P0931: Gear Shift Lock Solenoid/Actuator Control Circuit A High

The control module reads a voltage on shift lock circuit A that is higher than the commanded state allows. FCA documents the code directly: in recall 16V-249 the Jefferson North plant found 2016 Jeep Grand Cherokee (WK) vehicles with active or stored P0931-00 whose selector would not release from Park. The cause was a badly crimped terminal on the BTSI solenoid harness from shifter supplier GHSP; FCA replaced the gear selector and warned that losing the solenoid could leave the lever locked in Park or Neutral. So a poor connection, not only a short to battery, can show up as High. P0930 is the low, P0928 the open fault of circuit A; P092D is the high fault on circuit B.

Symptoms

• Selector lever will not release from Park
• Lever may lock in Park or Neutral unexpectedly after stopping
• Fault comes and goes with vibration or temperature

Most likely causes

• Poorly crimped or loose terminal on the shift lock solenoid harness (FCA recall 16V-249)
• Control wire shorted to a supply voltage
• Open shift lock solenoid coil seen as high voltage by a low-side driver

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the fluid level and condition according to the manufacturer
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
3. Check the transmission connector
4. Read the data with a transmission-compatible scanner
5. Measure the solenoid valve circuit
6. Leave opening the transmission to a specialized repair shop

Good to know

• Repair difficulty: medium

What each character of P0931 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• 9: Transmission
• 31: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0931?

Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.

What causes code P0931?

The most common causes are: poorly crimped or loose terminal on the shift lock solenoid harness (FCA recall 16V-249); control wire shorted to a supply voltage; open shift lock solenoid coil seen as high voltage by a low-side driver.

Related codes

• P0928Gear Shift Lock Solenoid/Actuator Control Circuit A/Open
• P0929Gear Shift Lock Solenoid/Actuator Control Circuit A Range/Performance
• P0930Gear Shift Lock Solenoid/Actuator Control Circuit A Low
• P092DGear Shift Lock Solenoid/Actuator Control Circuit B High
• P0573Brake Switch A Circuit High

Sources

• static.nhtsa.gov: RCLRPT 16V249 8794
• static.nhtsa.gov: RCRIT 16V249 3971
• law.cornell.edu: 13 CCR 1968.2

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.