Useful checks before replacing parts
- Check fluid level, fluid condition, leaks, filter restriction, pump output, pressure sensor plausibility, and pressure-control solenoid command.
- Compare actual pressure or inferred slip with input speed, output speed, commanded gear, shift timing, and fluid temperature.
- Review whether low pressure appears hot, cold, during engagement, under load, or after service that affected fluid level.
Related OBD-II codes
These nearby transmission entries can help compare wording and fault area. They may share the same verification status as the source database.