Hot air on driver side vents - Cold on passenger side

wkelly · Oct 2, 2011

I have the same problem, 2007 EXL. I checked the freon and it says it is fine. The air on the passenger side, and rear is very cold. The air on the driver side feels like it is blended? I did the mentioned sensor test, but do not know what the results mean.

1-36
2-34
3-18
4-34
5-C9
6-02
7-C1
8-b9
9-A1
10-00

Any help will be greatly appreciated. Thanks.

echodog · Oct 29, 2011

Hi DV,

Same thing here. It isn't just not blowing cold on the driver's side - it's hot. That tells me that the vent taking air off the heater core is open only on the driver side, while the passenger side and the back blow cold.

I don't get the leak or rock in the condenser cause - there's a condenser for the front and a separate one for the back, right?

Do you know where the driver side temp sensor is and how can I (we) can replace?

Thanks for the help.

echodog · Oct 31, 2011

hot on driver side

#5 reads error.

I'm going to find and replace the Driver Vent Temperature Air Out sensor or whatever else is controling the blending vent

cnn · Oct 31, 2011

echodog said:
#5 reads error.

I'm going to find and replace the Driver Vent Temperature Air Out sensor or whatever else is controling the blending vent

You may want to use some Honda online websites to search for parts location.

echodog · Nov 17, 2011

I looked under the dash and grabbed the first switch attached to a control lever. It activated and closed the heat vent. Then I removed my first fix, which was the grocery bag that I had stuffed in the vent.

cost = zero.

sweaty days because i just don't have the time to get to this stuff anymore = 14.

echodog · Nov 21, 2011

echodog said:
I looked under the dash and grabbed the first switch attached to a control lever. It activated and closed the heat vent. Then I removed my first fix, which was the grocery bag that I had stuffed in the vent.

cost = zero.

Keywords / a/c air hot driver side cold passenger Driver Vent Temperature Air Out sensor

An early warning that this switch is going bad is a popping sound coming from behind the instrument panel when the engine is running.

Options:

1) You can unplug it until you get a replacement (3 screws).
2) Unplug it and set it manually and not bother replacing it.
3) Teach your wife where to kick it to get it to work.

echodog · Dec 5, 2011

driver temperature heat a/c blender door control motor 2006

Options:

1) You can unplug it until you get a replacement (3 screws).
2) Unplug it and set it manually and not bother replacing it.
3) Teach your wife where to kick it to get it to work.[/QUOTE]

My wife didn't want to kick it, so:

79160-SHJ-A01MOTOR ASSY., TEMPERATURE DRIVER1$89.02$89.02 Subtotal$89.02 Sales Tax

$0.00

Shipping Charge

$11.04

Handling Charge

$4.95

TOTAL$105.01

rchang · May 5, 2012

echodog said:
Options:
...
3) Teach your wife where to kick it to get it to work.

[/QUOTE]

Where do you kick it?

killjoyken · May 8, 2012

I'm having the same problem on my 2005 EX-L. Has anyone figured out a fix for this? And does anyone have a list of the codes? I have no idea what C9, E4 or A1 mean.

Thanks.

cnn · May 9, 2012

bigticket said:
Hi:

The driver side vents are blowing hot air and the passenger side are blowing cold air. Both are at Sync and I put it in Auto. It's been like that for a while.

Mine is a 2007 EX-L RES. The dealer called me today and said my AC was low on freon and there seems to be leak but he could not find out.

First...your dealer is a hack, so stay away from them.
- If you have COLD air on pass side, this means your AC system is working fine.
- When you have a differential (hot one side, cold the other side), then one of the "blend door motors" is defective.

Relevant Thread from Honda Pilot:
Gurgling / Grinding from under dash near HVAC...RESOLVED!! - Honda Pilot - Honda Pilot Forums
(BTW...PN for Honda Pilot is 79160-S0X-A01).

Back to your 2007 Ody EXL, it has 2 blender motors (#13 and #14). See pic.
My 2007 Ody LX has only 1 blender motor (#13). See pic.
Replacing the blender motor is easy. See the Honda Pilot thread.

#13 (driver side) is 79160-SHJ-A01
#14 (pass side) is 79170-SHJ-A41

Dirkdaddy · May 9, 2012

OK, what happens (IMHO) is that the refrigerant runs low, and when this happens, it only has enough juice to cool the coil right around the orifice where it comes out. This is on many cars the passenger side. As it goes across to the exit of the coil, there isn't' any cooling left and those vents on that side run warmer.

