How to Check Whether PSA MD1CS003 ECU is Locked or Not?


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Xhorse Multi Prog Programmer with GODIAG ECU GPT Boot AD Connector and G-V ECU Cable

Xhorse Multi Prog Programmer with GODIAG ECU GPT Boot AD Connector and G-V ECU Cable

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Xhorse VVDI Multi-Prog Programmer is 2nd generation of VVDI Prog Programmer. Free MQB48 License and BMW Bench ISN.
GODIAG G-V ECU Cable for Connecting Xhorse MULTI PROG with GODIAG ECU GPT to Read & Write Data on VAG Gearbox ECU, Engine ECU
How to Check Whether PSA MD1CS003 ECU is Locked or Not?
Most MD1 ECUs after mid-2020 or later are locked. Have tried a few 2021 PSA and were locked.

For PSA MD1CS003 ECU, check part number.

Here is a tip to identify if this ECU is locked or not.

Locked 4xx Series
Not locked 3xx series.

For example, this ECU from a DS3 2022 is locked.

  • BOSCH: 0 281 037 200 (MD1CS003)
  • PEUGEOT: 98 457 808 80
  • Date: 14 March 2022


Series 3xx is possible to be read and written.