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Old 09-06-2012, 05:39 AM
 
Location: Indianapolis
3,675 posts, read 7,809,845 times
Reputation: 2333

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On our 05 Odyssey, the front air conditioner blows warm air when the rear air is turned off. The blower works fine, everything seems to be fine, the air is just not cold. But once I turn the rear air unit on, the front unit as well as the rear unit start blowing cold air... Has anyone else experienced this issue? Any ideas would be appreciated.... Thanks!
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Old 09-06-2012, 06:50 AM
 
Location: WFNJ
1,035 posts, read 2,404,056 times
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I don't have this issue, bring it to a trusted mechanic or dealer.
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Old 09-06-2012, 07:43 AM
 
14,780 posts, read 35,789,201 times
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Quote:
Originally Posted by X-Greensboro Resident View Post
On our 05 Odyssey, the front air conditioner blows warm air when the rear air is turned off. The blower works fine, everything seems to be fine, the air is just not cold. But once I turn the rear air unit on, the front unit as well as the rear unit start blowing cold air... Has anyone else experienced this issue? Any ideas would be appreciated.... Thanks!
This is actually a pretty common problem on Odyssey's. It's a faulty air-mix motor or an issue with the 'doors' in the HVAC system. There is a diagnostic function built-in to the HVAC system to help you figure out any problem:

Quote:
HOW TO RETRIEVE A DIAGNOSTIC TROUBLE CODES
The climate control unit has a self-diagnosis function. To run the self-diagnosis function, do the following:

1 Turn the Ignition switch ON (II).

2. Press the AUTO button and then press the OFF button. Continue to hold both buttons down for 1 minute.

If there is any abnormality in the system the temperature Indicator will light up the segment (A through N) corresponding to the error. The temperature indicator will then alternate every second between displaying "88" (all segments lit) and the error code segment (A through N).

NOTE:
The system will only display the DTC when the AUTO and OFF buttons are pressed if you release the buttons the display will go blank. To return the display, simply press the AUTO then the OFF buttons again.

To determine the meaning of the DTC, refer to the DTC Troubleshooting Index . If there is no abnormality the segment will not light up.

Cancelling the Self-diagnosis Function

3. Turn the ignition switch OFF to cancel the self-diagnosis function. After completing repair work run the self-diagnosis function again to make sure that there are no other malfunctions.
If you do a quick google search on "Odyssey air-mix motor" you will turn up dozens of references and sources for people that have the same issue. Sometimes they get stuck so they only blow hot. Sometimes they only blow cold. Sometimes the front is cold and the rear is hot, etc.
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Old 09-06-2012, 09:40 AM
 
Location: WFNJ
1,035 posts, read 2,404,056 times
Reputation: 1053
Thanks NJGoat, I didn't even know that.
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Old 09-06-2012, 05:44 PM
 
Location: Indianapolis
3,675 posts, read 7,809,845 times
Reputation: 2333
Quote:
Originally Posted by NJGOAT View Post
This is actually a pretty common problem on Odyssey's. It's a faulty air-mix motor or an issue with the 'doors' in the HVAC system. There is a diagnostic function built-in to the HVAC system to help you figure out any problem:



If you do a quick google search on "Odyssey air-mix motor" you will turn up dozens of references and sources for people that have the same issue. Sometimes they get stuck so they only blow hot. Sometimes they only blow cold. Sometimes the front is cold and the rear is hot, etc.
Great post as usual. I had no clue about this! Thank you very much!! Cheers!
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Old 09-08-2012, 11:02 AM
 
Location: Indianapolis
3,675 posts, read 7,809,845 times
Reputation: 2333
I have tried this several times now NJGoat with no luck... I am unable to get a code at all! Any other ideas?
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