OBD-II Generic Error Code P0924: How to Fix It

Q: Can I still drive my car with a P0924 code?

Driving with P0924 is not recommended for extended periods. The code indicates a fault in the reverse actuator circuit, which may prevent your vehicle from engaging reverse gear. While the car may still drive forward, you risk being stranded if you cannot back up, and continuing to drive with a transmission fault can lead to further damage. Have the issue diagnosed as soon as possible.

Q: What causes the P0924 code to appear?

Common causes include a failed or open-circuit reverse actuator solenoid, damaged or corroded wiring in the actuator circuit, a faulty electrical connector, low or contaminated transmission fluid affecting solenoid operation, or in rare cases a failed transmission control module (TCM). Wiring and connector issues are among the most frequent causes.

Q: How much does it cost to fix a P0924 code?

Repair costs vary widely depending on the root cause. A wiring repair or connector replacement may cost $50–$150 in parts and 1–2 hours of labor. Replacing an external actuator solenoid typically runs $100–$350 in parts plus labor. If the actuator is inside the valve body or the TCM needs replacement, costs can rise to $500–$1,500 or more at a transmission shop.

Q: Will P0924 trigger the check engine light?

Yes. P0924 is a powertrain code that will illuminate the check engine light (malfunction indicator lamp) on your dashboard. In some vehicles it may also trigger a transmission warning light. The light will remain on until the fault is repaired and the code is cleared with an OBD2 scanner.

Q: Is P0924 the same as a bad transmission solenoid?

P0924 specifically points to an open circuit in the reverse actuator — which is often a solenoid — but the code does not always mean the solenoid itself has failed. The open circuit could be caused by a broken wire, corroded connector, or bad ground rather than a faulty solenoid. Always perform circuit and connector tests before replacing the actuator to avoid unnecessary parts costs.

Abstract

Error code P0924 indicates a fault in the gear shift reverse actuator circuit, meaning the vehicle's transmission control module (TCM) has detected an open circuit or abnormal voltage signal from the actuator responsible for engaging reverse gear. This is a medium-severity code that may prevent your vehicle from shifting into reverse or cause erratic transmission behavior. Addressing it promptly is important to avoid further transmission damage or unsafe driving conditions.