(Solved) OPCOM Error: no communication with the ECM
Problem and customer solution of Opcom firmware 1.95 communication error
There is no communication with the ECM
Interface communication error, or interface not powered from car
Timeout occurred for Read Fault Codes Information!
Possible reasons are:
Ignition switched OFF
Communication error with the ECU
ECU is busy, or rejects request
U2201-00 CAN-Bus No Communication with EHU (Entertainment Head Unit)
Opcom interface: vaux-com 120309
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)