P0159 2010 Toyota Camry Code - Oxygen Sensor Circuit Slow Response 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
- P0159 2010 Toyota Camry indicates Oxygen Sensor Circuit Slow Response 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 P0159 2010 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 P0159 2010 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 may be faulty
- Exhaust gas leaks
How to Fix the DTC P0159 2010 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0159 2010 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 P0159 2010 Toyota Camry code?
Need more information on how to fix the P0159 2010 Toyota Camry code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0159 2010 Toyota Camry code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0159 2010 Toyota Camry Code
1. What are the common symptoms of OBDII code P0159 in a 2010 Toyota Camry?
- Common symptoms include poor fuel economy, rough idling, stalling, and the illumination of the check engine light.
2. What does the OBDII code P0159 for a 2010 Toyota Camry indicate?
- This code indicates a slow response from the oxygen sensor located in Bank 2 Sensor 2 of the vehicle.
3. What are the possible causes of the Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2 code in a 2010 Toyota Camry?
- Potential causes include a faulty oxygen sensor, wiring issues, exhaust leaks, or a problem with the engine's air-fuel mixture.
4. How can I diagnose the cause of OBDII code P0159 in my 2010 Toyota Camry?
- Diagnose by checking the oxygen sensor's wiring, inspecting for exhaust leaks, testing the sensor's response time, and scanning for other related codes.
5. Can I continue driving my 2010 Toyota Camry with the P0159 code?
- It is not recommended to continue driving with this code as it can lead to reduced fuel efficiency and potential damage to the vehicle's catalytic converter.
6. How can I repair the Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2 code in my 2010 Toyota Camry?
- Repair options include replacing the oxygen sensor, repairing any damaged wiring, fixing exhaust leaks, or addressing issues with the air-fuel mixture.
7. Will resetting the check engine light resolve the P0159 code in a 2010 Toyota Camry?
- Resetting the check engine light may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear.
8. Is it possible to clean the oxygen sensor to resolve the P0159 code in a 2010 Toyota Camry?
- Cleaning the oxygen sensor is not a recommended solution for this code. It is best to replace the sensor if it is faulty.
9. How much does it cost to repair the Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2 code in a 2010 Toyota Camry?
- The cost of repair can vary depending on the exact cause of the issue, but it typically ranges from $200 to $500, including parts and labor.
10. Can a DIY enthusiast fix the P0159 code in a 2010 Toyota Camry?
- While some may attempt DIY repairs, diagnosing and fixing the root cause of the code may require specialized tools and expertise, so it is advisable to consult a professional mechanic.
Discuss the causes and fixes for P0159 2010 Toyota Camry OBDII Code
Code P0159 2010 Toyota Camry comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
