P0137 2008 Toyota Camry Code - Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
In order to obtain a high purification rate of the carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxide (NOx) components in the exhaust gas, a TWC is used. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, EFI Relay, Rear Heated Oxygen Sensor Bank 1 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
- P0137 2008 Toyota Camry indicates Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, EFI Relay, Rear Heated Oxygen Sensor Bank 1 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 P0137 2008 Toyota Camry Description
The HO2 sensor is located behind the TWC, and detects the oxygen concentration in the exhaust gas. Since the sensor is integrated with the heater that heats the sensing portion, it is possible to detect the oxygen concentration even when the intake air volume is low (the exhaust gas temperature is low). When the air-fuel ratio becomes lean, the oxygen concentration in the exhaust gas is rich. The HO2 sensor informs the ECM that the post-TWC air-fuel ratio is lean (low voltage, i.e. less than 0.45 V). Conversely, when the air-fuel ratio is richer than the stoichiometric air-fuel level, the oxygen concentration in the exhaust gas becomes lean. The HO2 sensor informs the ECM that the post-TWC air-fuel ratio is rich (high voltage, i.e. more than 0.45 V). The HO2 sensor has the property of changing its output voltage drastically when the air-fuel ratio is close to the stoichiometric level.
The ECM uses the supplementary information from the HO2 sensor to determine whether the air-fuel ratio after the TWC is rich or lean, and adjusts the fuel injection time accordingly. Thus, if the HO2 sensor is working improperly due to internal malfunctions, the ECM is unable to compensate for deviations in the primary air-fuel ratio control.
What are the Possible Causes of the DTC P0137 2008 Toyota Camry?
- Faulty Rear Heated Oxygen Sensor Bank 1
- EFI Relay
- 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 2008 Toyota Camry?
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 2008 Toyota Camry 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 2008 Toyota Camry Code
1. What are the common symptoms of OBDII code P0137 on a 2008 Toyota Camry?
- Common symptoms include poor fuel efficiency, rough idling, hesitation during acceleration, and an illuminated check engine light.
2. What does the OBDII code P0137 for a 2008 Toyota Camry indicate?
- The code P0137 indicates that the oxygen sensor circuit for Bank 1 Sensor 2 is experiencing low voltage.
3. What are the possible causes of OBDII code P0137 on a 2008 Toyota Camry?
- Possible causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or an issue with the engine's air-fuel mixture.
4. How can I diagnose the cause of OBDII code P0137 on my 2008 Toyota Camry?
- To diagnose the issue, you can use an OBDII scanner to read the code, visually inspect the oxygen sensor and its wiring, check for exhaust leaks, and perform a voltage test on the sensor.
5. Can I drive my 2008 Toyota Camry with the OBDII code P0137?
- It is not recommended to drive the vehicle with code P0137, as it can lead to poor engine performance and potentially cause damage to the catalytic converter.
6. How can I repair OBDII code P0137 on a 2008 Toyota Camry?
- Repairing the issue may involve replacing the oxygen sensor, repairing damaged wiring or connectors, fixing any exhaust leaks, or addressing any underlying engine performance problems.
7. How much does it typically cost to fix OBDII code P0137 on a 2008 Toyota Camry?
- The cost of fixing code P0137 can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor.
8. Can I reset the check engine light after fixing OBDII code P0137 on my 2008 Toyota Camry?
- Yes, you can use an OBDII scanner to reset the check engine light after fixing the issue causing code P0137.
9. How often should the oxygen sensors be replaced in a 2008 Toyota Camry?
- Oxygen sensors typically last around 60,000 to 90,000 miles, but it's recommended to follow the manufacturer's maintenance schedule for specific guidance.
10. Is it safe to ignore OBDII code P0137 on a 2008 Toyota Camry?
- Ignoring code P0137 can lead to decreased fuel efficiency, engine performance issues, and potential damage to the catalytic converter, so it is not advisable to ignore this issue.
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