OBD-II Generic Error Code P0928: How to Fix It

Q: Can I drive my car with a P0928 code?

You can often drive short distances with P0928 active, but it is not recommended as normal operation. The gear shift lock solenoid is a safety feature that prevents shifting out of Park without brake pedal input. If the solenoid fails, the interlock may not function correctly, creating a potential safety hazard. Have the issue diagnosed and repaired as soon as possible, and use the manual shift lock override slot (usually covered by a small cap near the shifter) only in an emergency.

Q: What causes a P0928 code?

The most common causes of P0928 include a faulty gear shift lock solenoid with an open or shorted coil, damaged or corroded wiring in the solenoid control circuit, a bad or disconnected solenoid connector, a blown fuse protecting the circuit, a poor chassis ground connection, or in rare cases, an internal PCM driver failure. Rodent damage to wiring harnesses near the shifter assembly or transmission is also a surprisingly frequent cause.

Q: How much does it cost to fix a P0928 code?

If the repair is a simple wiring fix or connector cleaning, costs can be minimal — just your time and perhaps a few dollars in supplies. A replacement gear shift lock solenoid typically costs between $20 and $80 for the part itself. Labor at a shop can range from $75 to $200 depending on the vehicle and access difficulty. If the PCM is at fault, costs rise significantly, potentially $300 to $1,000 or more including programming. Diagnosing the root cause before replacing parts is always the most cost-effective approach.

Q: Will P0928 cause my car to be stuck in Park?

Yes, in some cases P0928 can result in the vehicle being stuck in Park if the shift lock solenoid fails in the locked position or the circuit loses power entirely, preventing the interlock from releasing. Most vehicles have a manual override — a small slot near the shifter base (sometimes hidden under a trim cap) where you can insert a key or small flathead screwdriver to manually release the shift lock. This is a temporary workaround only; the underlying fault must still be repaired.

Q: Is P0928 the same across all vehicles?

The P0928 definition — 'Gear Shift Lock Solenoid Control Circuit/Open' — is a standardized OBD-II code that applies across virtually all makes and models sold in the US after 1996. However, the exact location of the solenoid, the resistance specification, the wiring diagram, and the repair procedure vary by manufacturer. Always consult a vehicle-specific service manual or wiring diagram for accurate specifications before testing or replacing components.

Abstract

OBD-II error code P0928 indicates a problem with the gear shift lock solenoid control circuit, meaning the vehicle's powertrain control module (PCM) has detected an open, short, or abnormal voltage in the wiring or solenoid that controls the transmission gear shift lock. This solenoid is a critical safety component — it prevents you from shifting out of Park without the brake pedal depressed. If P0928 is active, you may notice the shifter behaves erratically, the vehicle won't shift out of Park, or the shift lock override slot needs to be used manually.