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Unable to read dtc

Posted: Tue Dec 16, 2025 8:16 am
by MckOutlaw76
Monsters coming up with errors unable to read DTC says PCM board successful DTC reading no errors but then PCM unable to read DTCHIMNHVic integrated is a driver solar radiator and passenger solar ready ICM unable to read DTC BEM can’t read DTC I see can’t read DTC RCM unable to read DTC so someone I believe that someone accidentally reverse priority the battery and sorted out the BCM ECG. Perhaps I have checked the in-line fuse between the battery and the fuse box. That’s all fine. I’ve checked all the main fuses and all the smaller micro fuses in the fuse box and underneath the dash in the inside the car. I’ve also there’s no damage to any of the wiring anywhere or anything like that. The short was about as quick as a reflex action but enough to cause communication breakdown between the modules or etc. So forth the car is coming up with following faults on the dash brake fail ABS fault DSC fault system comes fault and if I connect the full scan app or try and connect it it will not communicate with the ECU so I got another ECU exact same exact same model exact same same engine compatible plugged that in I can then communicate with the ECU. I believe where I’m getting all these error codes but no error code come off on the dash needs to be coded or whatever because also has a new ICC unit in It as the other one was fucked and I may have issues with the key itself and smart lock so got it all going on. I need to know where to start. Anyone got any answers?