V8-4.2L (CDRA)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULELOCATIONSENGINE CONTROL MODULE (ECM) -J623
2012 Audi A8 Quattro Sedan (4H2) V8-4.2L (CDRA)
Engine Control Module (ECM) -J623
2012 Audi A8 Quattro Sedan (4H2) V8-4.2L (CDRA)SECTION Engine Control Module (ECM) -J623
Control modules in front part of vehicle
Engine Control Module (ECM) -J623-
Component Location:
In center engine compartment -1-.
Engine Control Module (ECM) -J623- with 154-pin, Pin Connector
A - Engine Control Module (ECM) -J623-
1 - 60-Pin Connector -T60- , black
2 - 94-Pin Connector -T94- , black
Engine Control Module (ECM) -J623- with 196-pin, Pin Connector
A - Engine Control Module (ECM) -J623-
1 - 105-Pin Connector -T105- , black
2 - 91-Pin Connector -T91- , black
Only engine codes CDTA, CDTB, CDRA, CDSB (from November
2011), CMHA, CEUA, CGTA, CLAB
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.