Because the brake booster is not receiving correct pressure sensor data, the electric pump may not assist you properly. The pedal will feel like pressing against a brick.
This code is triggered when the Brake Control Module monitors the electrical state of the ABS pump motor and finds it outside normal parameters:
When this error code triggers, your Toyota vehicle will present several distinct warning signs: i--- Toyota C052f14
: Ensure the battery voltage is normal before replacing expensive parts. If low voltage codes are present, fix those first. Clear and Drive
On a Toyota Prius or Camry Hybrid, find the black brake booster master cylinder assembly near the firewall on the driver's side. The pressure sensor is a small, three-wire sensor screwed into the side or top of the booster unit. Because the brake booster is not receiving correct
After any sensor or booster repair, you must perform a brake stroke sensor zero point calibration. With a capable scan tool:
: A weak auxiliary battery or a drop in system voltage can falsely trigger this code. Faulty Brake Actuator Assembly If low voltage codes are present, fix those first
The ABS, Brake, and possibly Traction Control (VSC/TRAC) lights will illuminate on the dashboard.
If the wiring is intact, the issue likely resides within the ABS Pump Motor/Actuator Assembly . Note that while some specialized shops can repair these modules, replacement of the actuator unit is the standard dealer-level fix.