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Squirel138 Squirel138 is offline
New Member
Posts: 1
Join Date: Jun 2021
Car: 2011 550i
Default 121001 TMAP sensor, short circuit to B+ - 06-24-2021, 04:38 PM

I keep getting that code under full throttle. I have Alpina turbos and thought it was due to the turbos boosting over 21.5 psi’s so I changed to the 3.5 bar and made the adjustments in the JB4. No change, same DTM…. It does it with the JB4 connected and without it connected. Only under full throttle. Could it be an electrical issue? Where would I start to trouble shoot?
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