P0785 and p0700 - S60 Volvo Cars & Trucks

P0700 is a generic transmission code

P0785 is a shift solenoid malfunction in the transmission probably 3-2 downshift. Someone will have to spend some time checking the decision tree for the P0785 code.

Your code is a PO785 is a SHIFT TIMING SOLENOID BANK A wich is a transmission code nothing to do with your smog failure so go to your local auto store and buy this product it's called guaranteed to pass this will get u buy the bs emissions test for 10 bucks regards Chris

I think you have no power to transmission on terminal E
pink wire because it a common problems fuse trans 10amp blown or wire pink cut
hope it helps

code p0740 refers to torque converter clutch (TCC) solenoid --circuit malfunction Causes---Wiring---TCC solenoid--- ECM/TCM
Code p2716 refers to transmission fluid pressure(TFP) solenoid D-electrical Causes---Wiring---TFP solenoid.
Code p0785 refers to shift/ timing solenoid circuit malfunction Causes---Wiring---shift/timing solenoid---ECM?TCM The common fault here appears to be the TCM ( transmission control module) have it check out..

The P0700 means Transmission Control System (MIL Request), and the P0785 means Shift/Timing Solenoid.
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P0785: Shift/Timing Solenoid Malfunction

- Low transmission fluid level
- Dirty transmission fluid
- Faulty shifting solenoid valve
- Shifting solenoid valve harness or connectors
- Shifting solenoid valve circuit is open or shorted

PO785 is a shift solenoid malfunction code. Could be just solenoids that need replacement. If it has the GM trans, it's a big job as solenoids are under side cover of trans axle. Sub frame removal required. Pete

P0785 - Shift/Timing Solenoid Malfunction (3-2 shift solenoid is not working properly)
P1618 - Diagnostic Trouble Code (DTC) in another control module (in this case, in the Trans Module)

Flush the transmission, get any software upgrades available, reset the adaptors and try it, nothing to lose.

If it doesn't work you will need a transmission. Solenoids are internal, that's what controls the shifts.
They could be faulty or the valve body but one should always do what I said once, if it doesn't fix it, you're looking at a transmission.

The resetting of adaptors is crucial if you update the software. It's basically wiping the memory of the TCU (transmission controller) and teaching it how to shift properly again.

Also could check this TSB...

The reason why I ask, is because anytime there are MULTIPLE transmission solenoid codes, its usually the result of a failed ignition switch. However, since only two codes appeared and were one at a time, I think at this point, its unlikely the result of an ignition switch failure.

P0785 is for the 3-2 downshift solenoid. Either the solenoid is faulty, or something got damaged while the 1-2 solenoid was being replaced. (connector knocked loose, wire rubbing on pan or valvebody, etc...).

The 3-2 solenoid is #394 in the picture below, which is at the opposite end of the 1-2 solenoid.



P0785 is for the 3-2 solenoid and that is 394 in the picture. Is it likely to fix it? yes, but of course I cannot guarantee that it will, sitting behind my computer and never seeing the vehicle.

Hope this helps.

Depends on how handy you are. You'll need to drop the tranny pan and you'll see them all in the valve body. If you're going to go through the effort you might as well change all of them at the same time.

Here's a diagram:

http://z.about.com/d/autorepair/1/0/p/D/78407452.gif

Code P0785 is "Slipping in first gear", the solenoids are the same if the connector plugs in. You need to find the cause of the excessive slip, it may be the torque converter, in any event a code like this takes time to set, a certain number of "drive cycles" we call it in the trade, this may take days or in some cases a week to reset the code. You will need a Scan tool to continue the testing and dertermine the cause of the code P0785. Hope this helps to find the root cause of the fault code, email if you have any further questions.