P0768: Shift solenoid D electrical circuit fault
Shift solenoid D electrical fault
Severity: Severity not verified — if the car runs badly, have it inspected
The two sources give the code definition but no severity rating, so the urgency is not verified. A shift fault can leave the car in a fixed gear, so have it checked soon.
P0768 in short
P0768 means the computer found an electrical fault in the circuit of shift solenoid D, one of the valves that controls gear changes. Likely causes are the solenoid, its wiring or connector, low or dirty fluid, or rarely a control module. Shifting may be harsh or erratic, so get it checked.
Shift solenoid D is an electrically operated valve in the automatic transmission that directs fluid to change gears. The computer watches its circuit, and an electrical fault sets P0768.
TroubleCodes.net describes the symptoms as not shifting, harsh or erratic shifts and high engine rpm. Its causes include an open or short in the circuit, bad grounds and a failed solenoid.
Most likely causes
These are general causes for this code across vehicles. None is specific to one make or model.
Cause 1: Low, dirty or wrong transmission fluid
Common general cause- Why it ranks here
- TroubleCodes.net lists low or dirty fluid among the first causes for a shift fault and it is the cheapest thing to check.
- What would change this
- Rises if the level is low or the fluid is dark or burnt. Falls if level and condition are correct.
Cause 2: Wiring, grounds or connector fault in the solenoid circuit
Common general cause- Why it ranks here
- TroubleCodes.net lists wiring, poor connections and bad grounds as probable causes of the solenoid circuit codes.
- What would change this
- Rises if a wire is chafed or a connector is corroded. Falls if the circuit tests normal.
Cause 3: Faulty shift solenoid
Common general cause- Why it ranks here
- TroubleCodes.net lists the shift solenoid itself as a probable cause once the wiring tests sound.
- What would change this
- Rises if the solenoid fails a resistance or command test. Falls if it responds correctly.
Cause 4: Transmission or engine control module fault
Possible — needs testing- Why it ranks here
- TroubleCodes.net lists the control module as a cause but after the wiring and solenoid, so it ranks last.
- What would change this
- Rises if wiring and solenoid test good and the fault stays. Falls if either is faulty.
What to test first
Start at step 1. Each result tells you what it means and where to go next.
Step 1: Read every stored code and freeze-frame data with a scan tool that can read the transmission module.
IfOther transmission codes are stored
It meansWork from the first code stored; one fault can set several.
IfIt is the only code
It meansCheck the fluid and wiring next.
Step 2: Have the transmission fluid level and condition checked following the maker's procedure.
Warning:Many transmissions are checked hot with the engine running, and some are sealed with no dipstick. Let a shop do this.
IfFluid is low, dark, burnt or the wrong type
It meansFluid is the first suspect.
IfFluid is fine
It meansHave the circuit tested.
Step 3: Have the solenoid circuit tested between the solenoid and the control module for opens, shorts and high resistance.
Warning:Testing solenoid circuits means working at the transmission connector and sometimes dropping the pan, with hot fluid and a moving drivetrain risk. Let a shop do this.
IfA damaged wire or corroded connector is found
It meansRepair it.
Points to: Wiring, grounds or connector fault in the solenoid circuit
IfThe circuit is sound
It meansThe part itself is next.
Symptoms
- Check engine light
- Harsh or erratic shifts
- Not shifting
- High engine rpm
How to fix
Step 1: Have a shop scan the transmission module for every stored code before any parts are replaced.
Step 2: Ask a dealer whether a transmission software update or bulletin applies to your VIN.
On your vehicle
HyundaiYour car
2012–2016 · Equus
Supported by vehicle dataHyundai bulletin 5NP-W7J6Y-11 covers automatic transmission solenoid and sensor replacement for several codes including P0768. Whether it is still current is not verified.
2012–2016 · Genesis
Supported by vehicle dataHyundai bulletin 5NP-W7J6Y-11 covers automatic transmission solenoid and sensor replacement for several codes including P0768. Whether it is still current is not verified.
2013–2016 · Genesis Coupe
Supported by vehicle dataHyundai bulletin 5NP-W7J6Y-11 covers automatic transmission solenoid and sensor replacement for several codes including P0768. Whether it is still current is not verified.
5NP-W7J6Y-11Status unverified
Automatic transmission solenoid and sensor replacement for P0768 and related codes
2012–2016equus, genesis, genesis-coupe · issued · NHTSA 10089604
Hyundai bulletin about automatic transmission solenoid and sensor replacement for P0741, P0743, P0748, P0753, P0758, P075A, P0763, P0768, P0773, P2709 and P0841. Only the NHTSA summary was read.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Related codes
P0768 questions
Does P0768 always need a new solenoid?
No. TroubleCodes.net lists fluid, wiring and grounds ahead of the solenoid, so those are checked first.
Sources and review
- P0768, P0769, P0771, P0773 and P0781 code pages
- On-Board Diagnostic Trouble Codes (generic code title list)
- 5NP-W7J6Y-11: Automatic transmission solenoid and sensor replacement for P0768 and related codes
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error