Four Wheel Drive (4WD) Switch Circuit

Where it lives

For P0836, the switch sits on the circuit this code reports. The description of P0836 reports a fault at the switch.

Check these first

• A failed 4WD selector switch
• An open or short in the 4WD switch wiring
• Corrosion at the 4WD switch connector
• A blown 4WD switch fuse
• A poor 4WD switch ground

What to do next

1. Read 4WD switch state on a scan tool
2. Turn the 4WD selector and watch the switch
3. Check the 4WD switch fuse
4. Test the 4WD switch wiring and ground
5. Replace the switch if the state does not change
6. Clear the code and retest

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