Code result
P25C4
Brake Booster Temperature Sensor A Circuit
Moderate severity
What it means
The temperature sensor monitoring the electric brake booster (iBooster, eBooster) returns no usable signal. Without temperature feedback the controller derates booster assist to protect the motor.
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
Open sensor element or broken sensor wire
highOne of the most commonly reported causes for this code — check this first.
Corroded connector on the booster sensor pigtail
mediumA plausible cause — test and verify before replacing parts.
Related help
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