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Old 03-30-2018, 07:28 PM   #1
sirius815
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Default Error code 121 - Hoehenadaption Fehler

Anybody ever come across this error? It's the only thing keeping my CEL on!
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Old 03-31-2018, 02:17 AM   #2
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You might be missing a number on the code.
Lots of codes start with 121...
Maybe your code is a 121x?
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Old 03-31-2018, 02:18 AM   #3
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That's the code INPA gave me.

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Old 03-31-2018, 02:20 AM   #4
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It translates to “height adaptation error”
I’ve not heard of it.
Wish I could help....
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Old 03-31-2018, 02:22 AM   #5
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Yes, that is correct. I'm sure it has to do with air density more than anything which may point to the MAF. I am under the impression a bad MAF would throw different codes and have poor off-idle performance as well.

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Old 03-31-2018, 02:25 AM   #6
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Do you have an m42 or m44?
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Old 03-31-2018, 02:25 AM   #7
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M44

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Old 03-31-2018, 02:29 AM   #8
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I’ve got an extra maf for an m42.
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