P1728
Transmission Slip Error
P1728 is an OBD-II diagnostic trouble code meaning: Transmission Slip Error. Common causes: low transmission fluid level, worn friction discs. Estimated repair cost: $56–278.
Symptoms
- Noticeable slippage when shifting gears
- Delays when shifting gears
- Unusual noises from the transmission
- Reduced power and acceleration
- Check Engine Light Illuminates
Causes
- Low transmission fluid level
- Worn friction discs
- Problems with shift solenoids
- Malfunction of speed sensors
- Leaks in the hydraulic system
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the gearshift solenoids
- Check transmission speed sensors
- Inspect the hydraulic system for leaks
- If necessary, replace worn friction discs
Related codes
Error P1728 by Vehicle Brand
FAQ
What does the P1728 code mean?
P1728 is an OBD-II diagnostic trouble code that indicates: Transmission Slip Error
What causes a P1728 error code?
The most common causes of P1728 include: Low transmission fluid level; Worn friction discs; Problems with shift solenoids; Malfunction of speed sensors.
How do I fix a P1728 diagnostic trouble code?
To fix P1728: Check the level and condition of the transmission fluid. Diagnose the gearshift solenoids. Check transmission speed sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1728?
Do not drive — repair immediately
How much does it cost to fix P1728?
The estimated repair cost for P1728 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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