P284A
Shift Fork B Stuck
P284A is an OBD-II diagnostic trouble code meaning: Shift Fork B Stuck. Common causes: mechanical wear of the shift fork, contamination or lack of lubrication in the gearbox. Estimated repair cost: $56–222.
Symptoms
- Gear shifting problems
- Switching delays
- Transmissions are not included
- Jerks when switching
- Check Engine Light Is On
Causes
- Mechanical wear of the shift fork
- Contamination or lack of lubrication in the gearbox
- Shift solenoids malfunction
- Problems with the hydraulic system
- Transmission control module (TCM) malfunction
How to Fix
- Check the level and condition of the oil in the gearbox
- Diagnose the operation of switching solenoids
- Check the hydraulic system for leaks
- Disassemble the gearbox to inspect the shift fork
- Replace damaged or worn parts
Related codes
Error P284A by Vehicle Brand
FAQ
What does the P284A code mean?
P284A is an OBD-II diagnostic trouble code that indicates: Shift Fork B Stuck
What causes a P284A error code?
The most common causes of P284A include: Mechanical wear of the shift fork; Contamination or lack of lubrication in the gearbox; Shift solenoids malfunction; Problems with the hydraulic system.
How do I fix a P284A diagnostic trouble code?
To fix P284A: Check the level and condition of the oil in the gearbox. Diagnose the operation of switching solenoids. Check the hydraulic system for leaks. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P284A?
Do not drive — repair immediately
How much does it cost to fix P284A?
The estimated repair cost for P284A is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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