AutoCodes – Generic – P0C04

P0C04 Code - Drive Motor 'B' Current High

Quick Answer

When three-phase alternating current flows through the three-phase windings of the stator coil, a rotating magnetic field is generated in MG2. Common causes include Faulty Hybrid Vehicle Motor Assembly, Hybrid Vehicle Motor Assembly harness is open or shorted, Hybrid Vehicle Motor Assembly 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: P0C04 indicates Drive Motor 'B' Current High.
Common causes: Common causes include Faulty Hybrid Vehicle Motor Assembly, Hybrid Vehicle Motor Assembly harness is open or shorted, Hybrid Vehicle Motor Assembly 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 3,193

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
FAQs
Comments
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Code P0C04 Description

When three-phase alternating current flows through the three-phase windings of the stator coil, a rotating magnetic field is generated in MG2. The system controls the rotation of the magnetic field in accordance with the rotating position and speed of the rotor. As a result, the permanent magnets provided in the rotor are pulled in the direction of rotation, generating torque. The generated torque is almost proportional to the amount of current. The system controls MG2 speed by regulating the frequency of the alternating current. Furthermore, the system properly controls the rotating magnetic field and the angle of the rotor magnets in order to generate high torque in an efficient manner, even at high speeds.

OBDII Code P0C04 - Drive Motor 'B' Current High - AutoCodes.com — P0C04 Code - Drive Motor 'B' Current High

What does this mean?

What are the Possible Causes of the DTC P0C04?

Faulty Hybrid Vehicle Motor Assembly
Hybrid Vehicle Motor Assembly harness is open or shorted
Hybrid Vehicle Motor Assembly circuit poor electrical connection

How to Fix the DTC P0C04?

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 P0C04 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 P0C04 code?

Need more information on how to fix the P0C04 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0C04 code diagnosed by a professional: Find a repair shop in your area

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 P0C04 Code

1. What are the common symptoms of OBDII code P0C04 Drive Motor 'B' Current High?

- Common symptoms may include decreased fuel efficiency, reduced power output, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P0C04 Drive Motor 'B' Current High?

- Possible causes may include a malfunctioning drive motor 'B', issues with the electrical system, or a faulty sensor.

3. How can I diagnose OBDII code P0C04 Drive Motor 'B' Current High?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, conducting a visual inspection for any visible issues, and testing the drive motor and related components.

4. What are some repair tips for resolving OBDII code P0C04 Drive Motor 'B' Current High?

- Repair tips may include checking and repairing any damaged wiring, replacing the drive motor 'B' if necessary, and resetting the fault code after repairs are completed.

5. Can driving with OBDII code P0C04 Drive Motor 'B' Current High cause further damage to the vehicle?

- Continuing to drive with this code present may potentially cause damage to other components of the vehicle, so it is recommended to address the issue promptly.

6. How much does it typically cost to repair OBDII code P0C04 Drive Motor 'B' Current High?

- The cost of repair can vary depending on the specific cause of the code and the labor rates in your area, but it is advisable to consult with a professional for an accurate estimate.

7. Are there any preventive measures to avoid encountering OBDII code P0C04 Drive Motor 'B' Current High in the future?

- Regular maintenance of the vehicle, including checking the electrical system and drive motor components, can help prevent issues that may trigger this code.

8. Can OBDII code P0C04 Drive Motor 'B' Current High be reset without making any repairs?

- While the code can be cleared using an OBDII scanner, it is essential to address the underlying issue to prevent the code from reoccurring.

9. Is it safe to drive my vehicle with OBDII code P0C04 Drive Motor 'B' Current High?

- It is generally not recommended to drive the vehicle with this code present, as it can impact the performance and efficiency of the vehicle.

10. How long does it typically take to repair OBDII code P0C04 Drive Motor 'B' Current High?

- The duration of the repair process can vary depending on the complexity of the issue and the availability of parts, but it is advisable to consult with a mechanic for a more accurate timeline.

1. What are the common symptoms of OBDII code P0C04 (Drive Motor 'B' Current High)?

- Common symptoms include reduced vehicle performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P0C04?

- Possible causes may include a malfunctioning drive motor 'B', issues with the motor control module, electrical faults in the motor circuit, or software glitches.

3. How serious is OBDII code P0C04 (Drive Motor 'B' Current High)?

- This code should be addressed promptly as it can lead to further damage to the drive motor and other related components if left unresolved.

4. Can I continue driving with OBDII code P0C04 present?

- It is not recommended to continue driving with this code active as it can impact the performance and efficiency of the vehicle.

5. How can I diagnose OBDII code P0C04?

- Diagnosis typically involves using a scan tool to retrieve the code, checking the drive motor 'B' and related components for any visible damage, and conducting electrical tests.

6. What are some repair tips for OBDII code P0C04?

- Repair tips may include inspecting and repairing any damaged wiring or connectors, replacing a faulty drive motor 'B', updating software if necessary, and clearing the code to see if it reoccurs.

7. Can a DIY enthusiast fix OBDII code P0C04 at home?

- While some basic checks and repairs may be possible for DIY enthusiasts, diagnosing and repairing this code may require specialized tools and expertise, so it is recommended to consult a professional.

8. Are there any recalls related to OBDII code P0C04?

- It is advisable to check with the vehicle manufacturer or the National Highway Traffic Safety Administration (NHTSA) for any recalls related to this specific OBDII code.

9. How much does it typically cost to repair OBDII code P0C04?

- The cost of repair can vary depending on the underlying cause, parts needed, and labor rates, so it is best to obtain estimates from reputable repair shops.

10. Can ignoring OBDII code P0C04 cause further damage to my vehicle?

- Ignoring this code can potentially lead to more severe issues with the drive motor 'B' and other components, impacting the overall performance and safety of the vehicle.