AutoCodes – MINI – P3114 MINI

P3114 MINI Code - Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High

Quick Answer

The solenoid-controlled injection valve discharges a high-pressure spray into the combustion chamber. Common causes include Faulty Fuel Injector 4, Fuel Injector 4 harness is open or shorted, Fuel Injector 4 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: P3114 MINI indicates Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High.
Common causes: Common causes include Faulty Fuel Injector 4, Fuel Injector 4 harness is open or shorted, Fuel Injector 4 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 663

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 15, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P3114 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 low voltage side of the fuel injector. The Diagnostic Trouble Code (DTC) is detected when there is a short circuit to B+.

OBDII Code P3114 MINI - Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High - AutoCodes.com — P3114 MINI Code - Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High

What does this mean?

What are the Possible Causes of the DTC P3114 MINI?

Faulty Fuel Injector 4
Fuel Injector 4 harness is open or shorted
Fuel Injector 4 circuit poor electrical connection
Faulty Digital Motor Electronics (DME)

How to Fix the DTC P3114 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): 110402

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P3114 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 P3114 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 P3114 MINI Code

1. What are the common symptoms of OBDII code P3114 for a MINI Cooper?

The common symptoms of code P3114 include rough idling, engine misfires, loss of power, and potentially poor fuel efficiency.

2. What can cause the OBDII code P3114 in a MINI Cooper?

The code P3114 in a MINI Cooper is typically caused by issues with the high-pressure fuel injector in cylinder 4, such as a faulty injector, wiring problems, or a bad fuel injector driver module.

3. How can I diagnose the high-pressure fuel injector low side circuit issue in cylinder 4 of my MINI Cooper?

Diagnosing the high-pressure fuel injector low side circuit issue involves checking the injector itself for proper operation, inspecting the wiring and connections for any damage, and using a scan tool to monitor injector performance.

4. Can a clogged fuel injector cause OBDII code P3114 in a MINI Cooper?

Yes, a clogged fuel injector can lead to a high-pressure fuel injector low side circuit issue in cylinder 4, triggering code P3114 in a MINI Cooper.

5. What are some repair tips for fixing OBDII code P3114 in a MINI Cooper?

Repair tips for addressing code P3114 may include cleaning or replacing the faulty fuel injector, repairing any damaged wiring, ensuring proper electrical connections, and clearing the trouble code with a diagnostic tool after the repair.

6. Is it safe to continue driving my MINI Cooper with OBDII code P3114 present?

It is not recommended to continue driving your MINI Cooper with code P3114 present, as it can lead to engine performance issues and potential damage if left unresolved.

7. Can I reset the OBDII code P3114 in my MINI Cooper by disconnecting the battery?

While disconnecting the battery may clear the code temporarily, it is not a permanent solution. It is important to diagnose and address the underlying issue causing code P3114 to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code P3114 in a MINI Cooper?

The cost of repairing code P3114 in a MINI Cooper can vary depending on the root cause of the issue, the needed parts, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P3114 in a MINI Cooper?

While some DIY enthusiasts may have the skills to address code P3114, it is a complex issue that may require specialized tools and expertise. It is advisable to seek professional help for proper diagnosis and repair.

10. Will OBDII code P3114 cause my MINI Cooper to fail an emissions test?

Yes, having code P3114 present in your MINI Cooper can potentially cause it to fail an emissions test due to the impact on engine performance and fuel delivery. It is important to address the issue before undergoing emissions testing.