What Does P0913 Mean?
The TCM has detected that the gate select actuator circuit voltage exceeds the maximum expected threshold. This high-side fault typically indicates a short to battery voltage in the actuator wiring, an open ground path causing the signal to float high, or a stuck-high TCM driver output. The gate select actuator handles left/right motion of the shift mechanism.
Safety Warning
A high circuit fault may cause the actuator to operate continuously or unpredictably, leading to unintended gear gate changes. Do not drive; have the vehicle towed.
Common Causes
35%
Short to battery voltage in gate select actuator wiring
30%
Open ground circuit in gate select actuator wiring
20%
Gate select actuator relay stuck closed (welded contacts)
15%
TCM output driver failure (stuck high)
Diagnostic Steps
1
Step 1: Measure voltage at the gate select actuator connector with key on, actuator not commanded — voltage should be 0V; battery voltage present indicates a short to power or stuck relay.
2
Step 2: Verify the actuator ground circuit has continuity — measure resistance from the ground pin at the actuator connector to chassis ground; should be less than 1 ohm.
3
Step 3: Disconnect the actuator and check if the high voltage condition persists at the harness connector — if yes, the fault is in the wiring or TCM; if no, the actuator is internally shorted.
4
Step 4: Inspect the harness for chafing against power supply wires, especially near the battery, starter, or alternator wiring.
5
Step 5: Check the actuator relay (if applicable) for welded contacts — remove the relay and check if the high voltage condition clears.
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The TCM has detected that the gate select actuator circuit voltage exceeds the maximum expected threshold. This high-side fault typically indicates a short to battery voltage in the actuator wiring, an open ground path causing the signal to float high, or a stuck-high TCM driver output. The gate sel...
The most common cause of P0913 (Gate Select Actuator Circuit High) is: Short to battery voltage in gate select actuator wiring
Typical repair costs for P0913 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
A high circuit fault may cause the actuator to operate continuously or unpredictably, leading to unintended gear gate changes. Do not drive; have the vehicle towed.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0913 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automated Manual Transmission (Shift Control)
Difficulty
Type
Generic (SAE)
Recommended Tools
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