Transmission Mode Switch B Circuit High

Where it lives

For P071F, the circuit described runs through the switch. The description of P071F reports a fault at the switch.

Check these first

• An open in the mode switch B circuit
• A mode switch B that stays open
• A broken wire in the harness
• A bad switch ground

What to do next

1. Read the mode switch B state on a scan tool
2. Ground the signal wire to test the circuit
3. Check the wiring for an open
4. Inspect the ground and connector pins
5. Replace the mode switch if the circuit tests good
6. Clear the code and retest

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