P3061moderate severityPowertrain
Shift Quality - Harsh Upshift Detected
on 2015 Kia Forte 1.8L I4 · FWD
What this code means
The TCM detected shift quality parameters outside acceptable range during upshifts. Shift flare or bind-up is occurring.
Symptoms
- Check Engine Light
- Harsh 1-2 or 2-3 upshift
- Vehicle jerks during upshift
- Passengers feel impact during shifts
- Delayed then sudden engagement
- Driveline clunk on shifts
Common causes
- Worn shift solenoid
- Incorrect line pressure
- Accumulator piston wear
- Valve body bore wear
- Transmission fluid degradation
Diagnostic steps
- Monitor shift time and quality PIDs
- Check line pressure at each gear
- Inspect shift solenoids electrically
- Review TCM shift adaptation values
- Perform fluid and filter service
Repair notes
Replace shift solenoids or valve body. Transmission fluid service may help in early stages. Reset shift adaptations after repair.
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