P0900Transmission

Clutch Actuator Circuit/Open

P0900 means the clutch actuator circuit is open or faulty on an automated manual or dual-clutch transmission. It usually points to the actuator, wiring, or a connector.

🚗 Risky. On automated or dual-clutch transmissions, a clutch actuator fault can cause no-move or limp mode. Address it soon.

HIGH

severity

🎯 Top Causes, Ranked by Likelihood

#1Faulty clutch actuator$300-$1200

40%

The actuator that engages the clutch has failed.

#2Open or damaged wiring$40-$300

30%

A broken circuit stops actuator control.

#3Connector fault$20-$150

15%

A disconnected or corroded connector.

#4Control module fault$200-$1000

15%

The clutch control module fails to drive the actuator.

🩺 Common Symptoms

No movement or limp mode
Jerky clutch engagement
Check engine light
Warning message on automated manuals

💰 Repair Cost: DIY vs Shop

DIY Cost

$40-$1200

Shop Cost

$150-$1500

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose P0900

1Inspect the clutch actuator wiring for opens

2Check the connector

3Test the actuator resistance and operation

4Replace the actuator if it is faulty

❓ Frequently Asked Questions

Can I drive with P0900?

Risky. The transmission may not move or may enter limp mode. Fix it soon.

How much to fix P0900?

Wiring may be modest; an actuator is often $300-$1200 plus labor.

Is P0900 serious?

Yes. Clutch actuation is essential on automated transmissions.

🔗 Related Codes

P0901P0902P0903P0810