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.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P277111Four Wheel Drive (4WD) Low Switch Circuit Short to GroundManufacturer communications
2Original wording in English
TOYOTA
Reported code forms P277111
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)…
CADILLAC, CHEVROLET, GMC
Reported code forms P2771
This Preliminary Information communication provides information to the technician about vehicles that have a malfunction indicator light or service anti-lock brake system message displayed in the Driver Information…
Check vehicle applicability
70A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE | 2011 |
| Cadillac | ESCALADE | 2010 |
| Cadillac | ESCALADE | 2009 |
| Cadillac | ESCALADE | 2008 |
| Cadillac | ESCALADE ESV | 2011 |
| Cadillac | ESCALADE ESV | 2010 |
| Cadillac | ESCALADE ESV | 2009 |
| Cadillac | ESCALADE ESV | 2008 |
| Cadillac | ESCALADE EXT | 2011 |
| Cadillac | ESCALADE EXT | 2010 |
| Cadillac | ESCALADE EXT | 2009 |
| Cadillac | ESCALADE EXT | 2008 |
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.
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.