Shift Timing Solenoid A Range/Performance

Where it lives

For P0786, start at the solenoid the description names.

Check these first

• A shift timing solenoid A responding slowly
• Debris blocking the solenoid A valve
• Low or dirty transmission fluid
• A restricted valve body passage
• A TCM driver fault

What to do next

1. Command shift timing solenoid A and watch the shift timing
2. Check the fluid level and condition
3. Measure the solenoid A resistance
4. Test the solenoid A circuit for a short
5. Replace the solenoid if the shift timing does not change
6. Clear the code and retest

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