Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car's engine has a problem with one of its cylinders, specifically the second one, when using a different type of fuel like natural gas or ethanol. It's like one of the cylinders isn't working properly when the car tries to use a special kind of fuel.
This code indicates that the engine's control module has detected a misfire in cylinder 2 when the vehicle is using an alternative fuel source.
The P2E5A code is triggered when the engine control module (ECM) detects a misfire in cylinder 2 while the engine is operating on an alternative fuel source. This misfire can be due to issues with fuel delivery, ignition, or compression specific to the alternative fuel system.
• Rough engine idle
• Decreased fuel efficiency
• Check engine light illuminated
• Faulty spark plug in cylinder 2
• Issues with the alternative fuel injector for cylinder 2
• Compression problems in cylinder 2
Cylinder: A chamber within the engine where fuel combustion occurs.
Misfire: A failure of the air/fuel mixture in a cylinder to ignite properly.
• Check the spark plug in cylinder 2
• Inspect the alternative fuel injector for cylinder 2
• Perform a compression test on cylinder 2
• Replace the spark plug in cylinder 2
• Repair or replace the alternative fuel injector for cylinder 2
• Address any compression issues in cylinder 2
• OBD-II scanner
• Spark plug wrench
• Compression tester
$150 - $500
Moderate
• Chevrolet Impala CNG
• Ford F-150 CNG
• Honda Civic GX
• Regular maintenance of spark plugs
• Routine inspection of fuel injectors
• Ensure alternative fuel system is serviced regularly
Engine Performance
• Avoid using alternative fuel until the issue is resolved
• Consult with a professional mechanic for diagnosis and repair
Check with your vehicle manufacturer; misfires may be covered under powertrain warranty.
Misfire codes have been common in vehicles using alternative fuels due to differences in combustion characteristics.
Moderate – It should be addressed soon to prevent further engine damage.
Driving with a misfire can lead to increased emissions and potential engine damage.
• Engine running on alternative fuel
• Engine at operating temperature
Cylinder 2 is typically located on the engine block, second in the firing order.
Q: Can I drive my car with this code?
A: It's not recommended as it can lead to further damage and increased emissions.
Q: What is an alternative fuel?
A: Alternative fuels include natural gas, ethanol, and other non-gasoline fuels.
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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.