P08BA on Toyota
Pressure Control Solenoid "L" Actuator Stuck
P08BA on Toyota vehicles indicates pressure control solenoid "l" actuator stuck. Au7o has documented this code across 1 Toyota model — most commonly on Tacoma. The transmission control module commanded pressure control solenoid "L" to change state and the resulting line/clutch pressure did not respond as expected, so the module concluded the solenoid valve is mechanically stuck rather than electrically open. Toyota's Tacoma bulletin lists this as sub-code P08BA71 (Pressure Control Solenoid 'L' Actuator Stuck) among the fault set that authorizes replacement of the complete 8-speed automatic (AC8) transmission and torque converter.
Common Causes of P08BA
- •Pressure control solenoid 'L' valve stuck by debris or internal wear
- •Contaminated or degraded transmission fluid
- •Valve body bore wear letting the solenoid valve hang up
- •Internal transmission hydraulic failure requiring full unit replacement (Toyota AC8)
P08BA on Toyota by Model
Toyota Tacoma(1 issue)
- i-FORCE 8-Speed Automatic (AC8) Transmission Failure Requiring Full Replacement (TSB T-SB-0076-24 / T-SB-0094-24)2024-2025
Early-production 4th-generation Tacomas with the 8-speed automatic transmission can suffer internal failure of the torque converter clutch actuator or pressure-control solenoids, often at very low mileage (some under 15,000 miles). Owners report harsh 1st-to-3rd-gear jerking, slipping, lunging, the truck dropping into neutral or getting stuck in gear, and sudden loss of drive. Toyota traced the cause to a stuck pressure-control solenoid actuator or torque-converter-clutch actuator (with manufacturing debris suspected) and issued TSB T-SB-0076-24, superseded by T-SB-0094-24 which added the Hybrid (i-FORCE MAX). The fix is not a calibration but a complete transmission and torque-converter replacement.
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View P08BA across all makes →Frequently Asked Questions
What does P08BA mean on Toyota?▼
P08BA stands for "Pressure Control Solenoid "L" Actuator Stuck." The transmission control module commanded pressure control solenoid "L" to change state and the resulting line/clutch pressure did not respond as expected, so the module concluded the solenoid valve is mechanically stuck rather than electrically open. Toyota's Tacoma bulletin lists this as sub-code P08BA71 (Pressure Control Solenoid 'L' Actuator Stuck) among the fault set that authorizes replacement of the complete 8-speed automatic (AC8) transmission and torque converter. On Toyota specifically, this code is documented across 1 model.
What causes P08BA on Toyota vehicles?▼
Common causes on Toyota: Pressure control solenoid 'L' valve stuck by debris or internal wear, Contaminated or degraded transmission fluid, Valve body bore wear letting the solenoid valve hang up, Internal transmission hydraulic failure requiring full unit replacement (Toyota AC8). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P08BA on a Toyota?▼
Repair costs vary widely depending on the root cause and specific Toyota model.
Which Toyota models have P08BA documented?▼
Au7o has documented P08BA on 1 Toyota model: Tacoma.