What does b1421 mean on a Toyota?
B1421 TOYOTA Meaning The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning AUTO mode. The output voltage from the solar sensor varies in accordance with the amount of sunlight.
What does b1421 mean on an air conditioner?
The output voltage of the solar sensor changes in accordance with the amount of solar radiation. As the amount increases, the voltage increases. As the amount decreases, the voltage decreases. The air conditioning amplifier reads voltage output from the solar sensor. B1421: Open or short in solar sensor circuit circuit.
What to do if your DTC is b1421?
If your air conditioning system works properly, and DTC B1421 is the only DTC that is registering, then don’t worry. 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. You need a light that will cast heat upon the solar sensor.
What does DTC b1421 mean in solar sensor circuit?
B1421: Open or short in solar sensor circuit circuit. (If the check is performed in a dark place, DTC B1421 may be displayed.) Click to expand… Just another example of over-engineering, IMHO. Britprius likes this. can I (without a tester !) do a read out of errors on the screen in some way ?
B1421 TOYOTA Meaning The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning AUTO mode. The output voltage from the solar sensor varies in accordance with the amount of sunlight.
The output voltage of the solar sensor changes in accordance with the amount of solar radiation. As the amount increases, the voltage increases. As the amount decreases, the voltage decreases. The air conditioning amplifier reads voltage output from the solar sensor. B1421: Open or short in solar sensor circuit circuit.
If your air conditioning system works properly, and DTC B1421 is the only DTC that is registering, then don’t worry. 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. You need a light that will cast heat upon the solar sensor.
How to diagnose a b1421 Toyota solar sensor?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. How much do you know about cars? The cost of diagnosing the B1421 TOYOTA code is 1.0 hour of labor.