04 ES330 A/C diagnostic codes
11-01-23 | 06:25 AM
#1
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04 ES330 A/C diagnostic codes
2004 Lexus ES330. I noticed as the weather is getting colder that I'm not getting hot air when the heat should be on. I ran the A/C diagnostic test routine and got the codes 21, 24, 36, and 46. I've found those codes on other models Lexus/Toyota lists, but I know that those don't necessarily match with my car. Does anyone have the code list for an 04 ES330?
11-01-23 | 08:23 AM
#2
Pole Position
Joined: Nov 2019
Posts: 2,842
Likes: 810
From: Michigan
Hello,
Here is a list of codes that should be identical to your car.
Codes 21 and 24 indicate issues with Driver and Passenger Light sensor, with that, they have a tendency to appear and disappear depending on the ambient lighting, so they both are safe to ignore. If you really want to test them, you can take the car into a bright sunlight and reset the codes by pulling the ECU-B fuse, then check the codes again.
Codes 36 and 46, on the other hand, are a lot more interesting, as they refer to the failure of the Driver's side Airmix Servo and its Position Sensor, which is more likely than not the source of your issue. What happens is when Position Sensor starts to wear out over time, it starts to provide erroneous readings, forcing the Servo to oblige and follow, which can quickly finish off both what remains of the sensor, and the servo itself, which is likely what happened in your case.
While you can try taking the Servo apart to see what's inside, it usually makes more sense to replace it entirely, considering its tricky placement in the vehicle. Here you can find the Parts Catalogue that shows the location of all the Servos in the car.
Hope this helps and best of luck!
Here is a list of codes that should be identical to your car.
Codes 21 and 24 indicate issues with Driver and Passenger Light sensor, with that, they have a tendency to appear and disappear depending on the ambient lighting, so they both are safe to ignore. If you really want to test them, you can take the car into a bright sunlight and reset the codes by pulling the ECU-B fuse, then check the codes again.
Codes 36 and 46, on the other hand, are a lot more interesting, as they refer to the failure of the Driver's side Airmix Servo and its Position Sensor, which is more likely than not the source of your issue. What happens is when Position Sensor starts to wear out over time, it starts to provide erroneous readings, forcing the Servo to oblige and follow, which can quickly finish off both what remains of the sensor, and the servo itself, which is likely what happened in your case.
While you can try taking the Servo apart to see what's inside, it usually makes more sense to replace it entirely, considering its tricky placement in the vehicle. Here you can find the Parts Catalogue that shows the location of all the Servos in the car.
Hope this helps and best of luck!
11-01-23 | 12:00 PM
#3
Thread Starter
Rookie
Joined: Jun 2021
Posts: 25
Likes: 5
From: Virginia/Florida/Tennessee depending on work
Hello,
Here is a list of codes that should be identical to your car.
Codes 21 and 24 indicate issues with Driver and Passenger Light sensor, with that, they have a tendency to appear and disappear depending on the ambient lighting, so they both are safe to ignore. If you really want to test them, you can take the car into a bright sunlight and reset the codes by pulling the ECU-B fuse, then check the codes again.
Codes 36 and 46, on the other hand, are a lot more interesting, as they refer to the failure of the Driver's side Airmix Servo and its Position Sensor, which is more likely than not the source of your issue. What happens is when Position Sensor starts to wear out over time, it starts to provide erroneous readings, forcing the Servo to oblige and follow, which can quickly finish off both what remains of the sensor, and the servo itself, which is likely what happened in your case.
While you can try taking the Servo apart to see what's inside, it usually makes more sense to replace it entirely, considering its tricky placement in the vehicle. Here you can find the Parts Catalogue that shows the location of all the Servos in the car.
Hope this helps and best of luck!
Here is a list of codes that should be identical to your car.
Codes 21 and 24 indicate issues with Driver and Passenger Light sensor, with that, they have a tendency to appear and disappear depending on the ambient lighting, so they both are safe to ignore. If you really want to test them, you can take the car into a bright sunlight and reset the codes by pulling the ECU-B fuse, then check the codes again.
Codes 36 and 46, on the other hand, are a lot more interesting, as they refer to the failure of the Driver's side Airmix Servo and its Position Sensor, which is more likely than not the source of your issue. What happens is when Position Sensor starts to wear out over time, it starts to provide erroneous readings, forcing the Servo to oblige and follow, which can quickly finish off both what remains of the sensor, and the servo itself, which is likely what happened in your case.
