P0902

Clutch Actuator Circuit Low

Severity: High
Driving: Drive only to a garage

The clutch actuator circuit is reading low - typically shorted to earth or open circuit. The module cannot drive the clutch actuator, so the clutch cannot be operated and the car will usually refuse to move.

Possible causes

CommonWiring shorted to earth or open circuit between the module and the actuator
CommonCorroded or water-ingressed connector at the actuator
CommonOpen or shorted actuator winding
PossibleChafed harness near the bellhousing
RareFailed control module driver

What you might notice

Car will not move
Transmission will not engage a gear
Transmission warning message
Check engine light on

What to check, in order

Disconnect the actuator and check whether the low reading persists at the harness. If it does, the fault is in the wiring rather than the actuator.
Inspect the connector for corrosion and water.
Measure the actuator winding resistance against specification.
Follow the harness around the bellhousing looking for heat and chafe damage.
Run the clutch adaptation procedure after any repair here.

Read this code from your own car

Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.

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Where this code sits

B · Body C · Chassis P · Powertrain U · Network and communication

Transmission and control modules