The most hated B1479 code attack again
Thread Starter
4th Gear
Joined: Jul 2023
Posts: 4
Likes: 0
From: Florida
The most hated B1479 code attack again
Hi community! I'm busting my head with this problem. When you start the ac its blow fine for probably 10 to 15 minutes then suddenly stop blowing cold and the b1479 current code pops up. I was reading the sensor on the scanner and the weird thing is that Its always at 4.36v with ac off or on it just stay the same and not fluctuating up or down, I changed the sensor and still the same . I noticed that the fans stop working when the ac start to blow hot or simple not blowing cold more but I think I saw the ac compressor clutch still engaged and this start to getting to my head and confusing me . I need advice help or guide to solve this problem.. why the sensor stays reading 4.36 on or off and why the ac condenser fan stop working until I restart the ac again and the cicle goes on and on
CL Community Team
Joined: May 2005
Posts: 7,180
Likes: 1,721
From: VA
Welcome to CL. Please review the thread that is a few below yours on the main page and is titled:
DTC 1479 cheap solution: https://www.clublexus.com/forums/rx-...-solution.html
Look at post 88 onward.
DTC 1479 cheap solution: https://www.clublexus.com/forums/rx-...-solution.html
Look at post 88 onward.
Last edited by Clutchless; Jul 26, 2023 at 04:37 AM.
Racer
Joined: May 2006
Posts: 1,988
Likes: 601
From: NC
^^ What he said. The magnet trick described in this thread has saved many owners thousands of dollars during the past few years. Placing a magnet at the right spot on the compressor should always be the first thing to try whenever the infamous B1479 OBDII code shows up.
Thread Starter
4th Gear
Joined: Jul 2023
Posts: 4
Likes: 0
From: Florida
Welcome to CL. Please review the thread that is a few below yours on the main page and is titled:
DTC 1479 cheap solution: https://www.clublexus.com/forums/rx-...-solution.html
Look at post 88 onward.
DTC 1479 cheap solution: https://www.clublexus.com/forums/rx-...-solution.html
Look at post 88 onward.
Intermediate
Joined: Dec 2018
Posts: 378
Likes: 53
From: Indiana
My first guess would be a bad sensor or a bad connection. You replaced the sensor so you reseated the sensor connector, maybe next try to reseat the other end of the cable? The end that connects to the computer? Check to make sure the connector has no corrosion on it and see what happens. If it still reads the same then the problem may be your computer input. Maybe the sensor is sending the correct signal, but the computer's input is shorted and it reads wrong.
Good luck.
Thread Starter
4th Gear
Joined: Jul 2023
Posts: 4
Likes: 0
From: Florida
Did you get an OEM sensor from Toyota?
My first guess would be a bad sensor or a bad connection. You replaced the sensor so you reseated the sensor connector, maybe next try to reseat the other end of the cable? The end that connects to the computer? Check to make sure the connector has no corrosion on it and see what happens. If it still reads the same then the problem may be your computer input. Maybe the sensor is sending the correct signal, but the computer's input is shorted and it reads wrong.
Good luck.
My first guess would be a bad sensor or a bad connection. You replaced the sensor so you reseated the sensor connector, maybe next try to reseat the other end of the cable? The end that connects to the computer? Check to make sure the connector has no corrosion on it and see what happens. If it still reads the same then the problem may be your computer input. Maybe the sensor is sending the correct signal, but the computer's input is shorted and it reads wrong.
Good luck.
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