Shift Solenoid G Control Circuit Low

Where it lives

For P099B, the circuit described runs through the solenoid. The description of P099B reports a fault at the solenoid.

Check these first

• A short to ground on the shift solenoid G control wire
• A failed shift solenoid G
• An open in the solenoid G control circuit
• Contaminated transmission fluid blocking the solenoid

What to do next

1. Inspect the solenoid G control wire for a short to ground
2. Measure shift solenoid G resistance against a known-good value
3. Check the transmission fluid for metal or burnt debris
4. Command shift solenoid G with a scan tool and listen for it to click
5. Replace shift solenoid G if the circuit tests good
6. Clear the code and retest

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