How To Fix Hyundai Check Engine Light

Whether you drive a Hyundai Grand i10, Tucson, Accent, Elantra, Sonata, Venue, Kona, Creta, Santa Fe, or Palisade. We would go on to discuss the various ways that can help you fix the issue of the check engine light on Hyundai.

The common reason your Hyundai check engine light comes on includes damaged spark plugs, damaged ignition coils, faulty 02 sensors, faulty airflow sensor, and a damaged catalytic converter.

Here in this article, we would briefly discuss how to fix Hyundai check engine light issues.

How To Fix Hyundai Check Engine Light

Replace Gas Cap

The most common reason the check engine light on Hyundai comes on is a loose, broken, or missing gas cap. A loose gas would lead to fuel evaporation which may affect your vehicle emission system or engine. Make sure you tighten a loose gas cap or replace a damaged gas cap as required.

Replace Spark Plug

The function of the spark plug is to create a spark that is enough to start the car engine. Overheating and carbon build-up decreases the lifespan of a spark plug and this can trigger the check engine light to come on your dashboard, A damaged spark plug often leads to your car engine taking too long to respond, a decreased acceleration, and an engine misfire. Therefore ensure to check and replace damaged spark plugs.

Faulty Ignition Coils

The Ignition Coil is part of your vehicle ignition system. It converts the voltage from the car battery to the required amount of volts enough to trigger the spark plug which ignites the engine air-fuel mixture.

The check engine light will turn on, whenever your car detects a faulty ignition system, You can use a multimeter to test the ignition coils of your car or use a spark tester to check the ignition coil.

Replace Oxygen Sensor

A faulty oxygen sensor is one the most common reason the check engine light Hyundai comes on your dashboard. The oxygen sensor measures the concentration of oxygen in the exhaust gas and it sends this information to the electronic control unit The oxygen sensor also adjusts the air-fuel ratio when required and it determines the performance of the catalytic converters.

The oxygen sensor often gets damaged due to its exposure to the hot air coming from the exhaust gas. A faulty oxygen sensor would trigger the check engine light to turn on, as it would fail to send information to the electronic control system and this could lead to increased fuel consumption, emission failures, rough engine sounds, overheating engine, and poor gas mileage.

Replace Mass Airflow Sensors

The mass airflow sensor measures the quantity of air that enters the engine cylinder. It is usually installed between the air filter and the intake manifold of your engine. A faulty airflow sensor will increase emissions and can cause the car to stall out. Ensure you replace the air filter and a damaged airflow sensor,

A faulty mass airflow sensor can lead to your car engine running on too much fuel and less air or too much air and less fuel. Which will trigger the check engine light to turn on due to your Hyundai car engine failing to operate on a balanced air-fuel ratio.

Replace Catalytic Converter

A catalytic converter is part of the engine exhaust system and serves as an exhaust emission control device. Its function is to convert toxic gases and pollutants coming from your engine into less-toxic pollutants.

The catalytic converter of your vehicle can get clogged with material, and a failed or clogged catalytic converter would affect fuel economy and the performance of your vehicle.

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Hyundai Check Engine Light Reset

You can automatically reset your Hyundai check engine light by using an OBD-II diagnostic tool. Follow these steps to reset your Hyundai check engine light:

Locate the OBD-II diagnostic connector port in your Hyundai vehicle. You can locate the connector close to the steering wheels under the driver-side dashboard.
Firmly connect the OBD 2 dongle with the connector port.
Turn the ignition key to the on position but ensure you don’t start the engine of your Hyundai vehicle. The led light on the OBD II dongle should now begin to blink.
Launch the diagnostic software then choose between the Bluetooth, WiFi, or USB connection options.
Navigate to the Trouble codes tab. Navigate to diagnostic trouble codes and Freezer frame to get more detailed information.
Depending on your OBD II software device. Click on clear the diagnostic trouble codes button in the trouble codes view or click the reset trouble codes and MIL button.
The reset command will be sent to your vehicle and your Hyundai check engine light will be cleared.

