Climate control codes 31 & 42 - TCCoA Forums
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post #1 of 1 (permalink) Old 01-15-2004, 11:46 PM Thread Starter
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Climate control codes 31 & 42

Did the self-test on my 94 and got codes 31 and 42. What do these mean? I've been searchign but found nothing about them.

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post #2 of 1 (permalink) Old 01-18-2004, 07:02 AM
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For a 97:
Code 31 means: In-car temperature sensor open.
Code 42 means: Ambient air temperature short.

You can check the resistance of the sensors:
50 deg f to 68 deg f: 37k to 58k ohms
68 deg f to 86 deg f: 24k to 37k ohms.

I will also inspect my vacuum hoses for the ACC system.

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