MG ECU Modules and Addresses

Observations from the map

The MG map ranks 23 with 27 definitions; the largest module types are: ecu_module (5), high-voltage system modules (3), charger module (2).

27 of the addresses use 11-bit CAN identifiers and 0 use 29-bit identifiers. 1 definitions have scan priority 1; priority decides which module a scan starts from.

The map contains 2 safety-critical module definitions (ABS/brakes and airbag). Opening a diagnostic session on these can turn on a warning lamp; the vehicle must not be driven during the operation.

Modules in the map

Module name	Type	Address	Response	Priority
ECM (Engine, OBD-II)	Engine Control Unit	`7E0`	`7E8`	1
IPK (Instrument Cluster)	Instrument Cluster	`760`	`768`	5
GWM (Gateway)	Gateway Module	`710`	`718`	7
ATC (Climate)	Climate Control Module	`750`	`758`	8
VCU (Vehicle Control)	High-Voltage System Modules	`7E3`	`7EB`	20
BMS Mk2 (MG4/MG5/HS)	High-Voltage Battery Module	`7E5`	`7ED`	21
BMS Mk1 (ZS EV gen1)	High-Voltage Battery Module	`781`	`789`	22
CCU / EVCC	Charger Module	`7E4`	`7EC`	23
EVCC (Charge Controller)	Charger Module	`784`	`78C`	24
DCDC	High-Voltage System Modules	`785`	`78D`	25
PEPS (Keyless)	Immobiliser / Alarm Module	`745`	`74D`	26
TPMS	Tyre Pressure (TPMS) Module	`724`	`72C`	27
Gear selector	Transmission Control Unit	`771`	`779`	28
ABS safety-critical	ABS / ESP Module	`720`	`728`	29
SRS safety-critical	Airbag / SRS Module	`730`	`738`	30
BCM	Body Control Module	`740`	`748`	31
Electronic Power Steering	Steering Module	`721`	`729`	32
Electronic Steering Lock	Steering Module	`742`	`74A`	33
Inverter control	High-Voltage System Modules	`782`	`78A`	34
Forward vehicle collision mitigation	Driver Assist and Safety Modules	`733`	`73B`	35
Front radar	Driver Assist and Safety Modules	`734`	`73C`	36
Telematics	Telematics Module	`711`	`719`	37
Electronic Park Brake	—	`723`	`72B`	38
Rear cross traffic	—	`732`	`73A`	39
Powertrain (OBD)	—	`7E1`	`7E9`	40
Powertrain / OBD (7E2)	—	`7E2`	`7EA`	41
Powertrain / OBD (7E7)	—	`7E7`	`7EF`	42

← ECU maps by make

See the modules in your vehicle

With an ELM327-based BLE OBD2 adapter, CarCoding scans the vehicle’s modules, reads fault codes from those it can reach and explains every code in plain language. Which modules are reachable depends on the make and on the vehicle. The app is free to download.

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Data source: the CarCoding ECU scan map (ecuDatabase.ts). The addresses and names in the table are definitions from the map; they can differ depending on the hardware and software version in your vehicle.

Disclaimer: This page offers general information and does not replace an inspection by a qualified workshop. Any work carried out on the vehicle is your own responsibility.