(Solved) OPCOM Error: no communication with the ECM

Outils de diagnostic de voitures

Problem and customer solution of Opcom firmware 1.95 communication error

There is no communication with the ECM

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Interface communication error, or interface not powered from car

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Timeout occurred for Read Fault Codes Information!

Possible reasons are:

Ignition switched OFF

Communication error with the ECU

ECU is busy, or rejects request

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U2201-00 CAN-Bus No Communication with EHU (Entertainment Head Unit)

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Opcom interface: vaux-com 120309

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Reply: Hi you have to verify your ground and 12 volts in your obd2 connector on the car .

Pin 4 5 ground and 16 +12 . Then you’ll have Opcom working like a charm

Hope it could help you.

(Credits to Dyno Thomas)