The check engine light on your 2022 Hyundai Tucson Plug-In Hybrid might come on for various reasons, and determining the root cause could be tricky. However, it’s essential to resolve the problem as soon as possible to prevent more significant damage. Apart from affecting the fuel economy and the overall performance of the vehicle, ignoring the warning light could lead to expensive repairs in the long run. In this article, we’ll uncover the potential causes of the check engine light in a 2022 Hyundai Tucson Plug-In Hybrid.
1: Common Causes of the Hyundai Tucson Plug-In Hybrid Check Engine Light
Some of the most common issues that can cause the Hyundai Tucson Plug-In Hybrid Check Engine Light include:
1.1: Oxygen Sensor Failure:
A faulty oxygen sensor in your 2022 Hyundai Tucson Plug-In Hybrid could cause the check engine light to come on. The oxygen sensor of your car determines the amount of oxygen in the exhaust and alerts your vehicle’s computer system if there’s an imbalance. A malfunctioning oxygen sensor could lead to reduced fuel economy, increased emissions, and damage to other engine components.
1.2: Loose Gas Cap:
One of the most common reasons for the check engine light to come on in a 2022 Hyundai Tucson Plug-In Hybrid is a loose gas cap. A loose gas cap allows fuel vapours to leak and causes the vehicle to fail an emission test. Although it might seem like a minor problem, a loose gas cap could lead to decreased fuel economy and potential damage to other engine components.
1.3: Catalytic Converter Failure:
The catalytic converter in a 2022 Hyundai Tucson Plug-In Hybrid converts harmful emissions into less harmful gases before they exit the vehicle’s exhaust system. If your catalytic converter is harmed or not operating properly, it can trigger the check engine light to illuminate.
1.4: Malfunctioning Ignition System:
The ignition system in your 2022 Hyundai Tucson Plug-In Hybrid consists of several components that work together to start the engine. If one of these components fails, such as the spark plugs or ignition coil, the check engine light will come on, and your vehicle’s performance will be affected. A malfunctioning ignition system could also cause your car to stall and fail to start altogether.
1.5: Faulty Mass Airflow Sensor:
The mass airflow sensor in your 2022 Hyundai Tucson Plug-In Hybrid gauges the amount of air entering the engine and then fine-tunes the fuel injection accordingly. If the mass airflow sensor in your vehicle is not working correctly, it can result in the check engine light turning on, which may also lead to reduced fuel efficiency and a rough idle.
1.6: Transmission Issues:
Some transmission-related problems, such as sensor failures or excessive slippage, can cause the check engine light to illuminate.
1.7: Battery or Charging System Problems:
Voltage-related issues, including a weak or failing battery, alternator problems, or issues with the electrical system, can trigger warning lights, including the check engine light.
1.8: Hybrid System Concerns:
Given that the Hyundai Tucson Plug-In Hybrid is a hybrid vehicle, issues related to the hybrid system, such as the high-voltage battery or powertrain control module, can lead to check engine light activation.
2: Hyundai Tucson Plug-In Hybrid Check Engine Light Codes
The Check Engine Light (CEL) in a Hyundai Tucson Plug-In Hybrid can illuminate for various reasons, often linked to specific diagnostic trouble codes (DTCs). When the CEL activates, it’s crucial to retrieve these codes using an OBD-II (On-Board Diagnostics) scanner or diagnostic tool. These codes offer valuable insights into the issue affecting your vehicle. Below are some common Check Engine Light codes you may encounter in a Hyundai Tucson Plug-In Hybrid.
1. P0300 – Random/Multiple Cylinder Misfire Detected: This code indicates that the engine is misfiring at random or multiple cylinders. It could be due to various issues, such as spark plug problems, fuel delivery issues, or a faulty ignition system.
2. P0420 – Catalyst System Efficiency Below Threshold: This code suggests that the catalytic converter may not be operating efficiently.
3. P0113 – Intake Air Temperature Sensor Circuit High Input: This code typically points to a problem with the intake air temperature sensor or its circuit. It may affect engine performance and fuel efficiency.
4. P0123 – Throttle/Pedal Position Sensor/Switch ‘A’ Circuit High Input: This code indicates an issue with the throttle position sensor or its circuit. It can affect throttle response and engine performance.
5. P0456 – Evaporative Emissions System Small Leak Detected: This code suggests that there may be a small leak in the vehicle’s evaporative emissions system.
6. P0606 – PCM Processor Fault: This code indicates a problem with the powertrain control module (PCM), which is the engine’s computer. It could be a software or hardware issue within the PCM.
7. P0A7A – Hybrid Powertrain Control Module Requested MIL Illumination: This code is specific to hybrid vehicles and indicates that the hybrid powertrain control module has requested the check engine light to be illuminated. It often requires diagnosis by a trained technician with hybrid experience.
2: Hyundai Tucson plug-in hybrid check engine light reset
Resetting the check engine light on a Hyundai Tucson Plug-In Hybrid typically involves addressing the issue that triggered the light in the first place. It’s important to note that simply resetting the check engine light without addressing the underlying problem will not fix the issue and may result in the light returning.
