In order to make sure that your transmission goes into the gear that you have selected, the gear shift forward actuator assembly uses a series of sensors to detect what gear you have selected, then an electric motor activates it inside the transmission. If there is an unusually low voltage signal coming from the gear shift forward actuator circuit, a P0922 DTC will be saved.
How Serious is the Code?
The P0922 diagnostic trouble code is pretty serious, because the transmission problems related to it can potentially leave your vehicle undrivable.
Symptoms of a P0922 include:
- Transmission operates erratically
- Transmission will not shift into or out of a forward gear
- Damage to the wiring / connectors
- Gearshift forward actuator failure
- Gear guide rail failure
- Shift shaft failure
- Internal mechanical failure
- ECU/TCM issues or failure
How to Diagnose the Code?
To properly diagnose a P0922 OBDII trouble code, your mechanic will need to inspect the wiring and connectors for signs of damage and corrosion. They will also need to see if there is any damage to the gear guide rail and shift shaft. Other potential causes of this OBD2 can be internal mechanical failure and issues with the ECU or TCM.
What Repairs Will Fix P0922?
- Repair or replace any damage wiring or connectors
- Replace gearshift forward actuator
- Repair or replace gear guide rail
- Repair or replace shift shaft
- Repair internal mechanical fault(s)
- Reprogram or replace ECU/TCM
- P0920 – Gear Shift Forward Actuator Circuit/Open
- P0921 – Gear Shift Forward Actuator Circuit Range/Performance
- P0923 – Gear Shift Forward Actuator Circuit High
- P0924 – Gear Shift Reverse Actuator Circuit/Open
- P0925 – Gear Shift Reverse Actuator Circuit Range/Performance
- P0926 – Gear Shift Reverse Actuator Circuit Low
- P0927 – Gear Shift Reverse Actuator Circuit High