P0037 2007 Toyota Prius Code - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2
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, EFI relay (integration relay), 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 2007 Toyota Prius indicates Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, EFI relay (integration relay), 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 2007 Toyota Prius 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 2007 Toyota Prius?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- EFI relay (integration relay)
- 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 2007 Toyota Prius?
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 2007 Toyota Prius 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 2007 Toyota Prius Code
1. What are the common symptoms of OBDII code P0037 on a 2007 Toyota Prius?
- Common symptoms include poor fuel economy, rough idling, stalling, and the illumination of the Check Engine light.
2. What does the OBDII code P0037 "Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2" mean for a 2007 Toyota Prius?
- This code indicates that there is a problem with the heating element circuit of the downstream oxygen sensor on bank 1 in the exhaust system.
3. What are the possible causes of OBDII code P0037 on a 2007 Toyota Prius?
- Possible causes include a faulty oxygen sensor heater, damaged wiring or connectors, a blown fuse, or an issue with the engine control module (ECM).
4. How can I diagnose and repair OBDII code P0037 on my 2007 Toyota Prius?
- To diagnose this code, you can check the oxygen sensor heater circuit for continuity and inspect the wiring and connectors. Repair may involve replacing the oxygen sensor, repairing wiring, or addressing ECM issues.
5. Is it safe to continue driving my 2007 Toyota Prius with OBDII code P0037 present?
- It is not recommended to drive with this code as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.
6. Can I reset the Check Engine light after repairing OBDII code P0037 on my 2007 Toyota Prius?
- Yes, once the issue causing the code has been resolved, you can reset the Check Engine light using an OBDII scanner or by disconnecting the car's battery for a few minutes.
7. How much does it typically cost to repair OBDII code P0037 on a 2007 Toyota Prius?
- The cost of repairs can vary depending on the specific issue causing the code, but it may range from $100 to $300 for parts and labor.
8. Will OBDII code P0037 cause my 2007 Toyota Prius to fail an emissions test?
- Yes, this code can cause your vehicle to fail an emissions test due to increased emissions and potential malfunctions in the exhaust system.
9. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P0037 on a 2007 Toyota Prius?
- Depending on the root cause of the issue, some DIY enthusiasts may be able to repair this code by replacing the oxygen sensor or checking and repairing wiring connections.
10. How often does OBDII code P0037 occur in a 2007 Toyota Prius?
- This code may occur infrequently in a 2007 Toyota Prius, but it is essential to address it promptly to prevent further issues with the vehicle's performance and emissions.
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