Here are the general steps to reset the check engine light:
1. Check for Underlying Issues:
Before attempting to reset the check engine light, it’s essential to diagnose and address the problem that triggered it. Use an OBD-II scanner to retrieve the trouble code(s) associated with the check engine light. This will help you understand the specific issue that needs attention.
2. Repair the Problem:
Once you’ve identified the problem using the trouble code(s), you or a qualified mechanic should proceed with the necessary repairs. This could involve replacing faulty components sensors or addressing other issues related to the engine or emissions system.
3. Ensure Proper Repairs:
After the repairs are completed, it’s crucial to ensure that the problem has been resolved and that the vehicle is running correctly. Verify that there are no remaining issues before proceeding.
4. Disconnect the Battery (Temporary Reset):
If you want to clear the check engine light temporarily after addressing the issue, you can disconnect the negative terminal of the vehicle’s battery. Keep in mind that this will also reset other settings in your vehicle, such as the clock and radio presets. Here’s how:
a. Ensure the ignition is turned off. b. Locate the negative terminal of the battery (usually marked with a minus (-) sign). c. Use a wrench or socket set to loosen and disconnect the negative terminal. d. Leave the battery disconnected for about 15-30 minutes to allow the vehicle’s computer to reset. e. Reattach the negative terminal and make sure it is tightened securely.
5. Drive the Vehicle:
After reconnecting the battery, start the vehicle and take it for a short drive. This will allow the onboard computer to run various diagnostic checks. If the issue has been successfully resolved, and there are no more problems detected, the check engine light may turn off.
6. Use an OBD-II Scanner (Optional):
To confirm that the issue has been resolved and the check engine light is off, You can utilize an OBD-II scanner to examine and retrieve trouble codes. If no codes are present and the check engine light is off, the issue is likely resolved.
Keep in mind that resetting the check engine light without addressing the underlying issue is not a long-term solution and may lead to further problems down the road. It’s advisable to identify and fix the underlying problem to ensure the vehicle functions correctly and complies with emissions regulations.
3: 2022 Hyundai Tucson Plug-In Hybrid Check Engine Light Flashing
The flashing Check Engine Light in your 2022 Hyundai Tucson Plug-In Hybrid can be an indication of a serious problem. Among the reasons for a flashing Check Engine Light include problems with the battery pack, damaged spark plugs, clogged air filters, and malfunctioning sensors, among others. A blinking Check Engine Light may also indicate that the engine is experiencing misfires or overheating.
If the Check Engine Light starts flashing, it is essential to identify the cause of the problem as soon as possible and take the proper measures. The initial action is to consult the owner’s manual for any warning indicators or messages, as they might offer clues about the issue’s origin. If you cannot find any information in the manual, you may take the car to an authorized Hyundai repair shop.
Also Read: Transmission Problems but No Check Engine Light: What Can Cause This?
4: Conclusion:
In conclusion, the check engine light on your 2022 Hyundai Tucson Plug-In Hybrid could come on for various reasons, including oxygen sensor failure, a loose gas cap, catalytic converter failure, a malfunctioning ignition system, or a faulty mass airflow sensor. While some of these issues might seem minor, ignoring the warning light could lead to more significant problems. Therefore, it’s essential to address the problem as soon as possible and avoid potential damage, costly repairs, and complex emissions tests.
5: FAQs
Q: What is the engine warning light on a Hyundai Tucson Hybrid?
A: The engine warning light on a Hyundai Tucson Hybrid is an indicator that alerts you to potential issues with the vehicle’s engine or related systems. When this light is illuminated, it signifies that the vehicle’s computer has detected a problem that needs attention.
Q: How many miles can you drive with the Hyundai Tucson Plug-In Hybrid Check Engine Light?
A: The number of miles you can drive with the Check Engine Light on depends on what is causing it. If the issue is minor, such as a dirty air filter, then driving for a few miles should be fine and will not cause any additional damage. However, if an issue like faulty spark plugs or malfunctioning sensors is causing the light to come on, then it is best to get the issue checked and repaired as soon as possible.
Q: How much does it cost to get the engine light checked?
A: The cost of getting the Check Engine Light checked can vary depending on the make and model of your Hyundai Tucson Plug-In Hybrid. Generally speaking, though, you should expect to pay between $80-$120 for a diagnostic inspection. Additionally, if repairs are necessary, the cost of parts and labour may be extra. It is important to note that in some cases, depending on the type of repair needed, you may qualify for a rebate or tax credit, which can help offset some of the costs.
Q: Why is my Hyundai Tucson Plug-In Hybrid’s check engine light blinking?
A: A blinking check engine light usually indicates a severe and potentially damaging problem with your vehicle’s engine or emissions system. It’s a warning that requires immediate attention.
Q: Is the repair covered by warranty for a Hyundai Tucson Plug-In Hybrid?
A: If your vehicle is still under warranty, some repairs may be covered. Check your vehicle’s warranty documentation and consult your Hyundai dealership for warranty details and coverage.
Q: Can I drive my Hyundai Tucson Plug-In Hybrid after the issue is fixed?
A: Once the issue is resolved and the check engine light is no longer blinking, you should be able to drive your vehicle safely. However, it’s essential to continue regular maintenance and address any future check engine light warnings promptly.
