Shift Timing Solenoid A Low

Where it lives

For P0787, the part to look at first is the solenoid named here.

Check these first

• A short to ground in the shift timing solenoid A wire
• A shift timing solenoid A with low resistance
• Corrosion at the solenoid A connector
• A poor TCM ground

What to do next

1. Read shift timing solenoid A voltage on a scan tool
2. Test the signal wire for a short to ground
3. Measure the solenoid A resistance
4. Check the TCM ground
5. Replace the solenoid if the circuit tests good
6. Clear the code and retest

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