AutoCodes – Hyundai – C2420 Hyundai

C2420 Hyundai Code - Motor Temperature Sensor High Input

Quick Answer

The Electro Hydraulic Power Steering (EHPS) is assistance steering ability system uses an electrical motor that generates oil pressure not to use the Engine power. Common causes include Contamination of Oil/Clog of Oil path, Faulty Motor Pump Unit (MPU), Motor Pump Unit (MPU) harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
C2420 Hyundai indicates Motor Temperature Sensor High Input.
Common causes
Common causes include Contamination of Oil/Clog of Oil path, Faulty Motor Pump Unit (MPU), Motor Pump Unit (MPU) harness is open or shorted.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 958
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code C2420 Hyundai Description

The Electro Hydraulic Power Steering (EHPS) is assistance steering ability system uses an electrical motor that generates oil pressure not to use the Engine power. The Temperature Sensor is installed in the Motor Pump Unit (MPU) in order to measure oil temperature, This sensor uses a thermistor whose resistance changes according to the temperature changes. The MPU ECU perform limit current control to prevent from over-heating and motor speed control according to viscosity changes. This Diagnostic Trouble Code (DTC) code is set when supplied over current or input too high temperature to MPU ECU, in order to protect MPU ECU. The MPU not perform EHPS control.
OBDII Code C2420 Hyundai - Motor Temperature Sensor High Input - AutoCodes.com
C2420 Hyundai Code - Motor Temperature Sensor High Input

What are the Possible Causes of the DTC C2420 Hyundai?

  • Contamination of Oil/Clog of Oil path
  • Faulty Motor Pump Unit (MPU)
  • Motor Pump Unit (MPU) harness is open or shorted
  • Motor Pump Unit (MPU) circuit poor electrical connection

How to Fix the DTC C2420 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C2420 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C2420 Hyundai code?

Need more information on how to fix the C2420 Hyundai code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C2420 Hyundai code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C2420 Hyundai Code

1. What are the common symptoms of OBDII code C2420 in a Hyundai related to the Motor Temperature Sensor High Input?

- Common symptoms include the engine temperature gauge reading higher than normal, the check engine light illuminating, and potential engine overheating.

2. What could cause the OBDII code C2420 (Motor Temperature Sensor High Input) to trigger in a Hyundai?

- The code may be triggered by a faulty motor temperature sensor, a wiring issue in the sensor circuit, or a problem with the engine control module (ECM).

3. How can I diagnose the OBDII code C2420 in my Hyundai vehicle?

- Diagnosis typically involves using an OBDII scanner to retrieve the fault code, inspecting the motor temperature sensor and its wiring for damage, and testing the sensor's resistance and voltage.

4. Is it safe to drive my Hyundai with the OBDII code C2420 (Motor Temperature Sensor High Input) present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to engine overheating and potential damage if not addressed promptly.

5. Can I repair the OBDII code C2420 in my Hyundai myself?

- Depending on your experience and tools, you may be able to replace the motor temperature sensor or repair the wiring yourself. However, if you are not familiar with automotive repair, it is advisable to seek professional assistance.

6. How much does it typically cost to repair the OBDII code C2420 in a Hyundai?

- The cost of repair can vary depending on the specific issue causing the code. Replacing the motor temperature sensor may cost between $100 to $200, while addressing wiring or ECM problems could be more expensive.

7. Are there any preventive maintenance tips to avoid the OBDII code C2420 in my Hyundai?

- Regularly checking and maintaining the cooling system, including the motor temperature sensor, can help prevent issues that may trigger this code. Keeping up with routine vehicle maintenance is also crucial.

8. Can a faulty motor temperature sensor cause other problems in my Hyundai besides triggering the OBDII code C2420?

- Yes, a faulty motor temperature sensor can lead to inaccurate temperature readings, engine overheating, poor fuel efficiency, and potential damage to engine components if not addressed promptly.

9. How urgent is it to address the OBDII code C2420 in my Hyundai?

- It is important to address this code promptly to prevent engine overheating and potential damage. Ignoring the issue can lead to more severe problems and costly repairs down the line.

10. Can resetting the check engine light make the OBDII code C2420 disappear in my Hyundai?

- Resetting the check engine light may temporarily turn it off, but the underlying issue causing the code will still be present. It is essential to diagnose and repair the problem to prevent further issues.

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