P0903: Clutch A Actuator Control Circuit High
What to do
Expect the car not to move. Have it recovered. Ask for the actuator's winding resistance to be measured directly, since that separates a failed motor from a broken wire and they are very different repairs.
What this code means
The clutch actuator circuit reads above its valid range — an open circuit or a short to supply. An open winding in the actuator motor and a broken wire to it are indistinguishable at the module, and both leave the clutch unoperated.
Likely causes
Start here
- Open circuit in actuator wiring · moderate
- Faulty clutch actuator · specialist
- Corroded transmission connector · moderate
Less common
- Wiring shorted to voltage · moderate
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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