P092A — Gear Shift Lock Solenoid/Actuator Control Circuit “B”/Open #

Note: The wording of this diagnostic trouble code (DTC) may vary depending on the vehicle manufacturer (OEM).

• Gear Shift Lock Solenoid Circuit “B” Open (Toyota, Ford)
• Shift Lock Actuator Control Circuit “B” Open (Honda, Nissan)
• Transmission Shift Lock Solenoid/Open Circuit “B” (GM, Chrysler)

Summary of Code P092A #

The P092A code is triggered when the vehicle’s engine control module (ECM) or transmission control module (TCM) detects an open circuit or malfunction in the Gear Shift Lock Solenoid/Actuator “B” Control Circuit. The shift lock solenoid is a safety device that prevents the driver from shifting out of “Park” unless the brake pedal is pressed. “Circuit B” refers to a specific electrical path within the solenoid’s control system, and “open” means the circuit is interrupted or not completing as designed. This interruption can lead to difficulties moving the gear shifter, typically preventing shifting from “Park” or between gears. Prompt diagnosis and repair are recommended to avoid being stranded or experiencing inconvenient safety lockouts.

Frequent Symptoms for Code P092A #

When the P092A code is active, you’re likely to notice one or more of these symptoms. The most common is an inability to move the shifter out of “Park,” but additional warning signs can help pinpoint the issue before it leaves you stranded:

• Gear shifter stuck in “Park” position
• Difficulty shifting out of “Park” or into other gears
• Malfunction Indicator Lamp (MIL) or “Check Engine” light illuminated
• Intermittent or delayed shifting response
• Clicking noise from the shifter area
• Brake pedal must be pressed excessively hard to shift

Probable Causes for Code P092A #

Several underlying issues can set code P092A. These range from simple electrical faults to mechanical component failures. In most cases, the problem lies within the wiring or the solenoid itself. Here are the most common causes, listed by likelihood:

1. Faulty gear shift lock solenoid/actuator — The solenoid coil may have failed or become internally open.
2. Damaged, broken, or corroded wiring/connectors — The circuit feeding the solenoid may have open, shorted, or high-resistance connections.
3. Blown fuse or faulty relay — The electrical supply to the solenoid circuit may be interrupted.
4. Brake pedal switch malfunction — If the brake switch fails, the control module may not energize the solenoid.
5. Faulty ECM/TCM — Rare, but possible if the control module cannot properly command the solenoid.
6. Aftermarket remote start or alarm system interference

Step-by-Step Diagnosis for Code P092A #

Diagnosing P092A involves a logical, methodical approach to pinpoint the problem. Safety first: set the parking brake and ensure the vehicle cannot roll. Here’s a master technician’s workflow:

1. Scan for codes and record freeze frame data. Check for related codes, especially those involving the brake switch or CAN communication.
2. Inspect the shift lock solenoid and harness visually. Look for damaged wires, loose connectors, or corrosion at the solenoid and junctions.
3. Check fuse(s) and relay(s) related to the shift lock circuit with a test light or multimeter.
4. Test the shift lock solenoid directly. With harness disconnected, measure resistance across the solenoid. Infinite resistance = open circuit (replace solenoid).
5. Verify brake pedal switch operation. Ensure it sends a signal when depressed. Confirm brake lights function.
6. Test circuit continuity and voltage from the control module to the solenoid using a wiring diagram.
7. Check for aftermarket system interference if recent remote start/alarm installation.
8. If all else checks out, consider ECM/TCM as a last resort.

Possible Repairs for Code P092A #

The repair depends on the root cause found during diagnosis. Always address wiring and fuse issues before replacing expensive components. Typical repairs include:

• Replace faulty gear shift lock solenoid/actuator
• Repair or replace damaged wiring/connectors
• Replace blown fuse(s) and test circuit for shorts
• Replace faulty relay supplying the solenoid
• Replace or adjust brake pedal switch
• Remove or correctly rewire aftermarket systems causing interference
• Rarely, replace or reprogram the ECM/TCM (only after all other steps)

Is It Safe to Drive with Code P092A? #

Driving is limited and may be unsafe. If the shift lock solenoid fails in the locked position, you may be unable to move the gear shifter out of “Park.” This can leave you stranded or unable to shift into “Drive” or “Reverse,” especially after parking. In some cases, the shift lock can be manually bypassed (see your owner’s manual), but this is intended for emergency use only. It’s best to have the issue diagnosed and repaired promptly to avoid inconvenience or safety risks.

Vehicles Most Commonly Affected by Code P092A #

While P092A is a universal OBD-II code, it is most frequently reported by owners or technicians working on automatic transmission vehicles from these manufacturers:

• Toyota/Lexus
• Honda/Acura
• Nissan/Infiniti
• Ford/Lincoln
• Chevrolet/GMC/Buick/Cadillac
• Chrysler/Dodge/Jeep/RAM
• Hyundai/Kia
• Volkswagen/Audi

Typically, models from the last 15 years with electronic shift interlocks and automatic transmissions are susceptible.

Common Mistakes & Best Practices for Code P092A #

Misdiagnosis of P092A often leads to unnecessary part replacement or incomplete repairs. To avoid wasted time and money, follow these best practices:

• Don’t replace the shift lock solenoid before checking fuses, wiring, and connectors.
• Always test the brake pedal switch and related circuits.
• Use a wiring diagram to trace the entire circuit.
• Check for aftermarket wiring modifications that may interrupt the circuit.
• Clear codes after repairs and verify proper shifter operation before returning the vehicle.

Quick FAQ for Code P092A #

Here are answers to the most frequent questions about code P092A:

• Q: Can I manually override the shift lock if my car is stuck in “Park”?
  A: Most vehicles have a manual shift lock release (often a small slot near the shifter). Consult your owner’s manual for the location and procedure. This is for emergency use only and does not fix the underlying problem.
• Q: How much does it cost to fix P092A?
  A: Repair costs depend on the root cause. Wiring or fuse repairs are inexpensive, while solenoid replacement can range from $100–$400 (parts and labor). Dealer diagnosis may add extra cost.
• Q: Is it safe to keep driving if my “Check Engine” light comes on with P092A?
  A: You may be able to drive temporarily if you can shift normally, but the risk of being unable to shift out of “Park” or into gear increases. Address the issue as soon as possible.