AutoCodes – Generic – P3106

P3106 Code - Cylinder 2 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 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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: P3106 indicates Cylinder 2 High-Pressure Fuel Injector Low Side Circuit High.
Common causes: Common causes include Faulty Fuel Injector 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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 1,890

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 P3106 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 P3106 - Cylinder 2 High-Pressure Fuel Injector Low Side Circuit High - AutoCodes.com — P3106 Code - Cylinder 2 High-Pressure Fuel Injector Low Side Circuit High

What does this mean?

What are the Possible Causes of the DTC P3106?

Faulty Fuel Injector 2
Fuel Injector 2 harness is open or shorted
Fuel Injector 2 circuit poor electrical connection
Faulty Digital Motor Electronics (DME)

How to Fix the DTC P3106?

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 P3106 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 P3106 code?

Need more information on how to fix the P3106 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P3106 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P3106 BMW — Cylinder 2 High-Pressure Fuel Injector Low Side Circuit High
P3106 MINI — Cylinder 2 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 P3106 Code

1. What are common symptoms of OBDII code P3106 (Cylinder 2 High-Pressure Fuel Injector Low Side Circuit High)?

The common symptoms of P3106 may include rough idling, decreased fuel efficiency, and potential misfires in cylinder 2.

2. What are the possible causes of OBDII code P3106?

Potential causes of P3106 include a faulty high-pressure fuel injector in cylinder 2, wiring issues in the fuel injector circuit, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the cause of OBDII code P3106?

To diagnose P3106, you can use a scan tool to monitor the fuel injector operation, inspect the wiring and connectors for damage, and perform a resistance test on the fuel injector circuit.

4. Can a dirty fuel injector cause OBDII code P3106?

Yes, a dirty or clogged high-pressure fuel injector in cylinder 2 can lead to low side circuit high issues and trigger code P3106.

5. What should I do if I encounter OBDII code P3106?

If you encounter P3106, it is recommended to address the issue promptly to prevent potential engine damage. Seeking professional diagnosis and repair is advisable.

6. Is it safe to drive with OBDII code P3106?

It is not recommended to drive with OBDII code P3106 present, as it can lead to engine performance issues and potentially cause further damage if left unresolved.

7. Can I reset OBDII code P3106 and see if it comes back?

While you can clear the code temporarily, it is crucial to address the underlying issue causing P3106 to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code P3106?

The cost of repairing P3106 can vary depending on the exact cause, but it may involve replacing the faulty fuel injector, repairing wiring issues, or addressing ECM problems.

9. Are there any preventative measures to avoid OBDII code P3106?

Regular maintenance, including fuel system cleaning and using quality fuel, can help prevent issues with high-pressure fuel injectors that may trigger P3106.

10. Can a DIY enthusiast fix OBDII code P3106 at home?

While some DIY enthusiasts may have the skills to diagnose and repair P3106, dealing with fuel system components and wiring can be complex, so it is advisable to seek professional assistance if unsure.