While you can try taking the Servo apart to see what's inside, it usually makes more sense to replace it entirely, considering its tricky placement in the vehicle. Here you can find the Parts Catalogue that shows the location of all the Servos in the car.
Hope this helps and best of luck!
11-11-23 | 11:39 AM
#4
Thread Starter
Rookie
Joined: Jun 2021
Posts: 25
Likes: 5
From: Virginia/Florida/Tennessee depending on work
Hello,
Here is a list of codes that should be identical to your car.
Codes 21 and 24 indicate issues with Driver and Passenger Light sensor, with that, they have a tendency to appear and disappear depending on the ambient lighting, so they both are safe to ignore. If you really want to test them, you can take the car into a bright sunlight and reset the codes by pulling the ECU-B fuse, then check the codes again.
Codes 36 and 46, on the other hand, are a lot more interesting, as they refer to the failure of the Driver's side Airmix Servo and its Position Sensor, which is more likely than not the source of your issue. What happens is when Position Sensor starts to wear out over time, it starts to provide erroneous readings, forcing the Servo to oblige and follow, which can quickly finish off both what remains of the sensor, and the servo itself, which is likely what happened in your case.
While you can try taking the Servo apart to see what's inside, it usually makes more sense to replace it entirely, considering its tricky placement in the vehicle. Here you can find the Parts Catalogue that shows the location of all the Servos in the car.
Hope this helps and best of luck!
Here is a list of codes that should be identical to your car.
Codes 21 and 24 indicate issues with Driver and Passenger Light sensor, with that, they have a tendency to appear and disappear depending on the ambient lighting, so they both are safe to ignore. If you really want to test them, you can take the car into a bright sunlight and reset the codes by pulling the ECU-B fuse, then check the codes again.
Codes 36 and 46, on the other hand, are a lot more interesting, as they refer to the failure of the Driver's side Airmix Servo and its Position Sensor, which is more likely than not the source of your issue. What happens is when Position Sensor starts to wear out over time, it starts to provide erroneous readings, forcing the Servo to oblige and follow, which can quickly finish off both what remains of the sensor, and the servo itself, which is likely what happened in your case.
While you can try taking the Servo apart to see what's inside, it usually makes more sense to replace it entirely, considering its tricky placement in the vehicle. Here you can find the Parts Catalogue that shows the location of all the Servos in the car.
Hope this helps and best of luck!
11-14-23 | 11:10 AM
#6
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Rookie
Joined: Jun 2021
Posts: 25
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From: Virginia/Florida/Tennessee depending on work
If you do change your drivers side servo, there's a good chance you may hit the door lock beep volume control. I had no idea it was there, or what the *beep* I was fooling with. https://www.clublexus.com/forums/es-...using-key.html
12-25-23 | 08:39 PM
#7
3rd Gear
Joined: Dec 2023
Posts: 3
Likes: 0
From: WA
2004 Lexus ES330. I noticed as the weather is getting colder that I'm not getting hot air when the heat should be on. I ran the A/C diagnostic test routine and got the codes 21, 24, 36, and 46. I've found those codes on other models Lexus/Toyota lists, but I know that those don't necessarily match with my car. Does anyone have the code list for an 04 ES330?
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12-26-23 | 07:06 AM
#9
Thread Starter
Rookie
Joined: Jun 2021
Posts: 25
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From: Virginia/Florida/Tennessee depending on work
Start with the key OFF. Hold the auto and recirculate buttons, and turn the key to ON. Instead of showing the temp on the A/C display, it will show diagnostic codes. 00 is no errors.
https://www.clublexus.com/forums/per...eed-codes.html
https://www.clublexus.com/forums/per...eed-codes.html
02-05-24 | 10:55 AM
#10
3rd Gear
Joined: Dec 2023
Posts: 3
Likes: 0
From: WA
I got a code 41 (Air mix door servo motor) which is accurate for the problem I have of not switching from defroster to heater, etc.
I am trying to find the correct replacement part and I see 87106-41041 and 87106-07071.
Are either of these what I need? Thanks
I am trying to find the correct replacement part and I see 87106-41041 and 87106-07071.
Are either of these what I need? Thanks
Last edited by dallert; 02-05-24 at 11:06 AM.
02-05-24 | 11:14 AM
#11
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Joined: Jun 2021
Posts: 25
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From: Virginia/Florida/Tennessee depending on work
While you can try taking the Servo apart to see what's inside, it usually makes more sense to replace it entirely, considering its tricky placement in the vehicle. Here you can find the Parts Catalogue that shows the location of all the Servos in the car.
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