What it means
The gear shift lock solenoid/actuator control circuit B reports a control circuit b/open condition. Selector lever interlock cannot be commanded reliably.
At a glance
- Usually lights the check-engine light
How it works
Circuit B is the control path for a gear-shift lock solenoid or actuator that helps prevent the selector leaving Park before release conditions are met. The module sets P092A when it detects an open path in circuit B, such as a broken control wire or an open solenoid coil, so it cannot reliably command the interlock.
Common causes
Most likely first.
- Open in control wire
- Open solenoid coil
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
How to diagnose it
- Record freeze-frame data and scan for related transmission or interlock codes before clearing anything.
- Check whether the selector can be released from Park and whether the warning returns when the brake is pressed and the selector is operated.
- Inspect circuit B wiring and connectors for a disconnected plug, broken wire, backed-out pin, or corrosion that could interrupt the circuit.
- Use the scan tool to command the circuit B actuator, if supported, and note whether it responds.
- Test circuit B for continuity and check the solenoid coil, comparing readings with the manufacturer's specification.
- If the wire and coil pass static checks, check for an intermittent open while moving the harness and operating the selector.
Common fixes
- Reconnect the circuit B connector or seat a backed-out terminal.
- Repair an open or damaged circuit B wire.
- Replace the circuit B solenoid if its coil is open.
Can I keep driving?
Avoid driving if the selector cannot be moved reliably or the transmission is stuck in a gear. If it shifts normally, drive only as needed and stop if shifting becomes harsh, delayed, or slips.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.