I--- Toyota | C052f14

Poorly installed electronics that tap into the airbag ECU’s power or CAN bus lines can introduce noise or ground faults, tricking the module into detecting a short.

"Brake Booster Pressure Sensor / Brake Booster Stroke Sensor – Circuit Short to Ground or Open." i--- Toyota C052f14

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. Poorly installed electronics that tap into the airbag