P0158 2007 Toyota Camry Code - Oxygen Sensor Circuit High Voltage Bank 2 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 2, EFI Relay, Rear Heated Oxygen Sensor Bank 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
- P0158 2007 Toyota Camry indicates Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, EFI Relay, Rear Heated Oxygen Sensor Bank 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 P0158 2007 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 P0158 2007 Toyota Camry?
- Faulty Rear Heated Oxygen Sensor Bank 2
- EFI Relay
- Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks
- Exhaust gas leaks
How to Fix the DTC P0158 2007 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
There is a factory service bulletin for the following Toyota models:
2007 Toyota Camry
2007 Toyota Camry Service Bulletin OBDII Code P0158
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0158 2007 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.
Need more information about the P0158 2007 Toyota Camry code?
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Frequently Asked Questions about P0158 2007 Toyota Camry Code
1. What are the common symptoms of OBDII code P0158 in a 2007 Toyota Camry?
- Common symptoms include a check engine light, poor fuel economy, rough idle, and potential issues with emissions.
2. What does the OBDII code P0158 for a 2007 Toyota Camry indicate?
- The code P0158 indicates a high voltage condition in the oxygen sensor circuit of Bank 2 Sensor 2 in the vehicle.
3. What are the possible causes of OBDII code P0158 in a 2007 Toyota Camry?
- Possible causes include a faulty oxygen sensor, wiring issues in the sensor circuit, exhaust leaks, or issues with the engine's air-fuel mixture.
4. How can I diagnose the OBDII code P0158 in my 2007 Toyota Camry?
- Diagnosing the code involves using an OBDII scanner to retrieve the code, checking the oxygen sensor and its wiring for any visible damage, and inspecting the exhaust system for leaks.
5. Can I drive my 2007 Toyota Camry with OBDII code P0158?
- It is not recommended to drive the vehicle with the code P0158, as it can lead to poor performance and potential damage to the engine or catalytic converter.
6. How can I repair OBDII code P0158 in my 2007 Toyota Camry?
- Repairing the code may involve replacing the oxygen sensor in Bank 2 Sensor 2, repairing any damaged wiring, fixing exhaust leaks, or addressing issues with the engine's air-fuel mixture.
7. Are there any DIY tips for fixing OBDII code P0158 in a 2007 Toyota Camry?
- DIY tips include checking for loose or damaged wiring, ensuring the oxygen sensor is securely connected, and using a multimeter to test the sensor's voltage.
8. How much does it cost to repair OBDII code P0158 in a 2007 Toyota Camry?
- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
9. How long does it take to repair OBDII code P0158 in a 2007 Toyota Camry?
- The repair time can vary depending on the extent of the issue, but it typically takes around 1-2 hours to diagnose and fix the problem.
10. Can OBDII code P0158 in a 2007 Toyota Camry cause other issues if left unresolved?
- If left unresolved, the code P0158 can lead to decreased fuel efficiency, engine performance issues, and potential damage to the catalytic converter over time.
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