2022 Hyundai Tucson Check Engine Light

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Hyundai Tucson Check Engine Light

The 2022 Hyundai Tucson Check Engine Light is a marvel of modern automotive engineering, known for its style, comfort, and advanced features. However, like all vehicles, it’s not immune to occasional issues, and one of the most common concerns among Tucson owners is the appearance of the dreaded “” (CEL). In this comprehensive blog post, we will delve into all aspects of the 2022 Hyundai Tucson check engine light, from understanding what it signifies to troubleshooting tips and answering frequently asked questions.

1: Understanding the 2022 Hyundai Tucson Check Engine Light

The 2022 Hyundai Tucson Check Engine Light, often abbreviated as CEL, is a dashboard warning indicator that illuminates when your Tucson onboard computer system detects a problem related to the engine or its associated systems. While the light itself doesn’t provide specific details about the issue, it serves as a general warning that something needs attention.

2: Common Causes of the 2022 Hyundai Tucson Check Engine Light:

Some of the most common issues that can cause the 2022 Hyundai Tucson check engine light include

2.1: Oxygen Sensor Failure

Oxygen Sensor 1024x393 2

One of the most common reasons for the check engine light to come on in any vehicle is when there is a problem with the oxygen sensor. The oxygen sensor’s role is to oversee the oxygen levels in the exhaust system and make necessary adjustments to the fuel injection process based on its readings. If the oxygen sensor of your vehicle is not functioning correctly, the engine will not operate efficiently, and the check engine light will come on.

2.2: Loose or Damaged Gas Cap

Damaged Gas Cap 1024x393 1

The gas cap is an essential part of any vehicle’s fuel system. The gas cap helps to maintain the fuel pressure and prevent gas from evaporating into the air. When the gas cap is either loose or damaged, it can lead to the activation of the check engine light. This is one of the easiest problems to fix, as you simply need to tighten the gas cap.

2.3: Catalytic Converter Failure

Catalytic Converter Failure

The catalytic converter is an integral part of your vehicle’s emissions system. Its main role is to convert harmful gases into less harmful ones before they are discharged into the environment. When the catalytic converter fails, it can cause the 2022 Hyundai Tucson Check Engine Light to come on. Signs of a deteriorating catalytic converter may encompass diminished acceleration, decreased fuel efficiency, and the emission of an odor resembling sulfur.

2.4: Malfunctioning Mass Airflow Sensor

The MAF is responsible for determining how much air is entering the engine and adjusting the fuel injection accordingly. A malfunctioning Mass Airflow (MAF) sensor can be a trigger for the 2022 Hyundai Tucson  Engine Light illuminate. Symptoms of a faulty mass airflow sensor can include reduced acceleration, rough idle, and poor gas mileage.

2.5: Bad Ignition Coils

The ignition coils have the crucial role of generating the spark essential to ignite the fuel within the engine. If the ignition coils are failing, it has the potential to activate the 2022 Hyundai Tucson Check Engine Light. Symptoms of bad ignition coils can include reduced engine power, shaking or vibrating while driving, and difficulty starting the engine.

3: 2022 Hyundai Tucson check engine light codes:

The 2022 Hyundai Tucson Check Engine Light can be illuminated for various reasons, and these reasons are often associated with specific diagnostic trouble codes (DTCs). When the CEL comes on, it’s essential to retrieve these codes using an OBD-II (On-Board Diagnostics) scanner or a diagnostic tool. These codes provide valuable information about the issue affecting your vehicle. Here are some common check engine light codes that you may encounter in a 2022 Hyundai Tucson:

3.1: P0300: Random/Multiple Cylinder Misfire Detected:

This code indicates that the engine has detected misfires in multiple cylinders, which can lead to poor performance and increased emissions.

3.2: P0301, P0302, P0303, P0304, etc.—Cylinder Misfire Detected:

These codes specify which cylinder is experiencing a misfire, allowing for a more precise diagnosis and repair.

3.3: P0420: Catalyst System Efficiency:

This code suggests that the catalytic converter is not functioning as efficiently as it should, often due to issues with oxygen sensors or the converter itself.

3.4: P0442: Evaporative Emission Control System Leak Detected:

This code indicates a potential leak in the vehicle’s evaporative emissions control system, often caused by loose or damaged components.

3.5: P0455: Evaporative Emission Control System Leak Detected:

Similar to P0442, but indicating a larger leak in the evaporative emissions control system.

3.6: P0500: Vehicle Speed Sensor Malfunction:

This code points to a problem with the vehicle speed sensor, which can affect the accuracy of speed-related functions such as the speedometer and transmission shifting.

3.7: P0562: System Voltage Low:

This code suggests that the vehicle’s electrical system voltage is lower than expected, which can lead to various electrical and sensor-related issues.

3.8: P0700 Transmission Control System Malfunction:

This code indicates that the transmission control module has detected a problem within the transmission system.

