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Old 05-12-2020, 07:25 PM   #1
Secretagentmims
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Member#: 513638
Join Date: Apr 2020
Default LIMP MODE, CEL codes P2102 and P0606 don't clear

2017 STI USDM 6MT
Catback Exhaust
Cobb SF Intake
Stage 1+ tune ACN91 NWG map
Mudflaps

Hey guys,

I can't clear P0606 and P2101 CEL codes with my Accessport. I don't think anything's electrically busted - MAYBE a fuse or a relay but I can't seem to find any information about the circuit...does anyone know which fuse/relay to check?

Here's what happened to me yesterday: Tried starting the car. Unsuccessful. Wiggled the battery terminals. I notice a lot of corrosion but I clean it up and get the car started. I get CEL code P0606. This code goes away after a little while. I get to Autozone and buy an add-a-fuse kit, 5A fuses, and new battery terminal rings (mine were corroded, rusty, and one nut broke off...). I go home, install the radar detector hardwire kit with an add-a-fuse to an empty spot in the fuse box and change out the battery terminals. Car starts, no CEL, no problem.

TODAY: I start the car and I am hit with P0606 and P2101 codes. P2101 won't clear, it is the throttle body control circuit low voltage code. I then noticed I left my dome light on ALL night and I suspect this caused the CELs. I am considering flashing back to factory tune then back to Cobb's tune per a friend's recommendation.

Do you think this will work, what do you recommend I test/do next, or should I go to a shop and let them figure it out

Edit: Youtubers say the limp mode can be fixed by allowing the throttle body to recalibrate (dc battery and reconnect, idle, start, off, idle, start, idle) but idk if this will clear the CEL...
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Last edited by Secretagentmims; 05-12-2020 at 10:06 PM.
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Old 05-15-2020, 09:36 PM   #2
Secretagentmims
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Member#: 513638
Join Date: Apr 2020
Default

Bump and edit:

Replaced the Throttle Electronic Control Relay but no dice. Took it to a local shop, they said take it to a local shop specializing in electrical because they believe the issue lies in the wiring or a bad harness somewhere.

Thoughts? Recommendations? Help!
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Old 11-25-2021, 01:47 AM   #3
polista
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Join Date: Nov 2021
Default issue

i have also the same issue, car went on limp mode.

any resolution to your issue?
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