Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the switch that lets you change how your car drives, like from normal to sport mode. It's like a button on a video game controller not working right.
The P05D4 code indicates an issue with the electrical circuit of the Driver Mode Select Switch B, which is responsible for changing the driving mode of the vehicle.
The Driver Mode Select Switch B Circuit is part of the vehicle's control system that allows the driver to select different driving modes, such as eco, sport, or normal. This code is triggered when the powertrain control module (PCM) detects a malfunction in the circuit, which could be due to electrical issues such as a short or open circuit.
• Unable to change driving modes
• Illuminated check engine light
• Unresponsive driver mode select button
• Faulty driver mode select switch
• Damaged wiring or connectors
• Malfunctioning powertrain control module (PCM)
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Inspect the driver mode select switch for damage.
• Check wiring and connectors for corrosion or damage.
• Use a multimeter to test the circuit for continuity.
• Replace the driver mode select switch if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• Multimeter
• OBD-II scanner
• Screwdriver set
$100 - $400
Moderate
• Chevrolet Malibu
• Ford Mustang
• Toyota Camry
• Regularly inspect electrical connections for corrosion.
• Avoid spilling liquids on the switch area.
• Perform periodic vehicle diagnostics.
Electrical Circuit Issue
• Avoid using the driver mode select switch until repaired.
• Consult a professional mechanic for diagnosis.
• Do not ignore the check engine light.
Check with your vehicle manufacturer for warranty coverage on electrical components.
This code has been reported in vehicles with advanced driving mode features, often due to wear and tear or environmental factors affecting the switch.
Moderate – It should be addressed soon to ensure proper vehicle performance.
Driving with a malfunctioning driver mode select switch may affect vehicle handling and performance.
• Vehicle ignition in the ON position.
• Driver mode select switch engaged.
The driver mode select switch is typically located on the center console or dashboard, within easy reach of the driver.
Q: Can I drive my car with this code?
A: Yes, but the vehicle may not perform optimally, and you won't be able to change driving modes.
Q: Will this code clear itself?
A: The code may clear if the issue is resolved, but it often requires a manual reset with an OBD-II scanner.
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