P279A

Symptoms

• Check Engine light comes on
• Unstable all-wheel drive operation
• Reduced vehicle dynamics
• Unusual noises from the transfer case
• Problems with switching drive modes

Causes

• Transfer case gear wear
• Low or contaminated oil level in the transfer case
• Malfunction of wheel speed sensors
• Problems with control solenoid valves
• Mechanical damage to the transfer case

How to Fix

1. Check the level and condition of the oil in the transfer case
2. Diagnose wheel speed sensors
3. Check the operation of the control solenoid valves
4. Perform computer diagnostics of the all-wheel drive system
5. If necessary, replace or repair the transfer case

Related codes

Error P279A by Vehicle Brand