You can also manually reset your Hyundai check engine light by disconnecting the negative battery cable. Follow these steps to manually reset your Hyundai check engine light:

Turn off the ignition. Put on your safety glasses and gloves for protection.
Differentiate between the negative and positive terminals of your car battery. The negative terminal has a black cap and a negative (–) symbol.
While the positive terminal has a red cap and a positive (+) symbol.Then loosen the nut on the negative terminal with a wrench and pull the negative connector away from the battery.
Leave it out for 30 to 60 seconds.
Now reconnect the negative terminal and tighten it back with your wrench.
This should finally reset the check engine light of your Hyundai vehicle.

Hyundai Check Engine Light Car Shaking

An engine misfire is a reason your vehicle starts shaking while you are driving. The car engine runs on a balanced air-fuel mixture, with good compression and adequate spark. The common causes of engine misfire include bad spark plugs, faulty fuel injectors, low engine compression, wrong air/fuel mixture, low fuel pressure, bad ignition coil or distributor, and intake manifold gasket leaks.

Other causes of shaking Hyundai car includes suspension issues, low engine oil level, low automatic transmission fluid level, broken engine mount, and vacuum leaks.

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Hyundai Check Engine Light Codes

P1100 Manifold absolute pressure (MAP) sensor – EGR – circuit malfunction
P1102 Manifold absolute pressure (MAP) sensor – EGR mode 3
P1103 Manifold absolute pressure (MAP) sensor – EGR mode 2
P1106 Manifold absolute pressure (MAP) sensor – signal high
P1107 Manifold absolute pressure (MAP) sensor – signal low P1110 Electronic throttle system (ETS) – malfunction
P1111 Intake air temperature (IAT) sensor- circuit low input/intermittent
P1112 Intake air temperature (IAT) sensor- circuit high input/intermittent
P1114 Engine coolant temperature (ECT) sensor – signal malfunction
P1115 Engine coolant temperature (ECT) sensor – signal malfunction
P1118 Throttle motor – malfunction P1123 Long term fuel trim – additive – mixture too rich
P1124 Long term fuel trim -additive – mixture too lean
P1127 Long-term fuel trim – system too rich
P1128 Long-term fuel trim – system too lean
P1134 Heated oxygen sensor (H02S) 1, bank 1 – slow response
P1140 Engine load monitoring (MAFfrP) -signals not plausible
P1147 Accelerator pedal position (APP) sensor 1 – circuit malfunction
P1151. Accelerator pedal position (APP) sensor 2 – circuit malfunction
P1152 Accelerator pedal position (APP) sensor 2 – low voltage
P1153 Accelerator pedal position (APP) sensor 2 – high voltage
P1154 Heated oxygen sensor (H02S) 1, bank 2 – slow response
P1155 Electronic throttle system (ETS) – malfunction
P1159 Intake manifold air control, target position – malfunction
P1166 Heated oxygen sensor (H02S) 1, bank 1 – control limit reached
P1167 Heated oxygen sensor (H02S) 1, bank 2- control limit reached
P1168 Heated oxygen sensor (H02S) 2, bank 1, heater control – circuit malfunction
P1169 Heated oxygen sensor (H02S) 2, bank 2, heater control – circuit malfunction
P1171 Electronic throttle system (ETS), WOT – malfunction
P1172 ETS throttle motor – abnormal current
P1173 ETS throttle motor – abnormal voltage
P1174 Electronic throttle system (ETS), closed throttle 1 – malfunction
P1175 Electronic throttle system (ETS), closed throttle 2 – malfunction
P1176 ETS throttle motor – circuit 1 malfunction
P1177 ETS throttle motor – circuit 2 malfunction
P1178 Electronic throttle system (ETS) relay – malfunction
P1184 Heated oxygen sensor (H02S) 1, bank 2 – no activity detected
P1191 Electronic throttle system (ETS), limp-home valve – malfunction
P1192 Electronic throttle system (ETS) – limp-home valve ON
P1193 Electronic throttle system (ETS) – limp-home valve ON
P1194 Electronic throttle system (ETS) – limp-home valve ON
P1195 Electronic throttle system (ETS) – limp-home valve ON
