P0120 Hyundai Code - Throttle/Pedal Position Sensor/Switch 'A' Circuit
Quick Answer
The throttle position sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor poor electrical connection. 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
- P0120 Hyundai indicates Throttle/Pedal Position Sensor/Switch 'A' Circuit.
- Common causes
- Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor poor electrical connection.
- 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.
Code P0120 Hyundai Description
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.
What are the Possible Causes of the DTC P0120 Hyundai?
- Faulty Throttle Position Sensor
- Throttle Position Sensor circuit is open or shorted
- Throttle Position Sensor poor electrical connection
How to Fix the DTC P0120 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 P0120 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 P0120 Hyundai code?
Need more information on how to fix the P0120 Hyundai code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0120 Hyundai code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0120 Hyundai Code
1. What are common symptoms of OBDII code P0120 in a Hyundai related to the Throttle/Pedal Position Sensor/Switch 'A' Circuit?
The common symptoms include issues with acceleration, poor engine performance, stalling, and in some cases, the vehicle may go into "limp mode."
2. What are some possible causes of OBDII code P0120 in a Hyundai?
Possible causes include a faulty throttle position sensor, problems with the wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).
3. Can driving with an unresolved P0120 code cause further damage to the vehicle?
Continuing to drive with an unresolved P0120 code can potentially lead to decreased fuel efficiency, engine misfires, and even more severe issues if left unaddressed for an extended period.
4. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'A' Circuit issue causing OBDII code P0120 in my Hyundai?
Diagnosis typically involves using an OBDII scanner to read the code, testing the throttle position sensor's voltage and resistance, and inspecting the sensor's wiring and connectors for any visible damage.
5. Is it possible to repair the Throttle/Pedal Position Sensor/Switch 'A' Circuit issue myself?
If you have experience with automotive repairs and access to the necessary tools, you may be able to replace the throttle position sensor or repair wiring issues yourself. However, if you are unsure, it's recommended to consult a professional mechanic.
6. Are there any maintenance tips to prevent OBDII code P0120 in a Hyundai?
Regularly checking and cleaning the throttle position sensor, ensuring proper wiring connections, and addressing any engine performance issues promptly can help prevent the occurrence of the P0120 trouble code.
7. How long does it typically take to repair the Throttle/Pedal Position Sensor/Switch 'A' Circuit issue triggering OBDII code P0120?
The repair time can vary depending on the exact cause of the issue and the mechanic's expertise. In general, replacing the throttle position sensor or repairing wiring may take a few hours to complete.
8. Can resetting the OBDII code P0120 in a Hyundai make the issue go away permanently?
Resetting the code may temporarily turn off the check engine light, but if the underlying problem causing the P0120 persists, the code is likely to return. It's crucial to diagnose and address the root cause of the issue.
9. What is the typical cost to repair OBDII code P0120 related to the Throttle/Pedal Position Sensor/Switch 'A' Circuit in a Hyundai?
The cost of the repair can vary based on the specific parts needed, labor rates, and whether you choose to go to a dealership or an independent mechanic. On average, the repair cost can range from $100 to $300.
10. Are there any recalls or technical service bulletins related to OBDII code P0120 in Hyundai vehicles?
It's advisable to check with your nearest Hyundai dealership or visit the manufacturer's website to inquire about any recalls or technical service bulletins related to the Throttle/Pedal Position Sensor/Switch 'A' Circuit issue triggering OBDII code P0120 in your specific vehicle model.
Discuss the causes and fixes for P0120 Hyundai OBDII Code
Code P0120 Hyundai comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
