Powertrain
generic / SAE
P25A2
Brake System Control Module A Requested MIL Illumination
The primary brake system control module (ABS/ESC/iBooster) has requested the ECM to illuminate the MIL because of an emissions-relevant fault on its side — for example a regenerative braking fault on a hybrid that affects driveline torque flow. The original fault is in the brake module.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / A2
Possible causes
- Internal fault in the brake module — read its DTCs high
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 80–1500 €
- Estimated time: 0.5–5 h
- Component: brake control module a
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012