P0902 Clutch Actuator Circuit Low

P0902 indicates the clutch actuator circuit is low. The controller sees low voltage, low current, or a grounded actuator control path.

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 the actuator before checking for a grounded control wire or missing supply voltage.

Useful checks before replacing parts

Measure actuator control voltage, feed supply, ground integrity, resistance, and current draw while checking for short-to-ground faults.
Inspect actuator connector terminals, harness routing, transmission case connector, relay or fuse supply, and module driver output.
Compare clutch actuator command with clutch position and shift inhibit data to confirm the low circuit is active during the fault.

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.