Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that there's a problem with the electrical part of the fuel injector for cylinder 4 in your car. It's like when a toy's battery is running low and it doesn't work right.
The code indicates an issue with the electrical circuit that controls the fuel injector for cylinder 4, specifically that the voltage is lower than expected.
The P3113 code is triggered when the Engine Control Module (ECM) detects a low voltage condition in the low side circuit of the high-pressure fuel injector for cylinder 4. This can affect the injector's ability to deliver the correct amount of fuel to the engine.
• Engine misfire
• Poor fuel economy
• Check Engine Light illuminated
• Faulty fuel injector
• Wiring issues in the injector circuit
• Malfunctioning ECM
ECM: Engine Control Module
Injector: A device that sprays fuel into the engine's cylinders
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for cylinder 4 injector.
• Test the injector for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty injector.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Fuel injector tester
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance of the fuel system
• Periodic inspection of wiring harnesses
• Use quality fuel to prevent injector clogging
Engine Performance
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult a professional mechanic for accurate diagnosis and repair.
Check with your vehicle manufacturer for warranty coverage on fuel system components.
This code has been associated with injector circuit issues in various models, often due to wiring problems.
Moderate – It should be addressed soon to prevent engine performance issues.
Driving with a misfiring engine can lead to increased emissions and may not comply with emissions regulations.
• Engine at operating temperature
• Vehicle stationary or in a safe testing environment
The fuel injector for cylinder 4 is located on the engine, typically near the intake manifold.
Q: Can I drive with a P3113 code?
A: It's not recommended to drive with this code as it can lead to engine performance issues.
Q: How do I know if my injector is faulty?
A: Symptoms like engine misfires, poor fuel economy, and a check engine light can indicate a faulty injector.
High-End · Full-system diagnostics
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.
View on Amazon
Universal · Digital multimeter
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
Universal · Wire connectors and 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 AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
View options on Amazon
Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.