Loss of Heat

95greensvx · #1 03-18-2009, 06:18 AM

I tried flushing the heater core again and am still having the same problem. One thing that seems odd is that when I turn the heat on at max flow it is warm initially for a few seconds then goes right to cold. I have code 15 coming up when I check the codes and I do not know exactly what code 15 is, anyone know what this is and where it is located?

svxistentialist · #2 03-18-2009, 07:04 AM

Quote:

Originally Posted by 95greensvx

I tried flushing the heater core again and am still having the same problem. One thing that seems odd is that when I turn the heat on at max flow it is warm initially for a few seconds then goes right to cold. I have code 15 coming up when I check the codes and I do not know exactly what code 15 is, anyone know what this is and where it is located?

Code 15 of the aircon diagnostic routine means the refrigerant sensor circuit is inoperative or shorted out.

Check the system details here: http://www.subaru-svx.net/photos/files/How-To/14349.pdf

Assuming it is a bad sensor I would consider this good news. At least you know what is the problem and a new sensor should fix it.

Joe

radarwhiz · #3 03-19-2009, 02:45 AM

Quote:

Originally Posted by svxistentialist

Code 15 of the aircon diagnostic routine means the refrigerant sensor circuit is inoperative or shorted out.

Check the system details here: http://www.subaru-svx.net/photos/files/How-To/14349.pdf

Assuming it is a bad sensor I would consider this good news. At least you know what is the problem and a new sensor should fix it.

Joe

I've been following this thread cause I'm having a similar problem. The how-to link here says it's for '95-96, is it the same for '94 too?

svxistentialist · #4 03-19-2009, 04:06 AM

Quote:

Originally Posted by radarwhiz

I've been following this thread cause I'm having a similar problem. The how-to link here says it's for '95-96, is it the same for '94 too?

Elazar my cars have the Japanese all-automatic climate control version, rather than the "button" model on the US cars.

Just the same, the underlying system for heating/cooling is fundamentally the same for all SVXes. In other words the fault codes and the parts numbers for all models will be the same, with the obvious difference that the control module is more sophisticated in the Euro/Japanese cars.

In answer to your question if you have pulled Code 15 from the aircon diagnostics on your '94, it will be the same thing causing the problem, either the refrigerant temp sensor or the wiring to it.
[edit] or possibly the auto amplifier if both above check OK. Scroll down and read the troubleshooting for Code 15 [/edit]

Joe

radarwhiz · #5 03-19-2009, 06:42 AM

Ok thanks for the answer Joe. My problem is no heat or a/c at all so I was thinking probably just a thermostat (in-vehicle sensor, i guess it's called) or something like that. But when I get the chance I'm gonna run through the troubleshooting in that how-to so just making sure it will be the same for my '94.

Elazar