Powertrain, generic · Transmission

P099F Shift Solenoid H Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

High-voltage fault in the control circuit of shift solenoid H, from a short to voltage or, on pull-up driver designs, an open coil or wire. No manufacturer was found to document this code. Genesis' 2017–2018 G80/G90 shift-by-wire, the only documented H user, files its park-function on/off solenoid under P076A and P076D, and bulletin 21-AT-016HG fixes it by replacing valve and electronic module. For the high-side logic, Mitsubishi's six-speed is the nearest model: on solenoid G it treats 3.7 V or more for 0.5 s while commanded off as an open circuit. Ford's summaries give short to power its own code for each of solenoids A to E. CARB requires output circuit checks. P099E is the low side.

Likely causes

Open control wire or connector
Control wire shorted to voltage
Open solenoid coil

Symptoms

  • Check engine light
  • Limp mode or missing gears

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–1,800
Time1–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

shift solenoid hwiring harnesstcm

Related codes

P099DP099EP09A1P099CP076D

References: law.cornell.edu, static.nhtsa.gov, mitsubishitechinfo.com, fordservicecontent.com.