P0137 2004 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 2004 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 2004 Toyota Highlander Description
What are the Possible Causes of the DTC P0137 2004 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 2004 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 2004 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 2004 Toyota Highlander Code
1. What does OBDII code P0137 for a 2004 Toyota Highlander mean?
- This code indicates a low voltage condition in the oxygen sensor circuit for Bank 1 Sensor 2.
2. What are the common symptoms of OBDII code P0137 in a Toyota Highlander?
- Common symptoms include poor fuel economy, rough idling, and an illuminated check engine light.
3. What are the possible causes of OBDII code P0137 in a 2004 Toyota Highlander?
- Causes can include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine control module.
4. How can I diagnose the cause of OBDII code P0137 in my Toyota Highlander?
- Diagnosing may involve visually inspecting wiring and connectors, testing the oxygen sensor, checking for exhaust leaks, and using a scan tool to monitor sensor data.
5. Can I still drive my Toyota Highlander with an OBDII code P0137?
- It is generally safe to drive with this code, but it is recommended to address the issue promptly to prevent further damage and ensure optimal vehicle performance.
6. How can I repair OBDII code P0137 in my 2004 Toyota Highlander?
- Repair options may include replacing the oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or reprogramming the engine control module.
7. Should I reset the check engine light after fixing OBDII code P0137 in my Toyota Highlander?
- Yes, it is recommended to reset the check engine light using a scan tool after repairing the issue to clear the error code and ensure proper monitoring of the system.
8. How much does it cost to fix OBDII code P0137 in a 2004 Toyota Highlander?
- The cost can vary depending on the specific cause of the issue, but it may involve parts and labor expenses for sensor replacement, wiring repairs, or other necessary repairs.
9. What happens if OBDII code P0137 in a Toyota Highlander is not addressed?
- Ignoring this code can lead to decreased fuel efficiency, engine performance issues, and potential damage to the catalytic converter over time.
10. Can I prevent OBDII code P0137 from occurring in my Toyota Highlander?
- Regular maintenance, timely replacement of oxygen sensors, and addressing any issues promptly can help prevent the recurrence of this code.
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