AutoCodes – Generic – P278F

P278F Code - Clutch 'B' Adaptive Learning at Limit

Quick Answer

The Transmission Control Module (TCM) monitors the Clutch 'B' Adaptive Learning. Common causes include Low transmission fluid, Internal mechanical transmission failure, Faulty Transmission Control Module (TCM). 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: P278F indicates Clutch 'B' Adaptive Learning at Limit.
Common causes: Common causes include Low transmission fluid, Internal mechanical transmission failure, Faulty Transmission Control Module (TCM).
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 5,533

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 Feb 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P278F Description

The Transmission Control Module (TCM) monitors the Clutch 'B' Adaptive Learning. The TCM sets the OBDII code when the TCM detects an anomaly in the Clutch 'B' Adaptive Learning system.

OBDII Code P278F - Clutch 'B' Adaptive Learning at Limit - AutoCodes.com — P278F Code - Clutch 'B' Adaptive Learning at Limit

What does this mean?

What are the Possible Causes of the DTC P278F?

Low transmission fluid
Internal mechanical transmission failure
Faulty Transmission Control Module (TCM)

How to Fix the DTC P278F?

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 P278F 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 Help with the Code?

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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 P278F Code

1. What does OBDII code P278F mean?

P278F indicates that the transmission control module (TCM) has detected that Clutch 'B' has reached its adaptive learning limit, which may affect its ability to operate correctly.

2. What are common symptoms of the P278F code?

Symptoms may include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, or the illumination of the check engine light.

3. What causes the P278F code to appear?

Common causes include worn clutch components, low or contaminated transmission fluid, a faulty transmission control module, or issues with the hydraulic system.

4. Can driving with the P278F code damage my vehicle?

Yes, driving with this code can lead to further transmission damage if the underlying issue is not addressed promptly.

5. How is the P278F code diagnosed?

Technicians typically use a scan tool to verify the code, check transmission fluid condition and level, inspect for mechanical wear, and test the TCM for proper operation.

6. What repairs can fix the P278F code?

Repairs may include replacing worn clutch components, flushing and refilling the transmission fluid, repairing hydraulic system issues, or reprogramming or replacing the TCM.

7. Can low transmission fluid cause the P278F code?

Yes, low or contaminated transmission fluid can cause the TCM to struggle with clutch adaptation, triggering the code.

8. Is the P278F code specific to any vehicle make or model?

No, P278F is a generic OBDII code, but the specific causes and repair steps may vary depending on the make and model of the vehicle.

9. How much does it cost to repair the P278F code?

Repair costs vary widely, ranging from $100 for a fluid change to over $1,000 for clutch or TCM replacement, depending on the severity of the issue.

10. Can I reset the P278F code without fixing the problem?

You can clear the code temporarily, but it will likely return unless the underlying issue is resolved. Ignoring the problem may lead to more severe damage over time.