AutoCodes – Generic – P0B08

P0B08 Code - Auxiliary Transmission Fluid Pump Motor Phase W Current High

Quick Answer

The Engine Control Module (ECM) monitors the Auxiliary Transmission Fluid Pump Motor. Common causes include Faulty Auxiliary Transmission Fluid Pump, Auxiliary Transmission Fluid Pump harness is open or shorted, Auxiliary Transmission Fluid Pump 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: P0B08 indicates Auxiliary Transmission Fluid Pump Motor Phase W Current High.
Common causes: Common causes include Faulty Auxiliary Transmission Fluid Pump, Auxiliary Transmission Fluid Pump harness is open or shorted, Auxiliary Transmission Fluid Pump 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 4,093

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 P0B08 Description

The Engine Control Module (ECM) monitors the Auxiliary Transmission Fluid Pump Motor. The ECM sets the OBDII code when the Auxiliary Transmission Fluid Pump Motor signal is out of factory specifications.

OBDII Code P0B08 - Auxiliary Transmission Fluid Pump Motor Phase W Current High - AutoCodes.com — P0B08 Code - Auxiliary Transmission Fluid Pump Motor Phase W Current High

What does this mean?

What are the Possible Causes of the DTC P0B08?

Faulty Auxiliary Transmission Fluid Pump
Auxiliary Transmission Fluid Pump harness is open or shorted
Auxiliary Transmission Fluid Pump circuit poor electrical connection

How to Fix the DTC P0B08?

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 P0B08 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.

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Need more information on how to fix the P0B08 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0B08 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 P0B08 Code

1. What are the common symptoms of OBDII code P0B08?

Symptoms may include poor vehicle performance, transmission shifting issues, illuminated warning lights (such as the check engine light), and potential stalling or hesitation.

2. What are some possible causes of OBDII code P0B08?

Causes can include a malfunctioning auxiliary transmission fluid pump motor, damaged wiring or connectors, low transmission fluid levels, or a faulty powertrain control module (PCM).

3. How can I diagnose OBDII code P0B08?

Diagnosis typically involves using an OBDII scanner to retrieve the code, conducting a visual inspection of the transmission pump motor and related components, and performing electrical tests to pinpoint the issue.

4. Is it safe to continue driving with OBDII code P0B08 present?

It is not recommended to drive with this code present, as it can lead to further damage to the transmission system and potentially unsafe driving conditions. It is best to address the issue promptly.

5. What are some repair tips for resolving OBDII code P0B08?

Repair tips may include checking and replacing the transmission fluid pump motor, repairing any damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the fault code after repairs are completed.

6. Can OBDII code P0B08 be a DIY fix?

Depending on your automotive repair skills and experience, some aspects of addressing this code may be suitable for a DIY fix. However, complex transmission system repairs may require professional assistance.

7. How much does it typically cost to repair OBDII code P0B08?

Repair costs can vary depending on the extent of the damage and the specific components needing replacement. Costs may range from a few hundred to over a thousand dollars, including parts and labor.

8. How long does it take to repair OBDII code P0B08?

The repair time can vary based on the exact cause of the code and the availability of parts. In general, repairing OBDII code P0B08 may take a few hours to a full day to complete.

9. Are there any preventive measures to avoid OBDII code P0B08 in the future?

Regular maintenance checks, including inspecting the transmission system, ensuring proper fluid levels, and addressing any warning signs promptly, can help prevent issues leading to OBDII code P0B08.

10. Can OBDII code P0B08 affect the overall performance of the vehicle?

Yes, OBDII code P0B08 can impact the overall performance of the vehicle, particularly in terms of transmission function and reliability. It is essential to address this code to maintain optimal vehicle operation.