I'm not just shooting in the dark, I have a beater '00 Oldsmobile Intrigue that has done this twice or more and I always know I'm up for some AC work when it starts happening. Good to not use it anymore at that point and get it checked. On that car I've replaced the condenser twice (once under warranty) and a compressor. Any complaints about the serviceability of the Honda can feel free to attempt to service the Oldsmobile, where the big engine is wedged in there! Had to remove fans, alternator, water pump, battery, tray, etc to remove compressor.

parkprestymom · May 9, 2012

I am having the same type of problem. My AC works when I am driving on the freeway but when I am driving in town and coming to stop lights the driver side AC starts blowing out warm air. These are the codes that I got. Any help would be appreciated.
1.32
2.30
3.01
4.31
5.c9
6.03
7.d2
8.69
9.A1
10.00

bmoser77 · May 24, 2012

I have a 2009 EXL Odyssey that just is doing the same thing (warm air on drivers side, cold on passenger). I checked freon levels and everything good. I looked at blender motors and they seem to be operating normally. By that I mean the move as I increase or decrease the temp on each respective side. Both sides appear to behave the same yet the air temps are different. Any other suggestions.

bmoser77 · May 25, 2012

I took the motor off tonight and manually moved the levels - problem still occurred so I'm convinced it's not the motor. it must be inside = lots of money.

stevehuff · May 31, 2012

Driver A/C warm, pass cool, blend motors both OK?

I'm having a similar problem on a 2006 EXL. The driver side blend door motor is easy to view. It is just above the accelerator and has a green plug. The passenger side is mostly obscured, but you can see the white plastic pieces move as you change the temperature setting on the dashboard control unit. Here is my drivers side motor, with the problem of warm A/C air, at the Lo setting:

I watched the motors work on both the driver and passenger sides. What's interesting is that when changing the temperature setting from Lo to 74, the motors do nothing that I can see. But the vent air does get warmer. Once the temperature is changed from 74 to 75 they make a large movement, and then smaller movements as the temperature setting increases to Hi. I temporarily closed/blocked the passenger side vents to test the theory in a few earlier posts that the cold air is all ejected on the passenger side, but that didn't help.

Testing the sensor inputs shows sensor 5 at C9 and sensor 6 at 03, so I do believe there's a problem with the driver's air mix opening. But since both motors work the same, any ideas where the problem is? Does the motor do more than I can see?

MESINCITY2 · May 31, 2012

same thing here in Las Vegas...2006 Ody Touring RES + NAV...approx 109k miles...American Honda rep stated AC components covered by HondaCare...we have 8yr/120k...have not taken it in yet...we shall see what the dealer tells us...need to get i knocked out & resolved before the warranty is up!

stevehuff · May 31, 2012

Good to know I have company... unfortunately I am out of warranty at 110K and no Honda Care. Will be very interested in your solution. I took the drivers blend motor off, fully opened and closed the mechanism it controls, and still no cold air on the drivers side when AC is running. Drivers and passenger heat works 100%. Arrgh!

One other test I performed was the climate control self-diagnosis. It did not find any errors.

stevehuff · Jun 2, 2012

Found the culprit - low refrigerant. We had a hot day today and while the drivers side was still hotter air than passenger or rear cabin, all areas of the cabin were blowing hot air when AC was on. Shop added 22 ounces of R-134A. Interestingly, the sensor inputs still show a difference between #5 and #6... sensor 5 at C8 and sensor 6 at 03.

MESINCITY2 · Jun 4, 2012

FOLLOW-UP - WARM AIR DRIVERS/COOL AIR PSGR - LAS VEGAS...

Same story here...took in to Honda...A/C components would be covered by HondaCare, but dealer only added refrigerant, and apparently, it works well enough to keep my wife satisfied...I still don't buy the story entirely..hoping this does not re-occur AFTER the warranty's up...have not checked the sensor inputs yet and I am willing to bet they will be inconsistent between the left and the right...anyhow, that's where we're at...the service guy this time did a bit of extra work for us, covered by HondaCare as well...overall, a better than expected result form a trip to the dealer!

cnn · Jun 4, 2012

I may be wrong but it seems to me that this problem (hot one side, cold the other side) only happens in EX, Touring models.
LX seems to be spared from this problem.

Hot air on driver side vents - Cold on passenger side

wkelly

echodog

echodog

cnn

echodog

echodog

echodog

rchang

killjoyken

cnn

Dirkdaddy

parkprestymom

bmoser77

bmoser77

stevehuff

MESINCITY2

stevehuff

stevehuff

MESINCITY2

cnn

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