AutoCodes – Generic – P0278

P0278 Code - Cylinder 6 Contribution/Balance Fault

Quick Answer

Code P0278 is triggered when the Engine Control Module (ECM) detects that the acceleration rate of the crankshaft for Cylinder 6 was less than a calibrated amount. Common causes include Dirty Fuel Injector 6, Faulty Fuel Injector 6, Plugged Fuel Injector 6. 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: P0278 indicates Cylinder 6 Contribution/Balance Fault.
Common causes: Common causes include Dirty Fuel Injector 6, Faulty Fuel Injector 6, Plugged Fuel Injector 6.
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 21,354

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 02, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0278 Description

Code P0278 is triggered when the Engine Control Module (ECM) detects that the acceleration rate of the crankshaft for Cylinder 6 was less than a calibrated amount. During normal conditions, the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.

OBDII Code P0278 - Cylinder 6 Contribution/Balance Fault - AutoCodes.com — P0278 Code - Cylinder 6 Contribution/Balance Fault

What does this mean?

What are the Possible Causes of the DTC P0278?

Dirty Fuel Injector 6
Faulty Fuel Injector 6
Plugged Fuel Injector 6
Fuel injector 6 harness is open or shorted
Fuel injector 6 circuit poor electrical connection

How to Fix the DTC P0278?

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

Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0278 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 P0278 code?

Need more information on how to fix the P0278 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0278 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0278 Audi — Cylinder 6 Contribution Balance
P0278 Ford — Cylinder 6 Injector Contribution/Balance Fault
P0278 Mercedes-Benz — Cylinder 6 Contribution/Balance Fault
P0278 Volkswagen — Cylinder 6 Contribution Balance

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 P0278 Code

1. What is OBDII code P0278?

OBDII code P0278 refers to a Cylinder 6 Contribution/Balance Fault. It indicates an issue with the fuel injector or related components in the sixth cylinder of the engine.

2. What are the common symptoms of a Cylinder 6 Contribution/Balance Fault (P0278) code?

Common symptoms of this code may include rough idling, misfires, loss of power, decreased fuel efficiency, and potentially an illuminated check engine light.

3. What are the possible causes of OBDII code P0278?

The possible causes of a Cylinder 6 Contribution/Balance Fault (P0278) code include a faulty fuel injector in cylinder 6, wiring issues, poor electrical connection, or a problem with the engine control module (ECM).

4. How can I diagnose a Cylinder 6 Contribution/Balance Fault (P0278) code?

Diagnosis typically involves using a scan tool to read the code and perform tests to pinpoint the exact cause. This may include checking the fuel injector, inspecting wiring for damage, and testing the ECM.

5. Can I still drive my vehicle with OBDII code P0278?

It is not recommended to drive with a Cylinder 6 Contribution/Balance Fault (P0278) code as it can lead to further engine damage and poor performance. It is best to address the issue promptly.

6. What are the repair options for OBDII code P0278?

Repair options for this code may include replacing the faulty fuel injector, repairing or replacing damaged wiring, ensuring proper electrical connections, and resetting the ECM after the issue is resolved.

7. Can a DIY enthusiast fix OBDII code P0278 at home?

While some experienced DIY enthusiasts may be able to address this code at home, diagnosing and repairing a Cylinder 6 Contribution/Balance Fault (P0278) code often requires specialized tools and knowledge, so professional assistance may be necessary.

8. How much does it cost to fix OBDII code P0278?

The cost of fixing a Cylinder 6 Contribution/Balance Fault (P0278) code can vary depending on the exact cause of the issue, labor rates in your area, and the cost of parts. It's advisable to get estimates from local mechanics or repair shops.

9. What happens if OBDII code P0278 is ignored?

Ignoring a Cylinder 6 Contribution/Balance Fault (P0278) code can lead to increased fuel consumption, engine misfires, potential damage to the catalytic converter, and ultimately engine failure if left unresolved.

10. How can I prevent OBDII code P0278 from recurring?

To prevent the recurrence of this code, it's essential to perform regular maintenance on your vehicle, use high-quality fuel, keep the fuel system clean, and address any issues promptly to avoid further damage.