P0137 2002 Toyota Highlander Code - Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 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
- P0137 2002 Toyota Highlander indicates Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 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 P0137 2002 Toyota Highlander Description
What are the Possible Causes of the DTC P0137 2002 Toyota Highlander?
- Faulty Rear Heated Oxygen Sensor Bank 1
- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
How to Fix the DTC P0137 2002 Toyota Highlander?
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 P0137 2002 Toyota Highlander 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 P0137 2002 Toyota Highlander Code
1. What are the common symptoms of OBDII code P0137 in a 2002 Toyota Highlander?
- Common symptoms include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light.
2. What does the OBDII code P0137 for a 2002 Toyota Highlander indicate?
- This code indicates a low voltage condition in the oxygen sensor circuit for Bank 1 Sensor 2, which is located after the catalytic converter.
3. What are the possible causes of the P0137 code on a 2002 Toyota Highlander?
- Possible causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, a malfunctioning catalytic converter, or an issue with the engine's computer.
4. How can I diagnose the P0137 code in my 2002 Toyota Highlander?
- Diagnosis typically involves using a scan tool to read the code, inspecting the oxygen sensor and its wiring for damage, checking for exhaust leaks, and testing the sensor's voltage output.
5. Can I drive my 2002 Toyota Highlander with the P0137 code present?
- It is generally safe to drive the vehicle with this code, but it's important to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.
6. How can I repair the P0137 code on my 2002 Toyota Highlander?
- Repair options may include replacing the oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, replacing the catalytic converter if necessary, and clearing the error code.
7. Are there any tips for preventing the recurrence of the P0137 code in a 2002 Toyota Highlander?
- Regular maintenance, such as checking and replacing oxygen sensors as recommended by the manufacturer, inspecting the exhaust system for leaks, and using high-quality fuel, can help prevent the code from reoccurring.
8. How much does it typically cost to repair the P0137 code on a 2002 Toyota Highlander?
- The cost of repairing this code can vary depending on the specific issue, but it may range from $100 to $500 or more, including parts and labor.
9. Can a DIY enthusiast fix the P0137 code on a 2002 Toyota Highlander?
- Depending on their skill level and access to tools, a DIY enthusiast may be able to address some causes of the P0137 code, such as replacing the oxygen sensor or repairing wiring, but more complex issues may require professional intervention.
10. How important is it to address the P0137 code on a 2002 Toyota Highlander promptly?
- It is important to address this code promptly to ensure optimal engine performance, fuel efficiency, and emissions compliance, as well as to prevent potential damage to the catalytic converter.
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