PO974 and PO977

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68Malibu383

Senior Member
Joined
Apr 18, 2015
Posts
145
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Ram Year
2015
Engine
426
I have a 2019 1500 Classic Hemi. 78K miles. Very little towing and I've driven it very gently since I got it with 25K miles.

I parked the truck for about five minutes, started engine and put trans into reverse and nothing happened. Check engine light came on before or right after I tried to back up. I shut off engine, re-started, then went into gear and drove fine for the 15 minute drive home. Never had any issues with the trans shifting.

Codes are below. Searching this site and web did not give me anything useful.

PO974 = Shift Solenoid “A” Control Circuit High

PO977 = Shift Solenoid 'B' Control Circuit High

Anyone have an info on these? The only thing that is unusual is that my daughter is driving with a learners permit and sometimes she will put truck in park before fully stopping - almost stopped, but not dead stop. Twice, a warning came up on the dash. Not sure if codes are related to that or not.
 
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