B1421 toyota prius 2009. Oct 3, 2025 · The code B1421 in the Toyota Prius mean...

B1421 toyota prius 2009. Oct 3, 2025 · The code B1421 in the Toyota Prius means that the system registers problems with the Solar Sensor Circuit. Mar 30, 2008 · Page 2 of 2 < Prev 1 2 Share This Page > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting >. When using an analog tester, connect the negative (−) lead to terminal 2 and positive (+) lead to terminal 1 of the A/C solar sensor. This means that there is an abnormal connection between the power window motor and the ground, causing an electrical fault. The B1421 code signals a problem within the passenger power window motor circuit, specifically a short to ground. The solar sensor is the small round sensor located in the front upper part of the The B1421 diagnostic trouble code (DTC) indicates that there is a short to ground in the passenger power window motor circuit. Mar 15, 2019 · B1421 onl Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by willywonka84, Mar 14, 2019. This sensor measures sunlight intensity and adjusts the climate control system to ensure optimal comfort inside the vehicle. If you insist upon worrying, then place an incandescent trouble light 1 foot away from the solar sensor, clear the DTC, and see if it stays away. Jul 18, 2010 · The code isn't only on 2004-2009 Prii. Learn what Solar Sensor Circuit Passenger Side means, location and how to repair. The B1421 diagnostic trouble code (DTC) indicates that there is a short to ground in the passenger power window motor circuit. 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. Nov 3, 2012 · If your air conditioning system works properly, and DTC B1421 is the only DTC that is registering, then don't worry. a TOYOTA electrical tester is shown above. This means the circuit is unintentionally connecting to the vehicle’s chassis ground, resulting in electrical malfunction. Apr 9, 2019 · Learn what Solar Sensor Circuit Passenger Side means, location and how to repair. The B1421 code for Toyota vehicles points to an issue with the solar sensor circuit on the passenger side. It existed on Gen 1 (you couldn't talk to the Gen 1 heater with a scan tool, but you could still have it blink 21 on the A/C light). Apr 9, 2019 · Repair Information for B1421 Toyota code. We would like to show you a description here but the site won’t allow us. gsqrfedc rmhmz nbqo xggjxq hokoms