Fix P0905: STEP-BY-STEP diagnostic GUIDE!

The P0905: Gate Select Position Circuit Range/Performance refers to a problem where the gate select position circuit is not performing within its expected range. This could lead to incorrect gear selection or difficulty shifting gears, caused by issues with the gate select sensor, actuator, or wiring.

P0905 – Quick Overview

CodeInformation
MeaningP0905: Gate Select Position Circuit Range/Performance
Is it serious?Yes, this can lead to incorrect gear selection and drivability issues.
Possible causes– Range or performance issues with the gate select position circuit
– Faulty gate select sensor or actuator
– Wiring or connector issues
How to diagnose?– Test the circuit for range and performance
– Inspect wiring and connectors
– Replace faulty components if needed

P0905 Meaning

The P0905 code indicates that the gate select position circuit is not performing within its expected range, meaning the transmission control module (TCM) is receiving an incorrect or abnormal signal regarding gear selection. This could be due to faulty sensors, actuators, or wiring issues affecting the transmission’s ability to select gears properly.

Step-by-step diagnostic guide

ActionDescriptionTools Needed
Check for Other CodesUse an OBD-II scanner to check for any other related codes that may provide more details about the issue.OBD-II Scanner
Inspect Wiring and ConnectorsVisually inspect the wiring and connectors related to the gate select position circuit for damage, corrosion, or loose connections.Flashlight, Multimeter
Test the Circuit for Range and PerformanceUse a multimeter to test the gate select position circuit for correct voltage and performance within the specified range.Multimeter, Vehicle Manual
Test the Gate Select Sensor or ActuatorUse a diagnostic tool to test the functionality and performance of the gate select sensor or actuator. Replace if necessary.Diagnostic Tool, Replacement Sensor/Actuator
Replace Faulty ComponentsReplace any damaged wiring, connectors, or faulty sensors or actuators found during testing.Replacement parts, Tools
Clear Code and Test DriveAfter repairs, clear the code and take the vehicle for a test drive to confirm the issue is resolved.OBD-II Scanner, Vehicle Owner’s Manual
Recheck for CodesRe-scan the vehicle after the test drive to ensure the P0905 code does not return.OBD-II Scanner
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