How to perform ME7.8.8 ECU O2 OFF for Chinese cars ChangAn, Geely, Changecheng etc using FormulaFlash programmer?
O2 OFF:
“O2 off” generally means the oxygen sensor has been deliberately turned off, or the computer is detecting that it’s not working properly. This can happen in two very different ways: through a custom engine tune, or because of a mechanical/electrical failure.
1. Connect ECU
Run Formulaflash software.
Quick search ME7.8.8 ECU.
Check wiring diagram.
Set up boot connection according to the diagram.
2.Read ECU
Hit Connect and unlock protection 5 times at least 15s between each attempt.
Read and save eeprom & flash after unlocking.
3. Process Data
Visit FormulaFlash data processing user center.
Go to user center. Upload original data to do O2 off or DTC off etc.
Select Data Processing- HO2 Oxygen Sensor System.
Input device S/N, Vehicle info, upload original DTC data/HO2 data to process data.
Hit Carry Close.
Copy link to paste in a new page, it will download the modified data automatically.
4.Write ECU
Back to connect ECU again. Unlock protection for 5 times.
Then write the modified data with Formulaflash software.
