AutoCodes – Generic – C2306

C2306 Code - Open Or Short Circuit In W Phase

Quick Answer

The Shift Control Actuator consists of the parking lock motor and the rotation angle sensor. Common causes include Faulty Auxiliary Battery, Faulty Transmission Control ECU Assembly, Faulty Shift Control Actuator. 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: C2306 indicates Open Or Short Circuit In W Phase.
Common causes: Common causes include Faulty Auxiliary Battery, Faulty Transmission Control ECU Assembly, Faulty Shift Control Actuator.
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 2,315

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C2306 Description

The Shift Control Actuator consists of the parking lock motor and the rotation angle sensor. The Transmission Control ECU receives a P position switch signal from the Power Management Control ECU (HV CPU) and activates the parking lock motor by controlling current, causing the parking lock mechanism to switch. The Transmission Control ECU outputs these DTCs when it detects a malfunction in the parking lock motor system.

OBDII Code C2306 - Open Or Short Circuit In W Phase - AutoCodes.com — C2306 Code - Open Or Short Circuit In W Phase

What does this mean?

What are the Possible Causes of the DTC C2306?

Faulty Auxiliary Battery
Faulty Transmission Control ECU Assembly
Faulty Shift Control Actuator
Shift Control Actuator harness is open or shorted
Shift Control Actuator circuit poor electrical connection

How to Fix the DTC C2306?

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 C2306 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 C2306 code?

Need more information on how to fix the C2306 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C2306 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C2306 Lexus — Open Or Short Circuit In W Phase
C2306 Toyota — Open Or Short Circuit In W Phase

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.

Frequently Asked Questions about C2306 Code

1. What does OBDII code C2306 mean?

C2306 indicates an open or short circuit in the W phase circuit, commonly related to the wheel speed sensor or motor control system in vehicles with electric or hybrid drivetrains.

2. What are the symptoms of code C2306?

Symptoms may include ABS warning lights, traction control system malfunction, reduced power delivery, and erratic or inconsistent vehicle performance.

3. What causes the C2306 code?

Common causes include damaged wiring or connectors in the W phase circuit, a faulty wheel speed sensor, or an issue with the motor control unit.

4. Can I drive with the C2306 code?

While the vehicle may still be drivable, safety features like ABS and traction control could be compromised, so itâ€™s best to address the issue promptly.

5. How do I diagnose the C2306 code?

Diagnosis involves inspecting the W phase circuit wiring and connectors for damage, testing the wheel speed sensor, and checking for any related control module faults.

6. How is the C2306 code fixed?

Repairs typically include replacing damaged wiring or connectors, installing a new wheel speed sensor, or repairing/replacing the motor control unit if necessary.

7. How much does it cost to fix the C2306 code?

Repair costs vary depending on the issue but typically range from $100 to $500, depending on whether youâ€™re replacing a sensor, wiring, or a more expensive component like the motor control unit.

8. Can a failing wheel speed sensor cause the C2306 code?

Yes, a failing or malfunctioning wheel speed sensor is a common cause of this code.

9. How can I prevent the C2306 code from recurring?

Regular inspection and maintenance of the vehicleâ€™s wiring, connectors, and sensor systems can help prevent this code from recurring.

10. Do I need a professional to fix the C2306 code?

While some basic repairs like replacing a sensor or repairing visible wiring issues can be done by experienced DIYers, more complex issues may require professional diagnosis and repair.