Code result
P25A2
Brake System Control Module A Requested MIL Illumination
Moderate severity
What it means
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.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Internal fault in the brake module — read its DTCs
highOne of the most commonly reported causes for this code — check this first.
Related help
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