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 the engine is having trouble with cylinder number 4. It's not working as well as the other cylinders, kind of like if one person in a group isn't pulling their weight.
The engine control module (ECM) detects that cylinder 4 is not contributing to the engine's power as expected.
The P0272 code indicates that the ECM has detected an imbalance in the power contribution from cylinder 4. This can be due to issues such as improper fuel delivery, poor compression, or ignition problems.
• Check Engine Light illuminated
• Rough idling
• Decreased engine performance
• Faulty fuel injector in cylinder 4
• Ignition coil or spark plug issues
• Low compression in cylinder 4
ECM: Engine Control Module, the computer responsible for engine management.
Compression Test: A test to measure the pressure in the engine's cylinders to assess their condition.
• Use a scan tool to verify the code and check for other related codes.
• Perform a visual inspection of cylinder 4 components.
• Conduct a compression test on cylinder 4.
• Replace or clean the fuel injector for cylinder 4.
• Replace the spark plug or ignition coil for cylinder 4.
• Repair any mechanical issues causing low compression.
• OBD-II scan tool
• Compression tester
• Multimeter
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance and tune-ups
• Use high-quality fuel
• Ensure timely replacement of spark plugs
Engine Performance
• Avoid driving with a rough engine to prevent further damage.
• Seek professional diagnosis if unsure about the repair.
Check with your vehicle manufacturer for powertrain warranty coverage.
This code has been commonly reported in vehicles with higher mileage due to wear and tear on engine components.
Moderate – It should be addressed soon to avoid further engine damage.
Driving with this code can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in idle or low-speed conditions
Cylinder 4 is typically located on the right bank of the engine, but the exact location can vary depending on the engine configuration.
Q: Can I drive with a P0272 code?
A: It's not recommended to drive for extended periods with this code, as it can cause further engine damage.
Q: How do I know if cylinder 4 is the problem?
A: A mechanic can perform tests such as a compression test or inspect the fuel injector and ignition components to confirm the issue.
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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.