Powertrain, generic · Transmission

P099D Shift Solenoid H Control Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

Electrical feedback from the drive circuit of shift solenoid H does not fit the command, although no hard short or open is seen. No manufacturer was found to document this code. Solenoid H means an eighth shift solenoid. The only documented H user, the 2017–2018 Genesis G80 and G90, reports its on/off solenoid for the shift-by-wire park function under P076A and P076D, outside this block. Ford's OBD summaries describe shift solenoid checks only up to E, with separate open, short to ground and short to power codes and 0.5 to 5 s electrical monitoring. CARB requires transmission outputs to be checked for proper function. Low and high are P099E/P099F, the open circuit is P09A1.

Likely causes

Solenoid coil resistance out of specification
High-resistance connector or harness contact
Weak driver stage in the transmission control module

Symptoms

  • Warning light depending on calibration
  • Harsh or missing shifts involving this solenoid

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

P099EP099FP09A1P076AP099A

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