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Code P3107

Quick reference

P3107 at a glance

Plain-language meaning
This code means that the car's computer found a problem with the fuel injector for cylinder 2. It's like a tiny hose that sprays fuel into the engine, and it's not working right.
Urgency
Moderate – It should be addressed soon to avoid further engine performance issues.
Difficulty
Moderate
System
Engine Performance
Tools mentioned
OBD-II scanner, Multimeter, Fuel injector tester

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer found a problem with the fuel injector for cylinder 2. It's like a tiny hose that sprays fuel into the engine, and it's not working right.

Explanation

The engine control module (ECM) has detected an issue with the timing of the low side booster for the high-pressure injector in cylinder 2.

Technical description

P3107 indicates that the ECM has detected an error in the timing of the low side booster circuit for the high-pressure fuel injector in cylinder 2. This could be due to an electrical fault or a mechanical issue within the injector itself.

Symptoms

• Check Engine Light (CEL) is on

• Poor engine performance

• Increased fuel consumption

Common Causes

• Faulty fuel injector in cylinder 2

• Wiring issues or poor connections

• ECM malfunction

Glossary

ECM: Engine Control Module

Injector: A device that sprays fuel into the engine

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for cylinder 2 injector.

• Test the injector for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty injector.

• Reprogram or replace the ECM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Fuel injector tester

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Vehicle 1

• Vehicle 2

• Vehicle 3

Preventive measures

• Regular maintenance of fuel system

• Check and clean injectors periodically

• Ensure quality fuel is used

Error code type

Engine Performance

User experience recommendations

• Avoid driving with the check engine light on.

• Get the vehicle inspected by a professional.

• Regularly maintain the fuel system.

Warranty information

Check with your vehicle manufacturer for warranty coverage on fuel injectors.

Historical data

This code has been associated with injector issues in certain vehicle models, leading to recalls and service bulletins.

Urgency level

Moderate – It should be addressed soon to avoid further engine performance issues.

Testing conditions

• Engine running

• Vehicle at operating temperature

Component location

The high-pressure fuel injector for cylinder 2 is located on the engine, typically near the intake manifold.

FAQs

Q: Can I drive with a P3107 code?
A: It's not recommended to drive for long periods with this code as it can lead to engine performance issues.

Q: How do I clear a P3107 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is resolved first.

Optional diagnostic gear

Tools that may help diagnose P3107

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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