What causes C1421 on a Toyota?

Faulty brake actuator assembly (master cylinder pressure sensor) Open or shorted actuator harness Poor electrical connection at the actuator

How do I fix C1421 on a Toyota?

Confirm the code with a scan tool Inspect the sensor and its connector Test the sensor circuit for opens and shorts Check sensor power and ground Replace the sensor only after the circuit tests fail Clear the code and retest

C1421 The master cylinder pressure sensor circuit is open or shorted

Q: What does C1421 mean on a Toyota?

C1421. The master cylinder pressure sensor circuit is open or shorted. Brake assist is disabled and the ABS warning light comes on.. Applies to Toyota, Lexus and Scion models that use this code.

Category: Chassis
Severity: ABS Light
Applies to: Toyota, Lexus and Scion models that use this code

What does C1421 mean on a Toyota?

C1421. The master cylinder pressure sensor circuit is open or shorted. Brake assist is disabled and the ABS warning light comes on.. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of C1421

Faulty brake actuator assembly (master cylinder pressure sensor)
Open or shorted actuator harness
Poor electrical connection at the actuator

How to fix C1421

Confirm the code with a scan tool
Inspect the sensor and its connector
Test the sensor circuit for opens and shorts
Check sensor power and ground
Replace the sensor only after the circuit tests fail
Clear the code and retest