P05D4
Driver Mode Select Switch B Circuit
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace any damaged or loose wiring connections related to the Driver Mode Select Switch B Circuit.
- Verify and replace the Driver Mode Select Switch B if it is determined to be faulty or malfunctioning.
- Inspect and repair any damaged or corroded connectors or terminals in the circuit.
Common causes
Most likely first
- Faulty driver mode select switch
- Loose or damaged wiring connections related to the driver mode select switch
- Defective or malfunctioning engine control module (ECM)
- Incorrect programming or calibration of the ECM
- Electrical or electronic interference with the driver mode select switch circuit
How to diagnose & fix
Work through it in order
- Malfunction indicator lamp (MIL) illuminates on the dashboard
- Loss of power or decreased engine performance
- Difficulty or inability to switch between different driving modes
- Unresponsive or erratic behavior from the driver mode select switch
- Vehicle may go into a failsafe mode, limiting the functionality of certain features related to driver mode selection
Read & clear P05D4 yourself
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