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Codes 21,24,61

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Old 09-02-13, 03:18 PM
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Brianmoss
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Default Codes 21,24,61
Does anyone know what this means?
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Old 09-03-13, 09:52 AM
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That's what the search button is for.

21= Main o2S and heater signal
24= IAT signal
61=Doesn't exist in the SC400 code list, but I've read it might be something to do with tach or speedo errors...
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Old 09-03-13, 09:54 AM
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Boom. Beat me to it.
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Old 09-03-13, 10:26 AM
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Originally Posted by SC400slide
That's what the search button is for.

21= Main o2S and heater signal
24= IAT signal
61=Doesn't exist in the SC400 code list, but I've read it might be something to do with tach or speedo errors...
I did search and nothing came up thats why i posted. By main o2 do you mean the down stream sensor after the cat or is it one of the two on the manifold that are my upstream ones? I went to auto zone and they don't carry any IAT sensors so do I need to go to Lexus? I have a sc300 so would that make a difference with my code 61?
Originally Posted by 1JZPWRD
Boom. Beat me to it.
Thanks.
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Old 09-03-13, 11:24 AM
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I just sent video to 2 other members via text and they also confirmed that it's showing code 61.
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Old 09-03-13, 01:21 PM
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Originally Posted by Brianmoss
I did search and nothing came up thats why i posted. By main o2 do you mean the down stream sensor after the cat or is it one of the two on the manifold that are my upstream ones? I went to auto zone and they don't carry any IAT sensors so do I need to go to Lexus? I have a sc300 so would that make a difference with my code 61?
https://www.clublexus.com/forums/mai...code-21-a.html

Originally Posted by Brianmoss
I just sent video to 2 other members via text and they also confirmed that it's showing code 61.
Yeah, was saying that the code isn't included in the code lists around these forums.
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Old 09-03-13, 02:57 PM
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the IAT is built into the maf.
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Old 09-03-13, 06:54 PM
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Code 61 is #2 speed sensor located at the rear of the transmission.
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Old 09-14-13, 01:42 PM
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Originally Posted by Brianmoss
Code 61 is #2 speed sensor located at the rear of the transmission.
So I replaced the speed sensor and reset the ecu and 5 min later blinking OD light. Still have code 61 does anyone know why it's still showing my code even after I replaced it.
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Old 09-14-13, 02:59 PM
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Ecu could be going bad. Only takes like 15 minutes to pop it open and look at it. Small amount of time to save hair pulling sometimes.
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Old 09-14-13, 03:25 PM
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Originally Posted by Vrank
Ecu could be going bad. Only takes like 15 minutes to pop it open and look at it. Small amount of time to save hair pulling sometimes.
I just purchased a rebuilt ecu last month so I'd hope that it wouldn't have gone bad already.
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Old 09-15-13, 08:42 AM
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I heard code 61 could also be a bad shift solenoid. Based off of another thread, if your trans feels a little rough.
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Old 09-15-13, 09:41 AM
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Originally Posted by SC400slide
I heard code 61 could also be a bad shift solenoid. Based off of another thread, if your trans feels a little rough.
Code 62, 63 and 64 are the solenoids.
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Old 09-18-13, 11:00 AM
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Did you replace the right speed sensor?

Transmission OBDI Diagnostic Codes

42 - No. 1 speed sensor signal malfunction

46 - Open or short circuit in no. 4 solenoid valve

61 - No. 2 speed sensor signal malfunction

62 - Open or short circuit in no. 1 solenoid valve

63 - Open or short circuit in no. 2 solenoid valve

64 - Open or short circuit in no. 3 solenoid valve

67 - OD direct clutch speed sensor signal malfunction

68 - Short circuit in kick-down switch
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Old 09-18-13, 04:59 PM
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Originally Posted by Ali SC3
Did you replace the right speed sensor?

Transmission OBDI Diagnostic Codes

42 - No. 1 speed sensor signal malfunction

46 - Open or short circuit in no. 4 solenoid valve

61 - No. 2 speed sensor signal malfunction

62 - Open or short circuit in no. 1 solenoid valve

63 - Open or short circuit in no. 2 solenoid valve

64 - Open or short circuit in no. 3 solenoid valve

67 - OD direct clutch speed sensor signal malfunction

68 - Short circuit in kick-down switch
Originally Posted by Brianmoss
Code 61 is #2 speed sensor located at the rear of the transmission.
Originally Posted by Brianmoss
Code 62, 63 and 64 are the solenoids.
...........
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