ACC code 1-21 Heater not working - Saab 9-5 Bulletin Board - Saabnet.com
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ACC code 1-21 Heater not working
Posted by MAK (more from MAK) on Wed, 18 Oct 2006 15:59:49
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Is it true that the ACC code 1-21 will clear itself, though the problem is not fixed, if the problem is not fixed within 20 turns of the key (ignition)? 1 21 has something to do with the grounding-out of a sensor telling the auto climate controll it is warmer in the cab than it truely is. My heat blows cold...even hits me with AC with the temp set at 80. I was getting the ACC code 1-21 until I replaced two fuses. Now, I get 0 on my code but the problem continues. I'm not sure if it is psychological, but the fuses did seem to help. I'm getting hot air for a few seconds before turning cold. Possibly, the fuses cleared the computer code or was it me constantly turning the car on and off between tests? Thanks
posted by 67.182.206...
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