Unscanable ECM - MAF Sensor - Engine System Fault

V

Victor_600Lt

Guest
Hey all,

Having trouble with my 20' 720s (sport cats,remap) flashing me a "engine System Fault" crusing on the highway few days ago.

No OBD fault so can't see everything with a simple dongle, going withe Autel Maxis908 PRo,
Succeed to scan every module but not the ECM (the one I need) saying " ECM = No response"

All over modules are scanned and clears from DTC's, so don't know how to do before buying a Diagcode or going to a dealer (no warranty)

The car drive normaly before 4.000rpm...

Unscanable ECM - MAF Sensor - Engine System Fault

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