AutoCodes – Generic – C0407

C0407 Code - AWD Oil Pump Motor

Quick Answer

The differential clutch pump delivers hydraulic oil pressure to the rear drive clutch solenoid valve and the rear differential clutch solenoid valve. Common causes include Faulty AWD Oil Pump Motor, AWD Oil Pump Motor harness is open or shorted, AWD Oil Pump Motor 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: C0407 indicates AWD Oil Pump Motor.
Common causes: Common causes include Faulty AWD Oil Pump Motor, AWD Oil Pump Motor harness is open or shorted, AWD Oil Pump Motor 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 13,556

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 Jul 04, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0407 Description

The differential clutch pump delivers hydraulic oil pressure to the rear drive clutch solenoid valve and the rear differential clutch solenoid valve. The pump is mounted to the torque transfer device housing. The pressure of the system is calculated by the rear differential clutch control module which monitors the differential clutch pump motor current levels. When the pressure reaches approximately 3200 kPa (464 psi), the rear differential clutch control module determines that the system pressure has been obtained and deacvitates the differential clutch pump. When the pressure drops below approximately 2700 kPa (392 psi), the rear differential clutch control module will reactivate the differential clutch pump.

OBDII Code C0407 - AWD Oil Pump Motor - AutoCodes.com — C0407 Code - AWD Oil Pump Motor

What does this mean?

What are the Possible Causes of the DTC C0407?

Faulty AWD Oil Pump Motor
AWD Oil Pump Motor harness is open or shorted
AWD Oil Pump Motor circuit poor electrical connection

How to Fix the DTC C0407?

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 does this mean?

Code Tech Notes

- C0407 02 AWD Oil Pump Motor Short to Ground
- C0407 04 AWD Oil Pump Motor Open
- C0407 0B AWD Oil Pump Motor High Current
- C0407 64 AWD Oil Pump Motor Component Slipping

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0407 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 C0407 code?

Need more information on how to fix the C0407 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0407 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0407 Buick — AWD Oil Pump Motor
C0407 Cadillac — AWD Oil Pump Motor
C0407 Chevrolet — AWD Oil Pump Motor
C0407 GMC — AWD Oil Pump Motor

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 C0407 Code

1. What does the OBDII code C0407 mean?

C0407 indicates an issue with the AWD oil pump motor, which is responsible for maintaining hydraulic pressure in the all-wheel-drive system.

2. What are the common symptoms of code C0407?

Symptoms may include the AWD system not engaging, reduced traction in slippery conditions, and an illuminated check engine or AWD warning light.

3. What causes the C0407 code to appear?

Common causes include a faulty oil pump motor, electrical issues like damaged wiring or connectors, or a malfunctioning AWD control module.

4. Can I drive my car with the C0407 code active?

While the vehicle may still be drivable in most conditions, the AWD system may be disabled, reducing traction and stability, especially in adverse weather.

5. How do I diagnose the C0407 code?

Check the wiring and connectors for damage, test the AWD oil pump motor for proper operation, and use a scan tool to verify signals from the AWD control module.

6. How is the C0407 code fixed?

Repairs may include replacing the AWD oil pump motor, repairing damaged wiring or connectors, or reprogramming or replacing the AWD control module.

7. How much does it cost to repair code C0407?

Repair costs vary but typically range from $200 to $800, depending on whether the oil pump motor or other components need replacement.

8. Can low fluid levels cause the C0407 code?

Low or contaminated AWD system fluid can sometimes contribute to issues with the oil pump motor, so checking the fluid level and quality is recommended.

9. Will clearing the C0407 code fix the problem?

Clearing the code without addressing the underlying issue will only provide a temporary solution, as the code will likely reappear.

10. How can I prevent the C0407 code from occurring?

Regular maintenance, including checking the AWD system fluid and inspecting wiring and connectors for damage, can help prevent this code from appearing.