Up and Down Shift Switch Circuit Range/Performance

Common symptoms

What you'll notice

• Check the wiring and connectors for any damage or loose connections.
• Inspect the up and down shift switch for any signs of malfunction or wear.
• Test the switch's functionality using a multimeter
• Clear codes and see if the error code reappears.
• Consider replacing the up and down shift switch if all other solutions do not resolve the issue.

Common causes

Most likely first

1. Faulty up and down shift switch
2. Wiring or connection issues in the up and down shift switch circuit
3. Malfunctioning transmission control module (TCM)
4. Low transmission fluid level or poor quality fluid
5. Mechanical issue in Transmission

How to diagnose & fix

Work through it in order

1. Difficulty shifting gears smoothly
2. Delayed engagement when shifting gears
3. Inconsistent or erratic shifting between gears
4. Inability to shift gears at all
5. Illuminated warning light on the instrument cluster indicating transmission issues