Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the fuel injector for cylinder 5 in your car's engine. It isn't working as fast as it should, which could make the engine run poorly.
The engine control module (ECM) has detected that the time it takes for the low side booster of the high-pressure injector on cylinder 5 to activate is not within the expected range.
The P3119 code indicates an issue with the high-pressure fuel injector's low side booster circuit for cylinder 5. The ECM monitors the time it takes for the injector to reach the required pressure and operate correctly. If the time is outside the specified parameters, this code is triggered.
• Engine misfire
• Reduced engine performance
• Increased fuel consumption
• Check Engine Light illuminated
• Faulty high-pressure injector for cylinder 5
• Wiring issues in the injector circuit
• Malfunctioning ECM
• Fuel delivery problems
ECM: Engine Control Module, the computer that controls engine functions.
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 5's injector.
• Test the injector's resistance and operation.
• Check the ECM for any faults.
• Replace or repair the wiring to the injector.
• Replace the high-pressure injector for cylinder 5.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Fuel pressure tester
$200 - $600
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance of the fuel system
• Using high-quality fuel
• Periodic inspection of the injector wiring
Engine Performance
• Avoid driving with this issue for long periods.
• Get the vehicle inspected by a professional mechanic.
Check with your vehicle manufacturer for warranty coverage on fuel injectors.
This code has been associated with injector issues in vehicles with direct fuel injection systems.
Moderate – While the vehicle may still be drivable, it can lead to further engine damage if not addressed.
Driving with an engine misfire can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The high-pressure injector for cylinder 5 is located on the engine's cylinder head, near the intake manifold.
Q: Can I drive my car with a P3119 code?
A: It's not recommended to drive for long periods with this code, as it can cause further engine damage.
Q: How serious is a P3119 code?
A: It's moderately serious. It can affect engine performance and should be addressed soon.
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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.
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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.