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shift/timing solenoid P0785... 04' S60 2.4T 185,xxx

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MaxPower25
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Year and Model: 2004 S60 2.4T
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MaxPower25

shift/timing solenoid P0785... 04' S60 2.4T 185,xxx

Post by MaxPower25 » Tue Feb 09, 2016 7:41 pm

first of all - 2004 Volvo S60 with a 2.5L Turbo 2 whl-dr 183,xxx miles... Hi, thank you for reading... my car drove great shifted fine, but once it heated up (especially in park with car running) it would shift up and down extremely hard but only in 1st, 2nd and 3rd gear tho. It would NEVER having shifting probs in the higher gears. often it would go away after about 20 min of it constantly doing it. well about 30 min ago it started to do the hard shifting and all of a sudden the dash lit up with "service trans" light and also check engine. And now the car feels like its stuck in 3rd or 4th gear. It is very sluggish when driving from a stop (kinda like if it were a stick shift and I was trying to accelerate from a stop in 3rdgear). The car drives excellent once it gets up to a higher rpm. and also the little lcd window on the dash that says what gear i'm in just has a little " - " instead of a "D"... when I hooked up the OBD it gave P0785, P0700 and P2407 (which I already knew about)... So now I could really use some assistance, I have NO Idea what to do. I do all my own maintenance and repairs on all the cars ive owned, but have never ran into transmission problem in all my years.
Last edited by matthew1 on Tue Feb 09, 2016 7:59 pm, edited 1 time in total.
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JudgeRat
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Re: shift/timing solenoid P0785... 04' S60 2.4T 185,xxx

Post by JudgeRat » Wed Feb 10, 2016 4:37 pm

Here's what I show for the codes you mention:

P0700 -- ECM‑530D -- Diagnostic trouble code (DTC) in another control module
P0700 -- Transmission Control System Malfunction
P0700 -- ECM-5100 -- Malfunction indicator light TCM -- Faulty signal
P0700 -- ECM-5130 -- Malfunction indicator light TCM -- Faulty signal
P0700 -- ECM-513B -- Malfunction indicator light TCM -- Signal missing
P0785 -- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
P2407 -- ECM‑431D -- Leak diagnostic unit Signal too high
P2407 -- ECM-436B -- Leak diagnostic unit Signal missing

Now, I'm not a tranny guy either; I've never worked on an automatic, but I rebuilt a couple of manuals back in the way back. If I understand it correctly, though, it seems you've blown out that 3-2 Shift Solenoid and it will need replacing. Me? I'd say take it to a reputable shop if you aren't really comfortable with transmission repairs/rebuilds, but if you are game, I'm betting there are a couple of real "gear-heads" here on the forum that would be willing to talk you through doing it yourself.
"Molly" - Black 2004 2.4L i5 (non-turbo) T5 Auto FWD P2 Volvo s60 w/all options

Old-school race guy: "Brakes 1st, then steering, tires, wheels, & suspension, only then engine and drive-train. No sense making it go if you can't stop & steer properly...Safety first people!"

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