Powertrain, generic · Transmission

P08BA Pressure Control Solenoid L

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modePossible

Base code for the twelfth pressure control solenoid of an automatic transmission; which valve carries the letter L is up to the manufacturer. Toyota is the one documented user: bulletin T-SB-0094-24 for the 2024 Tacoma and Tacoma Hybrid lists it as P08BA71, actuator stuck, next to the stuck faults of solenoids A, C, D, G and H and a torque converter clutch stuck off. Because Toyota reports the fault type through the suffix, the stuck valve sits under this base code rather than under P08BB/P08BC. The MIL comes on. For trucks built before the production change Toyota's fix is a new transmission with torque converter, on the hybrid also the hybrid module. GM's Corvette dual clutch tables contain no L code.

Likely causes

Solenoid or its control valve sticking inside the valve body

Internal transmission fault from production, debris spreading through the hydraulics

Contaminated or wrong transmission fluid

Connector or harness fault at the solenoid

Symptoms

Check engine light on
Harsh, delayed or missing shifts
Transmission may hold a substitute gear

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€300–9,000

Time1–7 h

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

Parts involved

pressure control solenoid lvalve body

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