Gate Select Actuator Circuit Open
What does P0910 mean?
The P0910 code means the vehicle's onboard diagnostic system has detected: Gate Select Actuator Circuit Open. This is a critical severity code.
Common Symptoms
- Check Engine Light illuminated
- Automated transmission cannot select gear gates
- Vehicle stuck in one gear or neutral
- No response when shifting
Probable Causes (Ranked by Likelihood)
- Failed gate select actuator motor Very High
- Open circuit in gate select actuator wiring High
- Disconnected connector at gate select actuator Moderate
- TCM output driver circuit failure Low
Step-by-Step Diagnostic Procedure
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Check the gate select actuator connector is properly connected
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Measure actuator motor resistance with a multimeter
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Test for continuity in the wiring between TCM and actuator
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Command the actuator using a bidirectional scan tool
Frequently Asked Questions
What is a gate select actuator?
In automated manual transmissions, the gate select actuator moves the shift mechanism left and right to select the appropriate gear gate (like moving a manual shifter side to side). A separate actuator then moves within the gate to engage the gear.
Can I drive with P0910?
No, without the gate select actuator, the transmission cannot change gears. The vehicle must be towed.
Are gate select actuators expensive?
The actuator itself is typically $200 to $600. Labor can be significant as the actuator is often inside the transmission housing.