AutoCodes – BMW – P3114 BMW

P3114 BMW 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 BMW 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 726

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

What does this mean?

What are the Possible Causes of the DTC P3114 BMW?

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 BMW?

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 BMW 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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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 BMW Code

1. What are the common symptoms of OBDII code P3114 in a BMW related to the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High issue?

- Common symptoms include rough idling, decreased fuel efficiency, engine misfires, and potential loss of power.

2. What are the possible causes of OBDII code P3114 in a BMW triggering the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High fault?

- Possible causes include a faulty fuel injector, wiring issues in the fuel injector circuit, a clogged fuel injector, or problems with the fuel injector control module.

3. How can I diagnose the OBDII code P3114 in a BMW indicating the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High problem?

- Diagnosis involves using a diagnostic scanner to read the code, inspecting the wiring and connectors related to the fuel injector, and testing the fuel injector for proper operation.

4. What repairs or actions can be taken to fix OBDII code P3114 related to the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High in a BMW?

- Repairs may include replacing the faulty fuel injector, repairing any damaged wiring or connectors, cleaning a clogged fuel injector, or resetting the fuel injector control module.

5. Can I continue driving my BMW with OBDII code P3114 indicating the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High issue?

- It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly.

6. How much does it typically cost to repair OBDII code P3114 in a BMW caused by the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High problem?

- Repair costs can vary widely depending on the specific cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

7. Are there any preventive maintenance tips to avoid encountering OBDII code P3114 related to the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High in a BMW?

- Regularly servicing the fuel system, using high-quality fuel, and addressing any engine performance issues promptly can help prevent this code from occurring.

8. How urgent is it to address OBDII code P3114 in a BMW linked to the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High fault?

- It is important to address this issue as soon as possible to prevent further damage to the engine and ensure optimal vehicle performance and fuel efficiency.

9. Can a DIY enthusiast with automotive knowledge fix OBDII code P3114 in a BMW caused by the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High problem?

- Depending on the level of expertise and access to tools, a DIY enthusiast may be able to diagnose and possibly repair this issue. However, professional assistance is often recommended for accurate diagnosis and proper repairs.

10. How long does it typically take to repair OBDII code P3114 related to the Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High in a BMW?

- The repair time can vary based on the exact cause of the issue and the complexity of the repair needed. It may take a few hours to a full day to complete the repair.