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 replace transmission solenoids for a relay-control fault; stabilize TCM power control first.
Useful checks before replacing parts
- Check for short-to-ground, low relay coil resistance, damaged insulation, relay socket corrosion, and control-driver behavior.
- Compare command state with voltage at the relay coil and output feed to the TCM.
- Inspect shared fuse feeds and grounds if other relay or module-power codes are present.
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.