P1196 Electronic throttle system (ETS) – limp-home valve ON
P1295 Electronic throttle system (ETS) – circuit malfunction
P1307 Rough road sensor – malfunction
P1308 Rough road sensor – voltage low
P1309 Rough road sensor – voltage high
P1330 Ignition spark timing – malfunction
P1372 Vehicle speed sensor (VSS) – range/performance problem
P1400 Exhaust gas recirculation (EGR) system – monitor malfunction
P1401 Fuel tank leakage diagnostic module -system malfunction
P1402 Fuel tank leakage diagnostic module – motor malfunction
P1403 Fuel tank leakage diagnostic module – valve malfunction
P1404 Fuel tank leakage diagnostic module – heater malfunction
P1440 Evaporative emission (EVAP) system, vent valve – circuit malfunction
P1502 Wheel speed sensor – open circuit
P1503 Cruise control switch – circuit malfunction
P1504 Cruise control switch, CANCEL – circuit malfunction
P1505 Idle air control (lAC) valve – opening coil circuit – open circuit
P1506 Idle air control (lAC) valve – opening coil circuit – short circuit
P1507 Idle air control (lAC) valve – closing coil circuit – open circuit
P1508 Idle air control (lAC) valve – closing coil circuit – short circuit
P1510 Idle air control (lAC) valve – circuit malfunction – open/short circuit
P1511 Idle air control {lAC) valve – circuit malfunction – open/short circuit
P1513 Idle air control (lAC) valve – opening coil circuit – short circuit
P1515 Idle air control (lAC) valve – coil 1 – signal malfunction
P1516 Idle air control {lAC) valve – coil 2 – signal malfunction
P1520 Alternator – FR terminal malfunction
P1521 Power steering pressure (PSP) switch – circuit malfunction
P1523 Intake manifold air control solenoid
P1529 Transmission control module (TCM) – communication
P1550 Knock sensor (KS) – signal malfunction
P1552 Idle air control (lAC) valve – closing coil circuit – short circuit
P1553 Idle air control (lAC) valve – closing coil circuit – open circuit
P1560 Knock sensor (KS) – signal malfunction
P1586 AT coding – signal not plausible
P1602 Transmission control module (TCM) – serial communication problem
P1605 G-force sensor – circuit malfunction
P1606 G-force sensor – signal not plausible
P1607 Engine control module (ECM)/electronic throttle system (ETS) – communication malfunction
P1608 Electronic throttle system (ETS)/engine control module (ECM) – communication malfunction
P1609 Immobilizer control module – malfunction
P1611 MIL request signal – circuiVvoltage low
P1613-D MIL request signal – circuiVvoltage high
P1613-9 Electronic throttle system (ETS), controller- malfunction
P1614-B MIL request signal – circuiVvoltage high
P1614-9 Electronic throttle system (ETS), EEPROM RJW – malfunction
P1615 Electronic throttle system (ETS), controller- malfunction
P1616 Engine control relay – circuit malfunction
P1618 Engine torque control – limit reached/exceeded
P1623 Malfunction indicator lamp (MIL) – circuit malfunction
P1624 Engine coolant blower motor relay -low-speed circuit malfunction
P1624 Transmission control module (TCM) – system malfunction
P1625 Engine coolant blower motor relay – high-speed circuit malfunction
P1632 CAN data bus OFF P1632 Traction control system – malfunction
P1642 Engine control module (ECM) – non immobilizer/incorrect type
P1665 Ignition power stage A – circuit malfunction
P1670 Ignition power stage B – circuit malfunction
P1690 Immobilizer system – malfunction
P1691 Immobilizer system – antenna malfunction
P1693-0 Transmission control module (TCM) MIL request circuit – circuit malfunction
P1693-fJ Immobilizer system – transponder malfunction
P1694 Immobilizer system – ECM signal malfunction
P1695 Immobilizer system – ECM EPROM malfunction
P1696 Immobilizer system – ECM EPROM malfunction
P1707 Cruise control, brake pedal position (BPP) switch – circuit malfunction
P1715 AT pulse generators – open circuitP1750 AT – shift control solenoids
P1765 Transmission control module (TCM) – torque reduction malfunction

How To Fix Hyundai Check Engine Light