Citroen ECU Tuning & ECU Solutions

24 control units fitted to Citroen vehicles, with automatic map detection and validated patches.

Coverage

Citroen ECU coverage

Supported ECUs
24
Vehicle models
17
Vehicle variants
620
Mapped DTC codes
11,096

Map Decoder links 24 control units to Citroen vehicles, covering 620 recorded engine variants. Every pairing below comes from a real file record — no vehicle-to-ECU relation is assumed.

Solutions

Solutions available on Citroen ECUs

Availability differs per control unit. Each solution below opens the Citroen coverage page for that operation.

Solution coverage

Citroen solutions in detail

Each page lists the exact ECUs and engine variants that can take the operation.

Models

Citroen models

Vehicle + ECU

Citroen ECUs in detail

Each page lists the exact engine variants that carry the control unit.

Other ECUs found in Citroen vehicles

Fewer recorded variants, so these link straight to the ECU page.

FAQ

Citroen ECU tuning — frequently asked questions

Which ECUs are used in Citroen vehicles?

Map Decoder has data for 24 control units fitted to Citroen vehicles, built by Bosch, Delphi, Marelli, Siemens, Valeo and Visteon.

What can Map Decoder do on a Citroen file?

Across Citroen ECUs the validated operations are AdBlue / SCR Off, Additive (Eolys) Off, Catalyst Off, DPF Off, DTC Removal, EGR Off, Intake Flaps Off, Lambda / O2, MAF Off, NOx Off, OPF / GPF Off, Speed Limiter (VMAX) Off, Stage 1, Start-Stop Off and Throttle Valve (TVA). Availability depends on the exact ECU.

How do I know which ECU my Citroen has?

Upload the original read — Map Decoder identifies the control unit from the binary itself, so you do not need to know the ECU part number in advance.

Work on Citroen ECU files

Map Decoder analyses Citroen ECU files, detects the maps and generates a verified patch with the checksum corrected.