Skip the auto shop - Our mechanics make house calls

P0922 OBD-II Trouble Code: Gear Shift Forward Actuator Circuit Low

Check Engine Light

P0922 code definition

The P0922 trouble code detects an electrical issue with the gear shift forward actuator circuit.

What the P0922 code means

The P0922 code is a standard OBD-II trouble code that notes a problem with the gear shift forward actuator circuit. The gear shift forward actuator is a critical part of an automatic transmission, and is responsible for actuating the shift into a forward-moving gear. When the powertrain control module (PCM), or the engine control module (ECM) detects an abnormally low voltage reading from the actuator circuit, then the P0925 trouble code will be stored.

What causes the P0922 code?

Potential causes of the P0922 trouble code include:

  • Defective gear shift forward actuator
  • Shorted wires, corroded connectors, or other damaged electrical components
  • Defective forward gear guide rail
  • Defective shift shaft
  • Mechanical malfunctions in the internal transmission
  • In rare cases, a faulty PCM, ECM, or transmission control module

What are the symptoms of the P0922 code?

The P0922 code will usually be accompanied by an illuminated Check Engine Light on the gauge cluster. It’s also possible that the car may have a hard time shifting into gear, or may be incapable of shifting into a forward-moving gear. If a forward gear is achieved, the car will likely be drivable, but fuel efficiency will probably be reduced.

How does a mechanic diagnose the P0922 code?

The P0922 code should be diagnosed with the help of an OBD-II trouble code scanner. A trustworthy mechanic will use the scanner to view the freeze frame data and assess the code. The mechanic will also check for the presence of any other trouble codes. If multiple codes are present, they should be addressed in the order in which they appear. The codes will then be reset, and the vehicle will be restarted, so the technician can see if the code remains detected. If not, then it is likely a case of an intermittent error, or perhaps an erroneously detected code.

If the P0922 code remains following the reset, then the mechanic will visually inspect the electrical components, replacing any wires, connectors, or fuses that are damaged or otherwise compromised. The gear shift forward actuator will then be inspected, followed by the shift shaft and the forward gear guide rail. If the issue remains unresolved, the mechanic will have to perform a more in depth inspection of the transmission, PCM, ECM, and transmission control module.

Whenever a component is replaced, the mechanic will need to pause the inspection, reset the trouble codes, and restart the vehicle again to see if the code remains. This helps the technician know as soon as the P0922 code has been resolved.

Common mistakes when diagnosing the P0922 code

The most frequently made diagnostic mistake with the P0922 code comes from a failure to adhere to the OBD-II trouble code diagnosis protocol. It is very important that the protocol be followed step by step, so that mechanics are able to complete diagnoses and repairs in an efficient and effective manner.

It is fairly common for simple electrical fixes to be overlooked in favor of more complex, erroneous repairs.

How serious is the P0922 code?

Vehicles with a P0922 trouble code will sometimes be drivable, but sometimes will not be, due to an inability to access a forward-moving gear. However, continuing to drive a vehicle that has a present P0922 code can result in serious damage to the transmission, so an inspection and repair should be scheduled as soon as possible.

What repairs can fix the P0922 code?

Potential repairs for the P0922 trouble code include:

  • Replacement of the gear shift forward actuator
  • Replacement of electrical components in the system
  • Replacement or repair of the forward gear guide rail
  • Replacement or repair of the shift shaft
  • In rare cases, replacement of the PCM, ECM, or transmission control module

Additional comments for consideration regarding the P0922 code

The PCM or any other control module should only be replaced if all other possible causes have been thoroughly inspected. In the rare event that one of the control modules does require replacement, it will also require a reprogramming.

Need help with a P0922 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...


Related questions

Q: EPC Light is on and engine will not start

Hello, thanks for writing in about your Volkswagen Jetta. Did you check the output (volume) of the fuel pump? From what you've described, it sounds like you are not getting sufficient fuel to the fuel injectors. For an issue like...

Q: Engine light - 2004 Honda Accord

Assuming that the starter motor is turning the engine over at sufficient speed (RPM), if the engine doesn't start and run, that means there is something wrong with the ignition system, the fuel system, and/or engine management sensors. It is...

Q: What are some inexpensive possible solutions for a P2506 code?

A good way to protect yourself in a used car transaction is to request a pre-purchase vehicle inspection. That inspection, carried out by a certified Mechanic, dispatched to your location, will give you very specific data regarding any current problems...