P099EShift Solenoid H Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Low-voltage fault, typically a short to ground, in the control circuit of shift solenoid H. No manufacturer was found to document this code. A solenoid H exists only on transmissions with eight or more shift solenoids; Genesis' 2017–2018 G80/G90, the one documented H user, reports its park-function on/off solenoid under P076A and P076D. The closest documented logic is from lower letters: Mitsubishi detects a short on its solenoid G when the voltage stays below 3.7 V for 0.5 s while commanded on, and Ford's summaries store separate short-to-ground codes for solenoids A to E, checked continuously. CARB requires such circuit checks on transmission outputs. P099F is the high side, P09A1 the open circuit.
- What you may notice
- Check engine light
- Limp mode or missing gears
- Likely causes
- LikelyControl wire shorted to ground
- PossibleShorted solenoid coil
- RareTransmission control module driver fault
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.