AutoCodes – Generic – P0903

P0903 Code - Clutch Actuator Circuit High

Quick Answer

The clutch actuator is operated by the Transmission Control Module (TCM) and engages and disengages the clutch by the clutch master cylinder movement of the clutch actuator. Common causes include Faulty Clutch Actuator, Clutch Actuator harness is open or shorted, Clutch Actuator circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0903 indicates Clutch Actuator Circuit High.
Common causes: Common causes include Faulty Clutch Actuator, Clutch Actuator harness is open or shorted, Clutch Actuator circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 18,709

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0903 Description

The clutch actuator is operated by the Transmission Control Module (TCM) and engages and disengages the clutch by the clutch master cylinder movement of the clutch actuator. An electric motor moves the clutch master cylinder, and the clutch stroke sensor, which is mounted on the clutch actuator assembly, detects the clutch master cylinder position. The TCM monitors the electrical current and clutch motor output terminal voltage, and detects malfunctions in the clutch motor circuit.

OBDII Code P0903 - Clutch Actuator Circuit High - AutoCodes.com — P0903 Code - Clutch Actuator Circuit High

What does this mean?

What are the Possible Causes of the DTC P0903?

Faulty Clutch Actuator
Clutch Actuator harness is open or shorted
Clutch Actuator circuit poor electrical connection

How to Fix the DTC P0903?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0903 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0903 code?

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Need Help with the Code?

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Information for Specific Makes

P0903 Dodge — Clutch Actuator Circuit High
P0903 Ford — Clutch Actuator Circuit High
P0903 Smart-car — Clutch Actuator Circuit High
P0903 Toyota — Clutch Actuator Circuit High

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.