P099F Possible Causes
- Faulty Shift Solenoid H
- Shift Solenoid H Harness is Open or Shorted
- Shift Solenoid H Circuit Poor Electrical Connection
What Does It Mean?
P099F Code First Diagnosis
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
P099F Possible Symptoms
- Engine Light On (or Service Engine Soon Warning Light)
P099F Description
The Transmission Control Module (TCM) monitors the shift solenoid signal. The TCM sets the OBDII code when the shift solenoid does not meet factory specifications.