The manual shift function provided by the +/- | up/down gate on your gear lever (or paddles/buttons on the steering wheel) is made possible by an automatic shift switch/transmission shift switch, a mode actuator, and the necessary wires and connectors. If there is an abnormally high voltage signal coming from somewhere in this circuit, a DTC P0958 will be recorded by the ECU.
How severe is the code?
Diagnostic code P0958 is not very severe, but it will leave you without the ability to use the manual shift function of your transmission.
Symptoms
Symptoms of a P0958 include:
- The manual shift function is disabled
Causes
- Damaged wiring connectors
- Failure of the Autostick transmission shift switch
How to diagnose the code?
The diagnostic process for an OBDII trouble code P0958 generally involves checking the wiring and connectors for signs of damage and corrosion. The Autostick shift switch should also be tested to ensure it is functioning correctly.
What repairs will fix P0958?
- Repair or replace damaged wiring and connectors
- Replace the Autostick transmission shift switch