About the Delphi CRD generation
- ECU manufacturer
- Delphi
- Supported models
- 2
- Solutions across family
- 9
- Mapped DTC codes
- 3,009
The CRD 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 CRD
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.
AdBlue / SCR Off
Turns off the SCR / AdBlue dosing strategy and its countdown logic in CRD.
Catalyst Off
Disables catalyst efficiency monitoring in CRD.
DPF Off
Removes diesel particulate filter regeneration and monitoring logic from CRD files.
EGR Off
Disables exhaust gas recirculation control in CRD calibrations, including the related fault reporting.
Lambda / O2
Disables lambda / O2 sensor monitoring in CRD without breaking fuelling.
MAF Off
Removes mass air flow sensor dependency and its diagnostics from CRD.
NOx Off
Disables NOx sensor monitoring and the associated fault paths in CRD.
Stage 1
Software-only performance calibration for CRD, with the supporting limiter changes.
Throttle Valve (TVA)
Disables throttle valve actuator control and monitoring in CRD.
Other Delphi ECU families
- DCM7 ECUs
Delphi CRD — frequently asked questions
Which Delphi CRD ECUs does Map Decoder support?
2 models are covered: CRD2 and CRD3.
What can Map Decoder do on a CRD file?
Across the family the validated operations are AdBlue / SCR Off, Catalyst Off, DPF Off, EGR Off, Lambda / O2, MAF Off, NOx Off, Stage 1 and Throttle Valve (TVA). Availability differs per model — the ECU page lists exactly what is supported for that model.
Does Map Decoder correct CRD checksums?
Yes. Checksums for the regions a patch changes are recalculated automatically during patch generation.
How many DTC codes are mapped for CRD?
3,009 distinct diagnostic trouble codes are stored across the family, each with an address and byte values measured on real files.
Tune Delphi CRD files
Map Decoder analyses Delphi CRD files, detects the maps and generates a verified patch with the checksum corrected.