AutoCodes – Generic – P3114

P3114 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 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 1,026

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
Cost to Diagnose
FAQs
Comments
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Code P3114 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 - Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High - AutoCodes.com — P3114 Code - Cylinder 4 High-Pressure Fuel Injector Low Side Circuit High

What does this mean?

What are the Possible Causes of the DTC P3114?

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?

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 P3114 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 P3114 code?

Need more information on how to fix the P3114 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P3114 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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

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 Code

1. What are common symptoms of OBDII code P3114?

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

2. What are the possible causes of OBDII code P3114?

- Possible causes of this code include a faulty fuel injector, wiring issues, a clogged fuel injector, or a problem with the fuel injector driver circuit.

3. How can I diagnose the underlying issue causing OBDII code P3114?

- To diagnose the issue, you may need to perform a thorough inspection of the fuel injector, test the injector with a multimeter, check the wiring for any damage, and use a scan tool to monitor the fuel injector circuit.

4. Can a dirty fuel injector cause OBDII code P3114?

- Yes, a clogged or dirty fuel injector can lead to insufficient fuel delivery, triggering the P3114 code.

5. What is the recommended repair for OBDII code P3114?

- The recommended repair may involve cleaning or replacing the faulty fuel injector, repairing any damaged wiring, or addressing issues with the fuel injector driver circuit.

6. How serious is OBDII code P3114?

- While the severity of the code may vary, it is important to address it promptly to prevent further damage to the engine and ensure optimal vehicle performance.

7. Can I drive my vehicle with OBDII code P3114?

- It is not recommended to drive your vehicle with this code present, as it can lead to engine performance issues and potential damage if left unresolved.

8. Are there any preventive maintenance tips to avoid OBDII code P3114?

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

9. How much does it typically cost to repair OBDII code P3114?

- The cost of repairing this code can vary depending on the underlying issue, but it may involve a few hundred dollars for parts and labor.

10. Can resetting the OBDII system clear the P3114 code?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

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