B1421 Toyota Prius

You can usually ignore error code B1421 on your 2004-2009 Prius Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by 3prongpaul, Dec 7, 2012. The B1421 diagnostic trouble code for Toyota vehicles indicates an issue with the solar sensor circuit on the passenger side of the vehicle. The solar sensor is responsible for detecting the intensity of sunlight and adjusting the climate control system accordingly.

Toyota B1421 code: Airbag crash sensor #2 malfunction. Check wiring, sensor, and connections for repair. Steps to fix are listed inside.

Repair Information for B1421 Toyota code. Learn what Solar Sensor Circuit Passenger Side means, location and how to repair. Toyota Prius AC Heating Issue Diagnosed with B1412, B1421, B1433 Codes Prius often faces slow cabin heating and AC blower motor resistor failures causing inconsistent airflow.

Error code B1421 Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by ksor, Apr 23, 2013. Detailed repair manual for the 2008 Toyota Prius L4-1.5L (1NZ-FXE) Hybrid. FAQ 1.

What does OBD code B1421 indicate in a vehicle? OBD code B1421 indicates an issue with the Passenger Power Window Motor circuit. Check for faults in the motor, wiring, connectors, or Body Control Module. 2.

What are the common symptoms associated with OBD code B1421? Make: Toyota Code: B1421/21 Definition: Solar Sensor Circuit (Passenger Side) Cause: Solar sensorHarness or connector between solar sensor and A/C amplifierHarness or connector between solar sensor and main body ECUA/C amplifierMain body ECU Solar sensor Harness or connector between solar sensor and A/C amplifier Harness or connector between solar sensor and main body ECU A/C amplifier Main.