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 electrical part that helps squirt fuel into the engine for cylinder number 5. It's like when a toy's battery is not working well, and the toy doesn't work right.
The engine control module (ECM) has detected a low voltage condition in the fuel injector circuit for cylinder 5.
The P0273 code indicates that the ECM has detected a low voltage condition in the injector circuit for cylinder 5. This can be due to an electrical issue such as a short to ground, a poor connection, or a faulty injector.
• Engine misfire
• Rough idle
• Reduced engine performance
• Faulty fuel injector
• Wiring issues such as a short or open circuit
• Bad connection at the injector or ECM
ECM: Engine Control Module, the computer that controls the engine.
Injector: A device that sprays fuel into the engine's cylinders.
• Inspect the fuel injector and its wiring for damage.
• Check the electrical connections to the injector.
• Use a multimeter to test the injector circuit for continuity and proper voltage.
• Repair or replace damaged wiring or connectors.
• Replace the faulty fuel injector.
• Ensure all connections are secure and free from corrosion.
• Multimeter
• OBD-II scanner
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect and maintain fuel injector connections.
• Use high-quality fuel to prevent injector clogging.
• Perform regular vehicle maintenance checks.
Engine Performance
• Do not ignore the check engine light.
• Get the vehicle inspected by a professional mechanic if unsure.
• Regular maintenance can prevent these issues.
Check with your vehicle manufacturer; injectors may be covered under powertrain warranty.
Injector circuit codes have been common with modern vehicles due to the complexity of electronic fuel injection systems.
Moderate – Addressing this issue promptly can prevent further engine damage.
Driving with a misfiring engine can lead to increased emissions and potential engine damage.
• Engine running
• Under load conditions
The fuel injector for cylinder 5 is located on the engine, typically on the intake manifold or cylinder head.
Q: Can I drive with a P0273 code?
A: It's not recommended to drive for long periods with this code, as it can lead to engine damage.
Q: How can I prevent injector issues?
A: Regular maintenance and using quality fuel can help prevent injector problems.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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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.