EATC code 21? - TCCoA Forums
 
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post #1 of 5 (permalink) Old 09-02-2016, 02:30 PM Thread Starter
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EATC code 21?

Does anyone know what this code means?

I had code 24 - replaced blend door actuator.

Got codes 21, 24.

Checked part number on box and looked it up, for manual climate control only.

Removed new actuator, and swapped new gears into old oem actuator.

Now I am still getting code 21 when I run the diagnostic. But code 24 is gone.

I have exhausted the search functions on this forum and Google. And cannot find a definition for what code 21 means.
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post #2 of 5 (permalink) Old 09-02-2016, 05:02 PM
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What year? The Ford info I'm looking at show no 21 only 41 or 31, both of which at Temp sensors Open (ambient and In Car).

If all else fails get a bigger hammer!

93 SC Tbird
MPII w/ Plenum,90mm MAF, 85mm TB, 40# Injectors, 255 lph FP, Double IC w/fan, SCT Chip (Tuned by Jerry),3/4" Raised Top, F52-TT TC, SilverFox AOD 550, SPT-R VB
96 1/2 XR7 Sold and Salvaged
93 5.0 Tbird
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post #3 of 5 (permalink) Old 09-02-2016, 07:54 PM Thread Starter
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1997 Ford Thunderbird 3.8L. I have heat again, but just trying to figure out why I have this code now
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post #4 of 5 (permalink) Old 09-03-2016, 07:08 AM
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21 still is not listed what are the symptoms?

If all else fails get a bigger hammer!

93 SC Tbird
MPII w/ Plenum,90mm MAF, 85mm TB, 40# Injectors, 255 lph FP, Double IC w/fan, SCT Chip (Tuned by Jerry),3/4" Raised Top, F52-TT TC, SilverFox AOD 550, SPT-R VB
96 1/2 XR7 Sold and Salvaged
93 5.0 Tbird
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post #5 of 5 (permalink) Old 09-14-2016, 01:52 PM Thread Starter
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Not really sure to be honest, heater seems to be working fine once again so I'm not going to sweat it.
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