HVAC Error Code

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Jun 30, 2014 | 07:44 PM

ronrc18

Thread Starter

Cruising

Joined: Jan 2004

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From: San Jose CA

HVAC Error Code

I have a 98 C5. I can't find any information on an error code.

99 HVAC B0393H

Any ideas on what is error code?

Thanks,

Ron

Jun 30, 2014 | 09:28 PM

martysauto

Drifting

Joined: Sep 2009

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From: cinnaminson n.j.

St. Jude Donor '14

It's not listed in alldata and their info is supposed to be identical to the factory service info. Maybe someone with the factory service manuals can look it up.
Meanwhile you may want to double check it.

Jul 1, 2014 | 12:48 AM

ronrc18

Thread Starter

Cruising

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From: San Jose CA

Check it multiple times but it still comes up the same. First I thought I mixed up the "9" for a "6", no it is a "9"! Cleared the code several times just to make sure!

Anyone have any ideas if there is secret list of codes?

Thanks,

Ron

Jul 1, 2014 | 09:57 AM

mrr23

Melting Slicks

Joined: Jul 2004

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From: orlando florida

St. Jude Donor '15

These are all codes associated with the hvac. Seems maybe your display is goofing up and a led isn't functioning correctly

99-HVAC - Heater, Ventilation, Air Conditioning*
B0332 Outside Air Temp Sensor Short to GND*
B0333 Outside Air Temp Sensor Open*
B0337 Inside Air Temp Sensor Short to GND*
B0338 Inside Air Temp Sensor Open*
B0348 Sunload Temperature Sensor Open*
B0361 Left Actuator Feedback Short to GND*
B0363 Left Actuator Feedback Open*
B0365 Right Actuator Feedback Short to GND*
B0367 Right Actuator Feedback Open*
B0441 Left Actuator Out of Range*
B0446 Right Actuator Out of Range*
B1016 Loss of Communications with PCM*
U1064 Loss of Communications with BCM*
U1096 Loss of Communications with IPC*
U1255 Serial Data Line Malfunction*

Jul 1, 2014 | 11:19 AM

dadaroo

Le Mans Master

Joined: Mar 2011

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From: Columbia SC

Disconnect the negative battery cable for about 5-10 minutes and try again. When you pull the code again do it before you shut the engine off and see if it does the same and if it shows H, H and C, or just C.

DIC code lists don't show it but not home to double check my FSM.

Are you actually experiencing any HVAC issues you can detect?

Jul 4, 2014 | 12:04 AM

ronrc18

Thread Starter

Cruising

Joined: Jan 2004

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From: San Jose CA

I disconnected the ground battery cable and let the car sit for longer than 10 minutes and looks like the computer was reset/no power.

Only getting one error "B0441H". Looks like an actuator, what is an actuator?

Jul 4, 2014 | 07:58 AM

dadaroo

Le Mans Master

Joined: Mar 2011

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From: Columbia SC

Your code is for the Driver side actuator and the code says the detected "movement range" of operation is out of spec (either too high or low). There are 2 actuators with one for the driver and one for the passenger side.

They are motor driven and are used to blend incoming air. Incoming air goes thru the A/C evaporator and then the actuators adjust how much air goes around or thru the heater core.

Your problem is either a "real" problem that needs to be fixed or the system may just need to be "reset"

Try this first:

Re-Calibrating Actuators

Use the following steps to perform the calibration update:

1. Turn OFF the ignition.
2. DO NOT disconnect the battery
3. Remove the fuse for the HVAC Control Module (fuse #27 in the passenger fuse box).

Important!
The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.

3. Wait 60 seconds.
4. Install the fuse.

Some people say they had to do this several times to get it to reset. If this does not work you will need to fix the issue. The driver side is the hardest one to access, naturally.