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.

Formulaflash sofwtare v1.1.70 has new support for GM ACDelco E88 / E90 / E93 ECUs. Here iECUTool.eu will show how to read and write GM E88 ECU with FormulaFlash programmer?
Run Formula Flash software. Choose E88 ECU type and select bench mode.
Check the connection diagram.

Connect 6 wires: 3x VCC, CAN-H, CAN-L and GND.
Set up bench connection.


Hit "Connect" to build a connection between device and ECU.
The ECU has been decrypted. So we can read ECU.
Read and save ECU data.
Then write ECU.
Formula flash also does checksum correction.

FormulaFlash ecu programmer new bench protocol is coming: Ford Continental SID211, SID212 & SID212EVo.
FormulaFlash Update
v1.1.9.0
Release Date: 31.07.2026
What’s New?
Present for years on numerous diesel applications, including SID211, SID212 ECUs represent one of the most requested solutions among workshops specialised in calibration and electronic programming.
Technical focus
Supported vehicle list:

FormulaFlash ecu programmer will release a new software version 1.1.2.0 soon.
Add 25 new Hardcore update:
V1.1.2.0 (Jan, 13th, 2026)
DETAILED UPDATE NOTES
NO.1
Agco
Car Model
DT Series 2008 EDC7UC31 (Bench/CheckSum)
DT-A Series 2005–2008 EDC7UC31
(Bench/CheckSum)
DT-B Series 2009–2010 EDC7UC31 (Bench/CheckSum)
Gleaner
2000–2016 EDC7UC31 (Bench/CheckSum)
RT Series 2008 EDC7UC31 (Bench/CheckSum)
RT-A Series 2006–2011 EDC7UC31
(Bench/CheckSum)
NO.2 Agrale
Car Model
10000 Series 2012–2016 EDC7UC31–14M0 (Bench/CheckSum)
14000 Series
2012–2016 EDC7UC31–14M0 (Bench- CheckSum)
8 Series 2008 EDC7C1
(Bench/CheckSum)
Omnibus 2004–2016 EDC7UC31–14M0 (Bench/CheckSum)
Omnibus
2007–2016 EDC7UC31–14M0 (Bench/CheckSum)
Omnibus 2008 EDC7C1 (Bench/CheckSum)
Omnibus 2005–2016 EDC7UC31–14M0
(Bench/CheckSum)
Omnibus 2008–2012 EDC7C1 (Bench/CheckSum)
Omnibus
2009–2016 EDC7UC31–14M0 (Bench/CheckSum)
NO.3 CASE Tractors
Car Model
Afc 2008 EDC7UC31 (Bench/CheckSum)
Afx 2008 EDC7UC31
(Bench/CheckSum)
Ih Maxxum 2011 EDC7UC31 (Bench/CheckSum)
Ih Steiger 2007
EDC7UC31 (Bench/CheckSum)
Puma 2014 EDC7UC31 (Bench/CheckSum)
Puma 2013
EDC7UC31 (Bench/CheckSum)
Series 3 2014 EDC7UC31 (Bench/CheckSum)
Stx 2013
EDC7UC31 (Bench/CheckSum)
NO.4 Case Ih
Car Model
Axial-Flow Combines 1998–2016 EDC7UC31 (Bench/CheckSum)
Farmall 100A
Series 2012–2016 EDC7UC31 (Bench/CheckSum)
Farmall 100SA Series 2012–2016
EDC7C1/C2 (Bench/CheckSum)
Farmall C Series 2008–2015 EDC7C1/C2
(Bench/CheckSum)
Farmall Series 2009–2012 EDC7C1/C2
(Bench/CheckSum)
Farmall U Series 2008–2016 EDC7C1/C2
(Bench/CheckSum)
Farmall Utility Series 2008–2011 EDC7C1/C2
(Bench/CheckSum)
JXU Maxxima Series 2004–2008 EDC7C1/C2 (Bench/CheckSum)
NO.5 Deutz
Car Model
Agrotron 2007 EDC7UC31 (Bench/CheckSum)
Atlas 2006 EDC7UC31
(Bench/CheckSum)
NO.6 Doosan
Car Model
Dx300 2006–2013 EDC7C1 (Bench/CheckSum)
NO.7 Fendt
Car Model
