2016 Honda Accord Has A Check Engine Light

Resolve Check Engine Light Issues in Your 2016 Honda Accord

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Emissions System
0%
60% chance it's
Something else
The most common reasons a 2016 Honda Accord has a check engine light are an emissions system component, a sensor, or a catalytic converter.
  • Emissions System: A faulty emissions system component, such as an oxygen sensor or EGR valve, can lead to increased emissions and trigger the check engine light.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2016 Honda Accord has a check engine light?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A faulty oxygen sensor is one of the most common causes of a check engine light. Symptoms may include a decrease in fuel mileage, hesitation or misfiring from the engine, rough idling or even stalling. A faulty sensor may cause the vehicle to fail an emissions test.

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

Due to the nature of electrical systems on modern vehicles, the range of problems these can cause are nearly limitless. However, there is a way to categorize them in two ways. Permanent and intermittent problems. Permanent problems appear and remain. This may be the vehicle will not start, the radio does not work, or the door chime will not turn off among many, many others. These problems are more straight-forward to diagnose since they present themselves at all time. This means there will always be a fault to find. Intermittent electrical problems, however, can be difficult or impossible to locate, since they appear then disappear without warning. The best case scenario for an intermittent issue is when replicating the problem is easily accomplished and understood. This allows a technician to make an issue semi-permanent, allowing them to find the fault. Other issues that come and go without warning and cannot be replicated on demand must occur when the technician is servicing the vehicle, otherwise there is no problem to correct. It is most important to understand that electrical system faults always require inspection, and can include the vehicle working in any manner, or not working at all.

Like we noted in the last section, general diagnosis symptoms are the most vague of the bunch. There are several diagnostic spectrums, electrical diagnosis, drivability diagnostics, engine diagnostics, transmission diagnostics, and the list could continue for about 5 or 10 more spectrums of diagnostics. The most important take-away here, is that general diagnostics are diagnostics that have no other spectrum in which they fit, or the problem is unknown. This means that any vehicle left outside of a repair facility with the keys and an authorization to perform diagnosis will be diagnosed under the general diagnosis spectrum.

When the Check Engine Light comes on, you may experience engine performance issues such as poor acceleration, rough idling, or an engine that won't start. In some cases, no abnormal symptoms will be experienced. Other systems like the transmission or ABS can cause the Check Engine Light to illuminate and lights for those systems can come on at the same time. Similar lights may say "Check Engine Soon", "Malfunction Indicator Light" or just "Check". In rare case the engine can overheat.

What are the initial diagnostic steps to take for a check engine light on a 2016 Honda Accord?

When faced with a check engine light on your 2016 Honda Accord, it's essential to adopt a systematic diagnostic approach. Start by checking the gas cap; a loose or damaged cap is a common culprit that can easily trigger the light. Next, examine your dashboard for any additional warning indicators, as these can provide valuable context about the underlying issue. A visual inspection under the hood is also crucial; look for any obvious signs of damage to wires, hoses, or connectors that could be affecting your vehicle's performance. If these initial checks do not resolve the issue, using an OBD-II scanner can be a game-changer. This tool allows you to retrieve specific error codes that can help you identify the problem more accurately. Don't forget to consult your owner's manual for insights on the error codes and potential solutions. If, after these steps, the check engine light remains illuminated and the cause is still unclear, it may be time to seek professional help to ensure your vehicle is diagnosed and repaired correctly. By following this structured approach, you can effectively narrow down the potential causes of the check engine light and take informed steps toward resolving the issue.

What are the common problems that could cause the check engine light to illuminate in a 2016 Honda Accord?

When the check engine light illuminates in a 2016 Honda Accord, it serves as a crucial alert for drivers, especially those inclined towards DIY repairs. Understanding the common problems that can trigger this warning light is essential for effective troubleshooting. One of the most frequent causes is a loose gas cap, which can lead to fuel evaporation; simply tightening or replacing the cap can often resolve the issue. Another common culprit is a faulty oxygen sensor, which not only affects fuel efficiency but can also increase emissions, making it vital to replace if malfunctioning. Additionally, issues with the catalytic converter, spark plugs, or ignition coils can result in engine misfires, prompting the check engine light to activate. A malfunctioning mass airflow sensor can disrupt the engine's air-fuel mixture, while a faulty EGR valve may lead to improper emissions control. Other potential triggers include thermostat malfunctions, vacuum leaks, and problems with the battery or charging system. By being aware of these common issues, DIY enthusiasts can take informed steps to diagnose and potentially fix the problems, ensuring their Honda Accord operates smoothly and efficiently.

How urgent is it to address the check engine light in a 2016 Honda Accord?

When the check engine light in your 2016 Honda Accord begins to flash, it is a clear signal that immediate action is required. This urgent warning suggests that a critical malfunction is occurring, which, if ignored, could result in severe damage to your engine or other vital components. Even if the light remains steadily on without flashing, it still indicates a problem that should not be overlooked. While it may seem less pressing, addressing the underlying issue promptly is essential to avoid escalating repairs and potential safety hazards. Common culprits for the check engine light include vacuum leaks, O2 sensor failures, and issues with spark plugs or gas caps. Therefore, whether the light is flashing or simply illuminated, it is crucial to prioritize a diagnostic inspection to ensure your Honda Accord remains safe and reliable on the road.

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