ECUHELP KT200II ECU Programmer is confirmed to OBD mode read and write Citroen c5(x7) 2.0 hdi Fap 136hp DCM3.4.

Vehicle & ECU Information
Vehicle: Citroën C5 (X7)
Engine: 2.0 HDi FAP 136HP
ECU: DCM3.4
Programming Mode: OBD
Tool: ECUHELP KT200II 2026 ECU Programmer

Look at the first image of plugging the KT200II to the Citroen car:

And the second image of writing DCM3.4 via OBD successfully.

Conclusion
The ECUHELP KT200II 2026 ECU Programmer has been verified to read and write the Citroën C5 (X7) 2.0 HDi FAP 136HP DCM3.4 ECU via OBD mode successfully. With its stable communication and straightforward operation, KT200II provides an efficient solution for ECU programming without ECU disassembly.