P0037 Hyundai Code - HO2S 12 Heater Circuit Low
Quick Answer
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0037 Hyundai indicates HO2S 12 Heater Circuit Low.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0037 Hyundai Description
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
What are the Possible Causes of the DTC P0037 Hyundai?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0037 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0037 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.
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Frequently Asked Questions about P0037 Hyundai Code
1. What are the common symptoms of OBDII code P0037 in a Hyundai related to HO2S 12 Heater Circuit Low?
The common symptoms include poor fuel economy, rough idling, and the illumination of the check engine light.
2. What are the possible causes of OBDII code P0037 in a Hyundai indicating HO2S 12 Heater Circuit Low?
The potential causes can be a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the engine control module (ECM).
3. How can I diagnose OBDII code P0037 in a Hyundai associated with HO2S 12 Heater Circuit Low?
You can diagnose this code by using an OBDII scanner to read the code, inspecting the oxygen sensor and its wiring, checking the fuse, and testing the ECM.
4. What are the repair options for OBDII code P0037 in a Hyundai due to HO2S 12 Heater Circuit Low?
The repairs may involve replacing the oxygen sensor, repairing or replacing damaged wiring or connectors, replacing a blown fuse, or reprogramming the ECM.
5. Can I drive my Hyundai with OBDII code P0037 indicating HO2S 12 Heater Circuit Low?
It is generally not recommended to drive your Hyundai with this code present, as it can lead to poor performance and potential damage to the engine over time.
6. How much does it typically cost to repair OBDII code P0037 in a Hyundai related to HO2S 12 Heater Circuit Low?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more, including parts and labor.
7. Are there any DIY tips for fixing OBDII code P0037 in a Hyundai due to HO2S 12 Heater Circuit Low?
While some basic troubleshooting like checking fuses and connectors can be done DIY, it's recommended to consult a professional for proper diagnosis and repair of this code.
8. How urgent is it to address OBDII code P0037 in a Hyundai related to HO2S 12 Heater Circuit Low?
It is advisable to address this code promptly to prevent further damage to the vehicle and ensure optimal performance and fuel efficiency.
9. Can a faulty oxygen sensor trigger OBDII code P0037 in a Hyundai indicating HO2S 12 Heater Circuit Low?
Yes, a faulty oxygen sensor is one of the common culprits behind this code, as it can lead to incorrect readings and trigger the HO2S 12 Heater Circuit Low error.
10. Is it necessary to reset the ECU after repairing OBDII code P0037 in a Hyundai associated with HO2S 12 Heater Circuit Low?
It is recommended to reset the ECU after repairing this code to clear the error code and allow the system to monitor the oxygen sensor's performance accurately.
Discuss the causes and fixes for P0037 Hyundai OBDII Code
-
hello, we have a 2009 hundai sonata 3.3l six cyl
we need to know where is bank 1 sensor 2.....we got code P0037
now standing in front of the hundai looking at the driver we look straight down and spot a sensor right behind the radator on top. another is lower on exaust pipes going towards the rear of the car.
what sensor are these and where is bank 1 sensor 2. thanks....mike -
Bank 1 is the drivers side sensor.
Here are a couple of images to help you locate the sensor. First one is bottom view and the second one is the top view.
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