About the Bosch MDG1 generation
- ECU manufacturer
- Bosch
- Supported models
- 3
- Solutions across family
- 10
- Mapped DTC codes
- 3,820
The MDG1 family covers 3 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 MDG1
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 MDG1.
Additive (Eolys) Off
Disables the fuel additive (Eolys) system and its level monitoring in MDG1.
Catalyst Off
Disables catalyst efficiency monitoring in MDG1.
DPF Off
Removes diesel particulate filter regeneration and monitoring logic from MDG1 files.
EGR Off
Disables exhaust gas recirculation control in MDG1 calibrations, including the related fault reporting.
Lambda / O2
Disables lambda / O2 sensor monitoring in MDG1 without breaking fuelling.
MAF Off
Removes mass air flow sensor dependency and its diagnostics from MDG1.
NOx Off
Disables NOx sensor monitoring and the associated fault paths in MDG1.
Stage 1
Software-only performance calibration for MDG1, with the supporting limiter changes.
Throttle Valve (TVA)
Disables throttle valve actuator control and monitoring in MDG1.
Supported Bosch MDG1 ECUs
- MDG1CP0021,586 DTC
- MDG1_MD1CP0027 solutions · 421 DTC
- MDG1_MD1CP0329 solutions · 1,813 DTC
Bosch MDG1 — frequently asked questions
Which Bosch MDG1 ECUs does Map Decoder support?
3 models are covered: MDG1CP002, MDG1_MD1CP002 and MDG1_MD1CP032.
What can Map Decoder do on an MDG1 file?
Across the family the validated operations are AdBlue / SCR Off, Additive (Eolys) 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 MDG1 checksums?
Yes. Checksums for the regions a patch changes are recalculated automatically during patch generation.
How many DTC codes are mapped for MDG1?
3,820 distinct diagnostic trouble codes are stored across the family, each with an address and byte values measured on real files.
Tune Bosch MDG1 files
Map Decoder analyses Bosch MDG1 files, detects the maps and generates a verified patch with the checksum corrected.