Error Code P0910 is defined as Gate Select Actuator Circuit Open. This is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those made since 1996 up to the present. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model to another.

Vehicle’s with Automated Manual Transmissions and Dual Clutch often use a Gear Shift Actuator Module (GSAM). The job of GSAM is to engage or disengage the clutch and choose the transmission gear based on the commands from the Transmission Control Module (TCM).

Error Code P0910 is stored when the Engine Control Module (ECM) determines that the gate selector actuator circuit is open instead of closed. This circuit is related to the vehicle’s powertrain system, specifically to the transmission controls. This code is likely caused by a malfunction in the vehicle’s transmission control.

Other related codes include:

Common Symptoms

As with most codes, this error code activates the Check Engine light. Other common symptoms include:

  • Transmission unable to shift properly
  • Increased fuel consumption

Possible Causes

An anomaly usually causes this code in the Gear Select Actuator function that triggers an open circuit signal. This is typically a result of:

  • Wiring problems
  • Defective TCM
  • A programming error in TCM
  • Defective select solenoid

How to Check

The first step is connecting the scan tool to the ECM and collecting the data regarding the function of the vehicle’s various system and reports. Check out the findings and refer to the parameters set by the vehicle’s manufacturer.

Use a professional reference manual to determine the causes of the Error Code.

You can conduct further scans to double-check the problem, or better yet, refer to the manufacturer’s pinpoint test to diagnose the code thoroughly.

How to Fix

  • Repair or replacement of faulty connections and wirings within the Gate Select Actuator circuitry
  • Replacement of the transmission Gate Select Actuator

The most common mistake when diagnosing this code is failing to verify the Gate Select Actuator circuit’s open condition. Thus, it is extremely important to conduct a thorough visual test on the Gate Select Actuator circuit and the related components of the transmission system.

Since this code affects the shifting of the vehicle, improper shifting can lead to a more serious problem in the vital components of the vehicle.