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Discussion Starter #1
I am having trouble with my 2015 Forester (~61K miles).

Check engine lights came on out of nowhere one morning. According to my Automatic Pro dongle, it is telling me these check engine light codes:

U0122
U0100
U0155

We have had a battery replaced recently from AAA after getting the same codes & car failing to start. Now it’s a new premium battery (car’s 3rd battery), and getting these codes again.

Not sure what can be the issue causing all this?
Help please?
 

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2015 Touring XT CVT
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I have a 2015 XT myself, and just got this code too. All warnings and alerts lit up and gauge RPM/MPH/Fuel dropped to zero and engine drasticly droped to a crawl. My only fault code is the U0100. When you repaired yours was the ECM the only issue or was it more complex?
 

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2015 Forester XT Premium
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I have a 2015 XT myself, and just got this code too. All warnings and alerts lit up and gauge RPM/MPH/Fuel dropped to zero and engine drasticly droped to a crawl. My only fault code is the U0100. When you repaired yours was the ECM the only issue or was it more complex?
Kyle, it looks like I got the same thing you did. (U0073, U0100, and U0122) Now it won’t start.
What was your prognosis?



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