Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P17AC624WD/AWD Transfer Case Shift Motor Limit Switch Signal Compare Failure The transfer case breather hose has been updated
Manufacturer communications
1Original wording in English
TOYOTA
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 …
Check vehicle applicability
4A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Toyota | TACOMA ↗ | 2025 |
| Toyota | TACOMA ↗ | 2024 |
| Toyota | TACOMA HYBRID ↗ | 2025 |
| Toyota | TACOMA HYBRID ↗ | 2024 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.