Shift Solenoid F Control Circuit Low

Where it lives

For P0998, the circuit described runs through the solenoid. The description of P0998 reports a fault at the solenoid.

Check these first

• A short to ground in the shift solenoid F circuit
• A shift solenoid F coil that is failing
• A chafed wire in the solenoid F harness
• A poor ground at the transmission

What to do next

1. Read shift solenoid F voltage on a scan tool
2. Check the circuit for a short to ground
3. Measure shift solenoid F resistance
4. Check the transmission ground
5. Replace the solenoid if the coil is weak
6. Clear the code and retest

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