Problem - Syncro Volvo S40

[InfoPerformance]

Hello. I have a problem with this ecu.

Volvo S40 - Ecu SID803

Cem with - 9S12XDT256

I need repair the syncro. ID ABS is Correct. Only syncro with CEM.

Thanks

[InfoPerformance]

I have this dtc in ECU engine - C301

Please I need help.

[MartiLer]

sync ok.......

[InfoPerformance]

Thanks, but the car still won't start, can someone help me?

[immokill]

I have this dtc in ECU engine - C301

Please I need help.

This error is common when flashing this ecu , it is chekssum problem software problem , but i saw many Volvos that start with this error even with original file with that error code, You have to check CEM connectors ,and probably ecu cheksum and diagnose ABS if possible ,if not then abs is bad.
Regards

[naprawa5]

Synchro is ok This error has no effect on engine starting. Check the parameters of the shaft position sensor and injectors.

[InfoPerformance]

Hello. Cem connectors it´s ok and I connect to ABS,