Network
generic or reserved
U3025
Control Module A Disable Circuit/Open
Open circuit on the control module A disable line — used by gateway/master to force the module into a safe-state when needed.
SystemNetwork
Typegeneric or reserved
GroupU3
Range / number– / 25
Possible causes
- Disable wire broken high
- Gateway module routing CAN messages incorrectly low
- CAN terminating resistor (120 Ω) drifted out of spec low
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 50–400 €
- Estimated time: 0.5–2 h
- Component: module disable a
- Component: control wiring
- MIL / check engine light
Sources
References
sae:J2012