P0037 2013 Toyota RAV4 Code - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2
Quick Answer
The sensing portion of the heated oxygen sensor has a zirconia element which is used to detect the oxygen concentration in the exhaust gas. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection. 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 2013 Toyota RAV4 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, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection.
- 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 2013 Toyota RAV4 Description
The ECM monitors the current applied to the heated oxygen sensor heater to check the heater for malfunctions.
If the heater current is outside the normal range, the signal transmitted by the heated oxygen sensor becomes inaccurate. When the current in the heated oxygen sensor heater is outside the normal operating range, the ECM interprets this as a malfunction in the sensor heater and stores a Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC P0037 2013 Toyota RAV4?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted
- Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0037 2013 Toyota RAV4?
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 P0037 2013 Toyota RAV4 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 2013 Toyota RAV4 Code
1. What does the OBDII code P0037 mean on a 2013 Toyota RAV4?
P0037 indicates an issue with the Oxygen Sensor Heater Control Circuit Low for Bank 1 Sensor 2, meaning the vehicle detects a low voltage or malfunction in the heater circuit of the downstream oxygen sensor.
2. What are the symptoms of code P0037 in a 2013 Toyota RAV4?
Common symptoms include an illuminated Check Engine Light, decreased fuel efficiency, and possibly higher emissions, though you may not notice significant drivability issues.
3. What causes the P0037 code to appear on a 2013 Toyota RAV4?
The most common causes include a faulty oxygen sensor (Bank 1 Sensor 2), a damaged heater circuit, wiring issues (such as a short or open circuit), or a blown fuse.
4. What is Bank 1 Sensor 2 on a 2013 Toyota RAV4?
Bank 1 refers to the side of the engine where cylinder 1 is located, and Sensor 2 is the downstream oxygen sensor located after the catalytic converter.
5. Can I drive my 2013 Toyota RAV4 with a P0037 code?
While your vehicle may still be drivable, it’s not recommended as it could lead to increased emissions, reduced fuel efficiency, and potential damage to the catalytic converter over time.
6. How can I fix the P0037 code on my 2013 Toyota RAV4?
Common fixes include replacing the faulty oxygen sensor, repairing or replacing damaged wiring, checking for a blown fuse in the sensor circuit, or addressing any related ECM issues.
7. How do I diagnose the P0037 code on my 2013 Toyota RAV4?
Diagnosis involves checking the oxygen sensor’s heater circuit with a multimeter, inspecting the wiring and connectors for damage, and using a scan tool to monitor sensor operation.
8. How much does it cost to fix the P0037 code on a 2013 Toyota RAV4?
Repair costs vary but typically range from $100 to $300, depending on whether the issue is a faulty oxygen sensor or wiring repair.
9. Can a P0037 code be caused by a bad catalytic converter on a 2013 Toyota RAV4?
A bad catalytic converter is unlikely to directly cause P0037, as this code specifically relates to the oxygen sensor’s heater circuit, not the converter's efficiency.
10. How do I reset the P0037 code on a 2013 Toyota RAV4 after repairs?
After fixing the issue, you can reset the code by using an OBDII scan tool to clear the fault codes or by disconnecting the battery for a few minutes, though the latter may reset other system settings.
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