P0158 Toyota Code - HO2S22 Circuit High Voltage
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 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor Bank 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
- P0158 Toyota indicates HO2S22 Circuit High Voltage.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor Bank 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 P0158 Toyota Description
What are the Possible Causes of the DTC P0158 Toyota?
- Faulty Rear Heated Oxygen Sensor Bank 2
- 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 Toyota?
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:
2005 - 2007 Toyota Avalon
2007 - 2008 Toyota Camry
2005-2007 Toyota Avalon, 2007-2008 Toyota Camry Factory Service Bulletin OBDII Code P0158
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0158 Toyota 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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Information for Specific Toyota Models
- P0158 2006 Toyota Camry — Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 2007 Toyota Camry — Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 2008 Toyota Camry — Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 2009 Toyota Camry — Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 2010 Toyota Camry — Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 2011 Toyota Camry — Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 Toyota RAV4 — Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2
Frequently Asked Questions about P0158 Toyota Code
1. What are common symptoms of OBDII code P0158 for a Toyota, indicating HO2S22 Circuit High Voltage?
- Common symptoms include poor fuel economy, rough idling, loss of power, and the illumination of the Check Engine Light.
2. What are the potential causes of OBDII code P0158 in a Toyota related to the HO2S22 Circuit High Voltage?
- The code may be triggered by a faulty oxygen sensor (HO2S22), issues with the wiring or connectors, or problems with the engine's computer system.
3. How can I diagnose the OBDII code P0158 in my Toyota for the HO2S22 Circuit High Voltage?
- Diagnosing involves using an OBDII scanner to read the code, checking the oxygen sensor and related wiring for damage, and testing the sensor's voltage output.
4. What are some repair tips for fixing OBDII code P0158 on a Toyota due to HO2S22 Circuit High Voltage?
- Repair tips may include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, and clearing the error code with an OBDII scanner.
5. Can I continue driving my Toyota with the OBDII code P0158 for HO2S22 Circuit High Voltage?
- It's not recommended to drive for an extended period with this code unresolved, as it can lead to poor engine performance and potential damage if left unattended.
6. Will resetting the Check Engine Light resolve the OBDII code P0158 issue in my Toyota for HO2S22 Circuit High Voltage?
- Resetting the light may temporarily turn it off, but the underlying problem causing the code will persist until properly diagnosed and repaired.
7. How much does it typically cost to fix OBDII code P0158 on a Toyota related to HO2S22 Circuit High Voltage?
- The cost can vary depending on the exact cause, but it may involve expenses for parts like the oxygen sensor and labor for diagnostics and repairs.
8. Are there any DIY steps I can take to troubleshoot OBDII code P0158 for HO2S22 Circuit High Voltage in my Toyota?
- DIY steps may include visually inspecting the oxygen sensor and wiring, checking for loose connections, and cleaning any debris around the sensor.
9. How can I prevent OBDII code P0158 related to HO2S22 Circuit High Voltage from recurring in my Toyota?
- Regular maintenance, such as checking and replacing oxygen sensors as recommended, ensuring proper wiring connections, and addressing engine issues promptly can help prevent code recurrence.
10. Can a mechanic help me with diagnosing and repairing OBDII code P0158 on my Toyota due to the HO2S22 Circuit High Voltage?
- Yes, a qualified mechanic with experience in automotive diagnostics can assist in properly diagnosing and repairing the issue to resolve the OBDII code P0158.
Discuss the causes and fixes for P0158 Toyota OBDII Code
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What model and year is your Toyota? You have to replace the "Rear Oxygen Sensor" to fix the problem
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