Why is My Acura Check Engine Light On?
Acura Check Engine Light Diagnosis
At West Side Acura, we do more than just sell vehicles—we’re here to support you throughout your Acura ownership experience. If your check engine light comes on, don’t ignore it. Bring your vehicle in for a quick diagnostic scan and expert service from our factory-trained technicians.
What To Do When Your Acura’s Check Engine Light Comes On
Not all check engine lights are created equal. If the light is flashing, it usually signals a severe issue—such as an engine misfire—that can cause long-term damage if you continue driving. In that case, pull over safely and call us right away.
If the light is solid and your vehicle seems to be driving normally, it may not be urgent, but it still requires attention. Book a service appointment as soon as possible to prevent potential damage or performance issues.
Common Reasons Your Check Engine Light May Be On
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Missed Maintenance
Routine maintenance—like oil changes, air filter replacements, and tune-ups—helps prevent engine issues. Skipping service can lead to misfires, poor performance, and an illuminated check engine light.
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Faulty Oxygen Sensor
A worn or failed O2 sensor can cause your engine to run too rich or lean, increasing fuel consumption and emissions. Ignoring it can damage your catalytic converter, leading to expensive repairs.
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Worn Spark Plugs or Ignition Components
Over time, spark plugs, wires, and ignition coils wear out—causing engine misfires and rough idling. A simple tune-up often resolves these issues and clears the check engine light.
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Dirty Mass Air Flow (MAF) Sensor
A clogged air filter can lead to a dirty MAF sensor, disrupting the air-fuel ratio and triggering drivability problems. Cleaning or replacing the sensor typically resolves the issue.
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Failed Thermostat
A stuck-open thermostat may prevent the engine from warming up properly, while a stuck-closed one can cause overheating. Either way, the system detects the issue and activates the check engine light.
Book Your Engine Light Diagnostic Today
A check engine light isn’t something to ignore—get the peace of mind you deserve with help from our certified Acura technicians. Using the latest diagnostic tools, we accurately identify and resolve issues quickly, providing transparent service, genuine Acura parts, and expert care to get your vehicle back to peak performance.