About the Valeo V4 generation
- ECU manufacturer
- Valeo
- Supported models
- 2
- Solutions across family
- 3
- Mapped DTC codes
- 336
The V4 family covers 2 control units in the Map Decoder database. Each model carries its own map definitions and its own measured DTC data, so coverage is stated per model rather than assumed for the whole generation.
Solutions available across V4
The list below is the union of what is supported somewhere in this family. Open a model to see exactly which of these apply to it.
Catalyst Off
Disables catalyst efficiency monitoring in V4.
Lambda / O2
Disables lambda / O2 sensor monitoring in V4 without breaking fuelling.
Throttle Valve (TVA)
Disables throttle valve actuator control and monitoring in V4.
Valeo V4 — frequently asked questions
Which Valeo V4 ECUs does Map Decoder support?
2 models are covered: V42 and V46.x.
What can Map Decoder do on a V4 file?
Across the family the validated operations are Catalyst Off, Lambda / O2 and Throttle Valve (TVA). Availability differs per model — the ECU page lists exactly what is supported for that model.
Does Map Decoder correct V4 checksums?
Yes. Checksums for the regions a patch changes are recalculated automatically during patch generation.
How many DTC codes are mapped for V4?
336 distinct diagnostic trouble codes are stored across the family, each with an address and byte values measured on real files.
Tune Valeo V4 files
Map Decoder analyses Valeo V4 files, detects the maps and generates a verified patch with the checksum corrected.