In a Hyundai, the check engine light comes on as shortly as the onboard diagnostic mechanism (OBD) detects an issue with the engine, Evaporative Emission regulate System (EVAP), or transmission. 

What go the inspect Engine Light median oEngine Light median on a Hyundai?


When your Hyundai inspect engine light comes on, it way the Onboard Diagnostic System has detected a trouble with the engine, emission, or transmission. A fault code gets save in the Engine manage Module (ECM) and retriengine light comes on, it method the Onboard Diagnostic System has actually detected a problem with the engine, emission, or transmission. A fault code gets save on computer in the Engine regulate Module (ECM) and retrieved through a diagnostic scanner via the OBD-II port under the dashboard. 

If the ECM, sometimes called ECU, has recognize a error code and triggered the inspect Engine light (CEL) / company Engine Light, don"t necessarily i think an engEngine irradiate (CEL) / organization Engine Light, don"t necessarily i think an engine problem.

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The problem can be emission-related, and the auto may journey fine. 

The diagnostics process"s first step is to check out the error codes via the OBD-II harbor under the dashboard.

You deserve to read the codes you yourself or have an auto mechanic.

An auto mechanic or dealer technicians use committed equipment (OBD-II scanners) to review the code from the car"s computer system (ECU) via the OBD port.

How come Reset Hyundai check Engine LightEngine Light


Diagnosing Hyundai engine error codes is easy.

A Hyundai owner have the right to read Hyundai engine fault codes utilizing an OBD-II scanner connected to the OBD-II harbor under the dashboard (see accuse below).

Locate the OBD-II port. This is a sixteen-pin port situated under the dashboard on the driver"s side.
Plug her OBD2 scanner right into the OBD-II 16-pin port.

Turn the key on. Every the dash lights should turn on. Don"t begin the engine.


Read error codes.

Fix the difficulties you uncovered in action five, reconnect the scanner, and select clear Fault codes. 

Fix the trouble that caused the check engine light. You have the right to use the scanner to clean the password or journey the automobile for a pair of days, and also the light will revolve off after 4 or five driengine light. You can use the scanner to clear the code or journey the auto for a pair of days, and also the irradiate will turn off after 4 or five driving cycles.

Common difficulties that cause the check engine irradiate engine irradiate on a Hyundai

EVAP System

Typically once the Hyundai inspect engine is on, but the car drives fine, you most likely have actually an Evaporative Emission regulate System (EVAP) code.

EVAP is provided to protect against gasoline vapors indigenous escaping into the fuel tank and also fuel system atmosphere.

In many instances that the check engine light turns ON in a Hyundai (Elantra, Sonata, Santa Fe, Aengine light turns ON in a Hyundai (Elantra, Sonata, Santa Fe, Accent), the car may still drive perfectly fine. This happens once you have an emissions-related problem.

The problem here might be miscellaneous as basic as a loose gas cap.

Retightening or replacing the gas cap frequently will fix the check engine lightengine light.

If the trouble is a loosened or defective gas cap and also you resolve that problem, the examine engine irradiate will revolve off top top its own, typically in a couengine light will revolve off ~ above its own, usually in a couple of days.

Related error codes:

Hyundai inspect engine light flashinengine light flashing, blinking.

If her Hyundai check engine lightengine light is flashing and the car is shaking, that way that you have actually a serious engine malfunction, and you have to avoid driving your car.

Check engine irradiate flashing and also blinking is a an outcome of an engengine light flashing and blinking is a result of one engine misfire.

Replacing the spark plugs and spark plug wires is every you have to fix this problem.

In some cases, the examine engine light may flash as result of a poor ignition cengine light might flash because of a poor ignition coil as well.

All these room easy and inexpensive repairs and can it is in performed by any kind of DIYer.

Don"t proceed to journey a Hyundai that has actually triggered the examine engine light and is shakiengine light and also is shaking; you may cause serious damage to the engine.

Not just that, yet if you space driving in heavy traffic, your engine will overheat.

Related fault codes:

Check Engine light on / No Engine light on / No Acceleration

If her Hyundai will certainly not accelerate and the check engine light is on, it is an extremely likely the a faulty throttle posiengine irradiate is on, it is really likely the a faulty throttle place sensorsensor.

Under these conditions, the auto will barely relocate or not accelerate at all.

Replacing the throttle place sensor is easy and can be completed by any DIYer in less than onesensor is easy and can be perfect by any kind of DIYer in less than one hour.

Fault codes related to Hyundai CEL on, the car won"t accelerate.

P2135 Throttle/pedal position sensor/switch A/B voltage correlation

P2106 FORD throttle Actuator regulate System - Forced restricted Power

P2127 Throttle/Pedal place Sensor/Switch "E" Circuit Low

P2138 Throttle/Pedal place Sensor/Switch "D"/"E" Voltage

Hyundai inspect engine lightengine light and also ESC on

If both the inspect engine light and the ESC irradiate come on, this meaengine light and also the ESC light come on, this means that the accelerator pedal position switch (eBay link) has failed.

In such cases, the car will lose all power.

Pressing the gas pedal to the floor will certainly not change engine RPMs. The automobile won"t accelerate, yet you can acquire your automobile up to 20 MPH.

Try restarting the vehicle as this might fix this difficulty temporarily.

Hyundai selling a redesigned accelerator pedal position switch that should fix this problem.

Replacing the sensor in ~ the dealer or a fix shop costs between $200-$450.

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Installing a used Hyundai Accelerator Pedal (eBay link) is another feasible solution.