Powertrain
generic / SAE
P279A
Transfer Case Gear High Incorrect Ratio
When the transfer case is in High range the measured input/output speed ratio does not match the expected value. Worn chain or planetary set.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / 9A
Possible causes
- Stretched transfer case chain high
- Worn planetary gear set medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 600–3500 €
- Estimated time: 3–8 h
- Component: transfer case
- Component: planetary gear set
- MIL / check engine light
Sources
References
sae:J2012