P279B
Transfer Case Gear Low Incorrect Ratio
P279B is an OBD-II diagnostic trouble code meaning: Transfer Case Gear Low Incorrect Ratio. Common causes: low or dirty oil level in transfer case, worn or damaged transfer case gears. Estimated repair cost: $56–222.
Symptoms
- Unstable operation of the transfer case
- Reduced power transfer efficiency
- Unusual noises from the transfer case
- Check Engine Light Illuminated
- Gear shifting problems
Causes
- Low or dirty oil level in transfer case
- Worn or damaged transfer case gears
- Malfunction of transfer case sensors
- Problems with the electrical circuit of the sensors
- Transmission control module (TCM) malfunction
How to Fix
- Check the level and condition of the oil in the transfer case
- Diagnose transfer case sensors and their circuits
- Check the mechanical condition of the transfer case
- Replace damaged components if necessary
- Reset error and test drive
Related codes
Error P279B by Vehicle Brand
FAQ
What does the P279B code mean?
P279B is an OBD-II diagnostic trouble code that indicates: Transfer Case Gear Low Incorrect Ratio
What causes a P279B error code?
The most common causes of P279B include: Low or dirty oil level in transfer case; Worn or damaged transfer case gears; Malfunction of transfer case sensors; Problems with the electrical circuit of the sensors.
How do I fix a P279B diagnostic trouble code?
To fix P279B: Check the level and condition of the oil in the transfer case. Diagnose transfer case sensors and their circuits. Check the mechanical condition of the transfer case. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P279B?
Do not drive — repair immediately
How much does it cost to fix P279B?
The estimated repair cost for P279B is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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