Code status
Needs verification
Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.
- System
- Transmission
- Scope
- iso-sae-controlled-p0
- Standard
- SAE J2012 / ISO 15031-6
- Source
- legacy-import
Diagnostic boundary
A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.
Do not keep driving if the converter clutch remains applied at stops; it can cause stalling and additional transmission damage.
Useful checks before replacing parts
- Watch TCC command, TCC slip, engine RPM, turbine speed, and vehicle speed during decel, idle, and light throttle.
- Check for a stuck TCC solenoid, valve-body issue, wiring fault, contaminated fluid, or pressure-control problem.
- Review stall, shudder, or engine-stalling symptoms when coming to a stop.
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.