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P17AC · Manufacturer communications

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

P17AC ← What does this code mean?

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T-SB-0093-25 ↗

TOYOTA · 2025-12-17

Some 2024 – 2025 model year 4WD Tacoma and Tacoma Hybrid vehicles may exhibit a condition where the 4WD lights are flashing and a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) present: •P277111 – Four Wheel Drive (4WD) Low Switch Circuit Short to Ground •P178462 – 4WD/AWD Transfer Case Shift Motor Limit Switch and Transfer Case H4-L4 Position Switch Signal Compare Failure •P17AC62 – 4WD/AWD Transfer Case Shift Motor Limit Switch Signal Compare Failure The transfer case breather hose has been updated.