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 part of the car that helps put fuel into one of the engine's cylinders. It's like a straw that's supposed to deliver juice but is blocked or disconnected.
The code indicates an issue with the electrical circuit responsible for controlling the fuel injector for cylinder 6. This could be due to an open circuit or a problem in the wiring or connections.
The P319C code is triggered when the Engine Control Module (ECM) detects an open circuit or a low voltage condition in the low side circuit of the hydrogen injector for cylinder 6. This could be due to a wiring issue, a faulty injector, or a problem with the ECM itself.
• Engine misfire
• Poor fuel economy
• Check Engine Light illuminated
• Faulty fuel injector
• Open or shorted wiring in the injector circuit
• Faulty ECM
ECM: Engine Control Module, the computer that controls the engine.
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 6 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
• Basic hand tools
$150 - $600
Moderate
• Toyota Mirai
• Hyundai Nexo
• Honda Clarity
• Regular maintenance checks
• Ensure clean fuel supply
• Inspect wiring and connectors periodically
Engine Performance
• Avoid driving long distances until repaired.
• Consult a professional mechanic.
Check with the vehicle manufacturer for warranty coverage on fuel injectors.
This code is more common in vehicles with advanced fuel systems, such as hydrogen fuel cell vehicles.
Moderate – Addressing this issue promptly can prevent further engine damage.
Driving with this code may lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in park or neutral
The fuel injector for cylinder 6 is located on the engine block, typically on the side or top of the cylinder head.
Q: Can I drive with a P319C code?
A: It's not recommended to drive for long distances with this code, as it can lead to engine damage.
Q: How can I reset the P319C code?
A: You can reset the code using an OBD-II scanner, but it's important to fix the underlying issue first.
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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.
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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.
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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.