P2772 Fault Code

Four Wheel Drive (4WD) Low Switch Circuit Range/Performance

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2772 fault code indicates an issue with the Four Wheel Drive (4WD) Low Switch Circuit. This code is triggered when the signal from the 4WD low switch is out of the expected range or performance criteria. The 4WD system is critical for optimal traction in various driving conditions, especially off-road or slippery surfaces. A malfunction in this area can impede the vehicle's ability to switch into low gear effectively.

What are the symptoms of the P2772 code?

Symptoms associated with the P2772 error code may include:

• Inability to switch into 4WD low mode.
• Warning lights on the dashboard indicating a 4WD system fault.
• Unusual noises or a grinding sensation when attempting to engage 4WD.
• Poor traction performance in off-road conditions.
• Unexpected behavior of the vehicle when attempting to shift between 2WD and 4WD.

What causes the P2772 code?

Possible causes for the P2772 fault code include:

• Faulty 4WD low switch.
• Damaged wiring or connectors in the 4WD control circuit.
• A malfunctioning 4WD control module.
• Poor ground connections or corrosion affecting electrical components.
• Software issues in the vehicle’s control module that may require an update or reset.

How to fix P2772?

To resolve the P2772 fault code, consider the following steps:

• Inspect and test the 4WD low switch for proper operation and replace it if necessary.
• Check wiring and connectors for damage, ensuring secure and clean connections.
• Test the 4WD control module's functionality and seek updates if needed.
• Address any ground connection issues that may affect circuit performance.
• Clear the fault code and perform a road test to confirm that the issue has been resolved.