200 Vario 2007–2015 EDC7UC31 (Bench/CheckSum)
300 Vario 2008–2014 EDC7UC31
(Bench/CheckSum)
400 Vario 2003–2014 EDC7UC31 (Bench/CheckSum)
700 Vario
2006–2015 EDC7UC31 (Bench/CheckSum)
800 Vario 2003–2015 EDC7UC31
(Bench/CheckSum)
900 Vario 2003–2015 EDC7UC31 (Bench/CheckSum)
Harvester 6000 Series 2011 EDC7UC31 (Bench/CheckSum)
NO.8 Iveco
Car Model
Eurocargo 2000–2016 EDC7UC31 (Bench/CheckSum)
Eurocargo 2000–2016 EDC7C1
(Bench/CheckSum)
Eurocargo 2006–2016 EDC7UC31 (Bench/CheckSum)
Eurocargo
2000–2014 EDC7C1 (Bench/CheckSum)
Eurocargo 2000–2014 EDC7UC31
(Bench/CheckSum)
Eurocargo 2003–2005 EDC7UC31 (Bench/CheckSum)
Eurocargo
2000–2005 EDC7C1 (Bench/CheckSum)
Eurocargo 2000–2005 EDC7UC31
(Bench/CheckSum)
Powerstar 2006–2016 EDC7UC31–12.10
(Bench/CheckSum)
Stralis 2002–2016 EDC7UC31–12.10 (Bench/CheckSum)
Strals
2006–2016 EDC7UC31–12.10 (Bench/CheckSum)
NO.9 Jac Truck
Car Model
Hfc 2004–2012 EDC7UC31 (Bench/CheckSum)
NO.10 Landini Tractors
Car Model
7 Series 2010 EDC7UC31–13 (Bench/CheckSum)
7 Series 2011 EDC7UC31–13
(Bench/CheckSum)
NO.11 Man
Car Model
BUS 240 2008–2011 EDC7C3 (Bench/CheckSum)
TGE 2012–2020 EDC7C3
(Bench/CheckSum)
NO.12 JAC Trucks
Car Model
Stralis 2002–2012 EDC7UC31–12.10 (Bench/CheckSum)
Stralis 2005–2015
EDC7UC31–12.10 (Bench/CheckSum)
Stralis 2012–2015 EDC7UC31–12.10
(Bench/CheckSum)
Strater 2010–2015 EDC7UC31–12.10 (Bench/CheckSum)
Tector
2003–2007 EDC7C1 (Bench/CheckSum)
Tector 2008–2016 EDC7UC31–12.10
(Bench/CheckSum)
Trakker 2004–2016 EDC7UC31–12.10 (Bench/CheckSum)
Vertis
2010–2015 EDC7UC31–12.10 (Bench/CheckSum)
NO.12 Man Trucks
Car Model
Bus 2005 EDC7C32
(Bench/CheckSum)
Tg-a 2006 EDC7C32 (Bench/CheckSum)
Tg-l 2008 EDC7C32
(Bench/CheckSum)
Tg-m 2006 EDC7C32 (Bench/CheckSum)
Tg-s 2006 EDC7C32
(Bench/CheckSum)
Tg-x 2003 EDC7C32 (Bench/CheckSum)
NO.13 Massey Ferguson
Car Model
MF 6400 2007 EDC7UC31 (Bench/CheckSum)
MF 7400 2006 EDC7UC31
(Bench/CheckSum)
MF 8400 2005 EDC7UC31 (Bench/CheckSum)
MF 8600 2006
EDC7UC31 (Bench/CheckSum)
NO.14 New Holland
Car Model
CR Series 2002–2016 EDC7UC31 (Bench/CheckSum)
CR Series 2008 EDC7UC31
(Bench/CheckSum)
CSX Series 2007 EDC7UC31 (Bench/CheckSum)
CX Series
2001–2016 EDC7UC31 (Bench/CheckSum)
CX Series 2008 EDC7UC31
(Bench/CheckSum)
E 2007 EDC7UC31 (Bench/CheckSum)
Fr 2005 EDC7UC31
(Bench/CheckSum)
Mxu 2007 EDC7UC31 (Bench/CheckSum)
T 2007–2008 EDC7UC31
(Bench/CheckSum)
T6 Series 2012–2016 EDC7UC31 (Bench/CheckSum)
T7 Series
2011–2016 EDC7UC31 (Bench/CheckSum)
T7500 Series 2007–2011 EDC7UC31
(Bench/CheckSum)
T8 Series 2011–2018 EDC7UC31 (Bench/CheckSum)
T9 Series
2011–2016 EDC7UC31 (Bench/CheckSum)
Ts 2008 EDC7C1/C2 (Bench/CheckSum)
Tvt
2010 EDC7UC31 (Bench/CheckSum)
NO.15 Same Tractors
Car Model
Iron 2002 EDC7UC31
(Bench/CheckSum)
NO.16 Steyr
Car Model
Cvt 2004 EDC7C1/C2 (Bench/CheckSum)
NO.17 Valtra
Car Model
A Series 2013–2016 EDC7UC31 (Bench/CheckSum)
BC Series 2007–2016 EDC7UC31