3.9: P1443: Malfunction Evaporative Emission Control System Control Valve:

This code typically relates to issues with the control valve in the evaporative emissions system.

3.10: P2096, Post-Catalyst Fuel Trim System:

This code indicates that the fuel mixture after the catalytic converter is too lean, potentially causing increased emissions.

4: Hyundai Tucson check engine light blinking

When you see your Hyundai Tucson’s check engine light blinking, it is important to take immediate action. First, start by checking for any loose connections and ensuring that all the wiring has been properly installed. If the light continues to blink, then it may be an issue with your vehicle’s emissions system. It could also indicate a problem with your fuel delivery system or an issue with the spark plugs.

4.1: Diagnosing the Problem

If you’re faced with a blinking check engine light, here’s how you can go about diagnosing the problem:

Step 1: Observe Other Symptoms

Pay attention to your Hyundai Tucson’s behaviour. Is it running rough? Are you noticing a decrease in your fuel efficiency? Note any unusual noises or vibrations.

Step 2: Use an OBD-II Scanner

Invest in an OBD-II scanner if you don’t already have one. This handy tool can read the error codes stored in your vehicle’s computer system. These codes provide valuable insights into the issue.

Step 3: Consult a Mechanic

If you’re not comfortable diagnosing the problem yourself, it’s best to consult a qualified mechanic. They can perform a thorough inspection and pinpoint the exact issue.

4.2: Solutions to a Blinking Check Engine Light

Once you’ve identified the problem, it’s time to explore possible solutions:

Replace Faulty Components: If the issue is related to components like spark plugs, ignition coils, or oxygen sensors, consider replacing them to restore your vehicle’s performance.

Read Also: How To Reset the Check Engine Light on Hyundai Tucson?


The check engine light can activate due to various factors, but the five most common reasons in a 2022 Hyundai Tucson are a faulty oxygen sensor, a failing catalytic converter, a loose or damaged gas cap, a malfunctioning mass airflow sensor, and bad ignition coils. While certain problems can be straightforwardly resolved, others may necessitate the expertise of a professional mechanic. Hence, it is advisable to bring your vehicle to an authorized Hyundai dealership or a qualified mechanic for the diagnosis and resolution of the issue. Keep in mind that neglecting the check engine light can exacerbate the issue, potentially resulting in more substantial and costly repairs in the future.


Q1: Why is the check engine light on in my 2017 Hyundai Tucson? 

A: The check engine light in your 2017 Hyundai Tucson can come on for a variety of reasons. It’s a warning that there may be an issue with the engine or emissions system. To determine the exact cause, you should have the trouble codes read using an OBD-II scanner. Common triggers include sensor malfunctions, exhaust system problems, or fuel system issues.

Q2: What should I do if the check engine light is illuminated in my 2016 Hyundai Tucson?

If the check engine light is on in your 2016 Hyundai Tucson, follow these steps:

  • First, check for any immediate issues, such as a loose gas cap or visible damage.
  • If there are no obvious problems, have the trouble codes read with an OBD-II scanner.
  • Once you have the trouble codes, consult a mechanic to diagnose and repair the specific issue.

Q3: Can I continue driving my Hyundai Tucson with the check engine light on? 

A: It’s generally safe to drive your 2022 Hyundai Tucson  with a steady (non-blinking) check engine light. However, it’s essential to have the issue diagnosed and repaired as soon as possible to avoid potential damage or reduced fuel efficiency. If the check engine light is blinking, it indicates a severe problem, and you should avoid driving and have your vehicle towed to a mechanic.

Q4: How much does it cost to diagnose and fix CEL issues?

A: The cost of diagnosing and fixing CEL issues can vary widely depending on the problem’s complexity and location. Minor problems, such as a loose fuel cap or a malfunctioning sensor, can often be resolved without significant expense. However, more significant engine problems may require a more substantial investment in parts and labor. It’s essential to get a professional assessment to determine the precise cost.

Q5: Can I reset the 2022 Hyundai Tucson Check Engine Light myself?

A: While it is possible to clear the2022 Hyundai Tucson Check Engine Light using an OBD-II scanner, it’s crucial to address the underlying issue first. Resetting the light without fixing the problem won’t resolve anything, and the 2022 Hyundai Tucson Check Engine Light is likely to reappear.

Q6: Will the CEL turn off by itself?

A: In some cases, if the issue causing the CEL to illuminate resolves itself (e.g., a loose gas cap), the light may turn off after a few driving cycles. However, it’s always best to diagnose and fix the problem to ensure the continued health and performance of your Tucson.

Q7: Is the check engine light covered under warranty?

A: Hyundai typically offers a limited warranty that covers certain engine components. However, the specific coverage may vary depending on your vehicle’s age and mileage. It’s advisable to consult your owner’s manual or contact your Hyundai dealership to determine if your particular issue is covered.

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