AutoCodes – MINI – P3155 MINI

P3155 MINI Code - Cylinder 3 High-Pressure Fuel Injector High Side Circuit Low

Quick Answer

The solenoid-controlled injection valve discharges a high-pressure spray into the combustion chamber. Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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: P3155 MINI indicates Cylinder 3 High-Pressure Fuel Injector High Side Circuit Low.
Common causes: Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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 1,666

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 16, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P3155 MINI Description

The solenoid-controlled injection valve discharges a high-pressure spray into the combustion chamber. The solenoid-controlled injection valve is a retracting-plunger valve characterized by a high level of flexibility in its spray-propagation pattern (angle and shape). The discharge orifices form the high-precision injection pattern. This provides even and consistent propagation. The retracting-plunger solenoid-controlled injection valve continues to maintain stable propagation properties, even at the temperatures and pressure levels encountered within the combustion chamber. Fuel is injected into the combustion chambers under high pressure (between 50 and 200 bar) during the intake and compression strokes. During the warm-up phase yet another, a minute quantity of fuel is injected to assist the catalytic converter to reach its effective operating temperature more quickly (catalytic converter heating). During cold starting, the fuel is sprayed during the compression stroke in multiple pulses. This strategy provides reliable cold-starts along with substantive improvements in the areas of pollutant emissions and fuel consumption.
The Digital Motor Electronics (DME) diagnosis monitors the activation of the high voltage side of the fuel injector. The Diagnostic Trouble Code (DTC) is detected when there is a short circuit to ground.

OBDII Code P3155 MINI - Cylinder 3 High-Pressure Fuel Injector High Side Circuit Low - AutoCodes.com — P3155 MINI Code - Cylinder 3 High-Pressure Fuel Injector High Side Circuit Low

What does this mean?

What are the Possible Causes of the DTC P3155 MINI?

Faulty Fuel Injector 3
Fuel Injector 3 harness is open or shorted
Fuel Injector 3 circuit poor electrical connection
Faulty Digital Motor Electronics (DME)

How to Fix the DTC P3155 MINI?

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

BMW Diagnostic Trouble Code (DTC): 110301

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P3155 MINI 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?

Get the P3155 MINI 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 P3155 MINI Code

1. What are the common symptoms of OBDII code P3155 in a MINI vehicle?

The common symptoms of OBDII code P3155 in a MINI include rough idling, engine misfires, decreased fuel efficiency, and potentially a check engine light.

2. What can cause the OBDII code P3155 to trigger in a MINI?

The OBDII code P3155 in a MINI is typically triggered by issues with the high-pressure fuel injector on cylinder 3, such as a wiring fault, a faulty fuel injector, or a problem with the high-pressure fuel system.

3. How serious is the OBDII code P3155 in a MINI?

The OBDII code P3155 in a MINI can lead to poor engine performance and fuel economy. It is important to address this issue promptly to prevent further damage to the engine.

4. How can I diagnose the OBDII code P3155 in my MINI?

Diagnosing the OBDII code P3155 in a MINI involves using a diagnostic scanner to read the fault code, inspecting the high-pressure fuel injector on cylinder 3, and checking the wiring and connections related to the injector.

5. Can I still drive my MINI with the OBDII code P3155 present?

It is not recommended to drive your MINI with the OBDII code P3155 present, as it can lead to engine performance issues and potential damage. It's best to address the issue as soon as possible.

6. How can I repair the OBDII code P3155 in my MINI?

Repairing the OBDII code P3155 in a MINI may involve replacing the high-pressure fuel injector on cylinder 3, repairing any wiring faults, or addressing issues with the high-pressure fuel system.

7. Is it possible to reset the OBDII code P3155 in my MINI without fixing the underlying issue?

While you can clear the fault code using a diagnostic scanner, it is not recommended to do so without addressing the underlying issue causing the code. The problem may persist and potentially cause more damage.

8. Are there any preventive maintenance tips to avoid the OBDII code P3155 in a MINI?

To prevent the OBDII code P3155 in a MINI, it's important to follow the manufacturer's recommended maintenance schedule, use high-quality fuel, and address any engine performance issues promptly.

9. Can a DIY enthusiast fix the OBDII code P3155 in a MINI?

Depending on your skill level and experience, you may be able to address the OBDII code P3155 in a MINI as a DIY project. However, complex issues involving the high-pressure fuel system may require professional assistance.

10. How much does it typically cost to repair the OBDII code P3155 on a MINI?

The cost to repair the OBDII code P3155 on a MINI can vary depending on the underlying issue. Factors such as parts and labor costs, the extent of the repair needed, and whether professional assistance is required can impact the overall cost.