(Bench/CheckSum)
N Series 2007–2017 EDC7UC31 (Bench/CheckSum)
N Versu Series 2007–2017 EDC7UC31 (Bench/CheckSum)
T Series 2004–2016
EDC7UC31 (Bench/CheckSum)
NO.18 Valtra Tractors
Car Model
N Series 2008 EDC7UC31 (Bench/CheckSum)
N Series 2009 EDC7UC31
(Bench/CheckSum)
T Series 2011 EDC7UC31 (Bench/CheckSum)
T Series 2012 EDC7UC31 (Bench/CheckSum)
T Series 2013 EDC7UC31
(Bench/CheckSum)
NO.19 Volkswagen (VW) Trucks
Car Model
Constellation 2014 EDC7C32 (Bench/CheckSum)
NO.20 Volvo Penta
Car Model
D6 2003–2006 EDC7C1/C2 (Bench/CheckSum)
NO.21 Dodge
Car Model
Sprinter 2006–2016 CRD2.x MPC5566 (Bench/CheckSum)
NO.22 Freightliner
Car Model
Sprinter 2000–2013 CRD2.x MPC5566 (Bench/CheckSum)
NO.23 Mercedes
Car Model
A-Class 2012–2015 CRD2.x MPC5566 (Bench/CheckSum)
B-Class 2011–2015 CRD2.x
MPC5566 (Bench/CheckSum)
C-Class 2016 CRD2.x MPC5566
(Bench/CheckSum)
C-Class 2007–2011 CRD2.x MPC5566 (Bench/CheckSum)
C-Class
2012–2018 CRD2.x MPC5566 (Bench/CheckSum)
CLA-Class 2012–2016 CRD2.x MPC5566
(Bench/CheckSum)
CLC-Class 2008–2009 CRD2.x MPC5566
(Bench/CheckSum)
CLS-Class 2011–2015 CRD2.x MPC5566 (Bench/CheckSum)
E-Class 2009–2016 CRD2.x MPC5566 (Bench/CheckSum)
E-Class 2008–2015 CRD2.x
MPC5566 (Bench/CheckSum)
GLA-Class 2013–2015 CRD2.x MPC5566
(Bench/CheckSum)
GLK-Class 2008–2012 CRD2.x MPC5566
(Bench/CheckSum)
Sprinter 2006–2017 CRD2.x MPC5566 (Bench/CheckSum)
Viano
1999–2014 CRD2.x MPC5566 (Bench/CheckSum)
Vito 2003–2014 CRD2.x MPC5566
(Bench/CheckSum)
FormulaFlash ECU programmer released new software version 1.1.0.0 in January 2026.
FormulaFlash V1.1.0.0:
UPGRADE DETAILS
NEW PROTOCOLS ADDED
Denso 3rd generation
Toyota Auris 2019–2021 DENSO GEN3
Toyota Avalon 2018–2021 DENSO
GEN3
Toyota CH-R 2019–2022 DENSO GEN3
Toyota Camry 2018–2021 DENSO
GEN3
Toyota Corolla 2019–2022 DENSO GEN3
Toyota Crown 2019–2022 DENSO
GEN3
Toyota Harrier 2018–2022 DENSO GEN3
Toyota Highlander 2019–2022 DENSO
GEN3
Toyota Hilux/Vigo (8th) 2020–2022 DENSO GEN3
Toyota Innova 2016–2020 DENSO
GEN3
Toyota Kluger 2019–2022 DENSO GEN3
Toyota Land Cruiser 2020–2022
DENSO GEN3
Toyota Levin 2019–2021 DENSO GEN3
Toyota RAV4 2019–2021 DENSO
GEN3
Toyota Venza 2020–2022 DENSO GEN3
Toyota Yaris 2018–2022 DENSO
GEN3
Read, write and checksum correction without disassembly or external adapters.
Toyota Gen II and Gen I ECUs coming soon.
AC Delco
ACDELCO T87A (TCM), SPC564A BENCH read/write,
ACDELCO T87 (TCM), SPC564A
BENCH read/write,
ACDELCO E82 BOOT mode read/write + checksum
MPC5676,
ACDELCO e730/35/40/45/50 (TCM), MPC555 BENCH read/write,
ACDELCO
E87 BOOT mode read/write + checksum MPC5565,
ACDELCO E92 BOOT mode read/write
+ checksum MPC5674,
ACDELCO E98 BOOT mode read/write + checksum MPC5674,
ECU DATA CENTER IMMO OFF MODULE
BMW Mini MSV70,
GM series, Cadillac, Buick, Chevrolet, Opel E37, E38, E67,
E78,
Citroen, Peugeot ME7.4.4, ME7.4.5,
Toyota Denso 3rd
generation.
