P284B
Shift Fork C Stuck
P284B is an OBD-II diagnostic trouble code meaning: Shift Fork C Stuck. Common causes: mechanical damage to the shift fork, lack of lubrication in the switching mechanism. Estimated repair cost: $56–167.
Symptoms
- Problems shifting to a certain gear
- The gearbox goes into emergency mode
- Jerks when shifting gears
- Unusual noises from the transmission
Causes
- Mechanical damage to the shift fork
- Lack of lubrication in the switching mechanism
- Worn or broken synchronizers
- Transmission hydraulic system problems
- Switching mechanism dirty
How to Fix
- Check the level and condition of the transmission fluid
- Inspect the switching mechanism for damage
- Check the operation of the gearbox hydraulic system
- If necessary, replace the shift fork
- Adapt the switching mechanism after repair
Related codes
Error P284B by Vehicle Brand
FAQ
What does the P284B code mean?
P284B is an OBD-II diagnostic trouble code that indicates: Shift Fork C Stuck
What causes a P284B error code?
The most common causes of P284B include: Mechanical damage to the shift fork; Lack of lubrication in the switching mechanism; Worn or broken synchronizers; Transmission hydraulic system problems.
How do I fix a P284B diagnostic trouble code?
To fix P284B: Check the level and condition of the transmission fluid. Inspect the switching mechanism for damage. Check the operation of the gearbox hydraulic system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P284B?
Limited driving only, diagnose soon
How much does it cost to fix P284B?
The estimated repair cost for P284B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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