Powertrain, generic · Transmission

P0913 Gate Select Actuator Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Set when the drive circuit of the gate select actuator of an automated manual gearbox shows a voltage that is too high for the current switching state. Usual causes are a short of a motor or control line to battery voltage, or a driver stage in the module that no longer switches off; depending on the circuit design an open load can also read high. No manufacturer documents this code publicly. Patents by Isuzu and Hyundai/Kia describe electric select and shift actuators that the transmission controller powers directly, and CARB requires circuit checks on such outputs. P0912 is the opposite low fault, P0910 the open circuit, P0911 the plausibility fault and P0909 a select movement that misses its gate. The driver sees a warning lamp and a gearbox that can no longer change gates.

Likely causes

Actuator wire shorted to battery voltage
Open motor winding read as high voltage by the driver stage
Driver stage in the transmission control module stuck on

Symptoms

  • Check engine or transmission warning light on
  • Gearbox stops changing gates or holds one gear
  • Actuator may run noisily or get hot

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–1,800
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

gate select actuatorwiring harnesstcm

Related codes

P0909P0910P0911P0912

References: law.cornell.edu, patents.google.com, patents.google.com.