P279A
Transfer Case Gear High Incorrect Ratio
P279A is an OBD-II diagnostic trouble code meaning: Transfer Case Gear High Incorrect Ratio. Common causes: transfer case gear wear, low or contaminated oil level in the transfer case. Estimated repair cost: $56–278.
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
- Check the level and condition of the oil in the transfer case
- Diagnose wheel speed sensors
- Check the operation of the control solenoid valves
- Perform computer diagnostics of the all-wheel drive system
- If necessary, replace or repair the transfer case
Related codes
Error P279A by Vehicle Brand
FAQ
What does the P279A code mean?
P279A is an OBD-II diagnostic trouble code that indicates: Transfer Case Gear High Incorrect Ratio
What causes a P279A error code?
The most common causes of P279A include: Transfer case gear wear; Low or contaminated oil level in the transfer case; Malfunction of wheel speed sensors; Problems with control solenoid valves.
How do I fix a P279A diagnostic trouble code?
To fix P279A: Check the level and condition of the oil in the transfer case. Diagnose wheel speed sensors. Check the operation of the control solenoid valves. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P279A?
Limited driving only, diagnose soon
How much does it cost to fix P279A?
The estimated repair cost for P279A is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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