P0928: Gear Shift Lock Solenoid/Actuator Control Circuit A/Open

The module that drives the shift lock (brake transmission shift interlock, BTSI) sees no continuity on control circuit A, so it cannot reliably release the selector from Park. FCA/Chrysler uses the code as P0928-00 BTSI Control: bulletin 08-072-14 (2013-14 Ram 1500, 2014 Durango with 8-speed) and 21-034-15 (2015 Chrysler 300 rotary shifter) name it when the selector will not leave Park or the knob turns without the brake applied; the cure there is a new electronic shifter. P0929 is the plausibility fault, P0930 and P0931 the low and high faults of circuit A, P092A the same open fault on circuit B. The driver usually cannot shift out of Park until the fault clears or the manual release is used.

Symptoms

• Selector lever will not move out of Park even with the brake pressed
• Problem may disappear after the ignition is switched off and the modules go to sleep
• Rotary or electronic shifter can be moved without the brake applied
• Shift position flashes or a message asks to return the selector to Park

Most likely causes

• Internal fault in the electronic shifter module, often logged together with P0607 (documented by FCA)
• Shift lock solenoid coil open
• Broken wire, poorly crimped or pushed-out terminal on the shift lock circuit

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 continuity of the wire between the component and the control module.
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 P0928 means

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

Frequently asked questions

Can I keep driving with code P0928?

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 P0928?

The most common causes are: internal fault in the electronic shifter module, often logged together with P0607 (documented by FCA); shift lock solenoid coil open; broken wire, poorly crimped or pushed-out terminal on the shift lock circuit.

Related codes

• P0929Gear Shift Lock Solenoid/Actuator Control Circuit A Range/Performance
• P0930Gear Shift Lock Solenoid/Actuator Control Circuit A Low
• P0931Gear Shift Lock Solenoid/Actuator Control Circuit A High
• P092AGear Shift Lock Solenoid/Actuator Control Circuit B/Open
• P0607Control Module Performance
• P0571Brake Switch A Circuit

Sources

• static.nhtsa.gov: MC 10139746 9999
• static.nhtsa.gov: SB 10058516 9906
• static.nhtsa.gov: INRD PE15030 64027

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.