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P0159 2007 Toyota Camry Code - Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2

Quick Answer

The P0159 diagnostic trouble code (DTC) for a 2007 Toyota Camry indicates an issue with the oxygen sensor circuit for Bank 2 Sensor 2. Common causes include Faulty oxygen sensor, Contaminated sensor (e.g., buildup of oil or coolant), Wiring or connector issues. 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 2007 Toyota Camry indicates Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2.
Common causes
Common causes include Faulty oxygen sensor, Contaminated sensor (e.g., buildup of oil or coolant), Wiring or connector issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P0159 2007 Toyota Camry Description

The P0159 diagnostic trouble code (DTC) for a 2007 Toyota Camry indicates an issue with the oxygen sensor circuit for Bank 2 Sensor 2. This sensor is located after the catalytic converter on the side of the engine that contains cylinder number 2. The oxygen sensor plays a crucial role in monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.

OBDII Code P0159 2007 Toyota Camry - Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2
P0159 2007 Toyota Camry Code - Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2

Common Causes of P0159 2007 Toyota Camry

  1. Faulty oxygen sensor
  2. Contaminated sensor (e.g., buildup of oil or coolant)
  3. Wiring or connector issues
  4. Exhaust leaks near the sensor
  5. ECM malfunction

Symptoms of P0159 2007 Toyota Camry

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Check Engine Light illuminated
  5. Failed emissions test

How to Fix P0159 2007 Toyota Camry

  1. Begin by diagnosing the specific cause of the slow response in Bank 2 Sensor 2. This may involve using a scan tool to monitor the sensor's readings and inspecting the sensor, wiring, and connectors for any visible damage or contamination.
  2. If the oxygen sensor is found to be faulty, replace it with a new, OEM-quality sensor designed for your specific vehicle make and model.
  3. Check for any exhaust leaks near the sensor and repair them if necessary to prevent further contamination or damage to the new sensor.
  4. Clear the DTC from the ECM's memory using a scan tool and test drive the vehicle to ensure that the issue has been resolved.
  5. If the repair process does not resolve the P0159 code, further diagnostics may be required to identify any underlying issues with the wiring, connectors, or ECM.

Cost to Fix P0159 2007 Toyota Camry

The cost of repairing a P0159 code on a 2007 Toyota Camry can vary depending on the specific cause of the issue and the labor rates in your area. Generally, the cost of a new oxygen sensor for this vehicle ranges from $50 to $200, depending on the brand and quality. Labor costs for sensor replacement typically range from $100 to $200, with total repair costs likely falling between $150 and $400. Keep in mind that additional diagnostic time or repairs may increase the overall cost, so it's advisable to consult with a trusted mechanic for a more accurate estimate based on your specific circumstances. Labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150.

What does this mean?

Tech Notes for P0159 2007 Toyota Camry

Replacing the O2 Sensor 2 usually takes care of the problem

When is the Code Detected?

The P0159 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor takes more time to respond between rich and lean than the specified time.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0159 2007 Toyota Camry Code

1. What are the common symptoms of OBDII code P0159 on a 2007 Toyota Camry?

- Common symptoms include poor fuel economy, rough idling, and a noticeable decrease in engine performance.

2. What does the Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2 code mean for a 2007 Toyota Camry?

- This code indicates that the oxygen sensor located after the catalytic converter on bank 2 is not responding quickly enough to changes in the air-fuel mixture.

3. What are the possible causes of the P0159 code on a 2007 Toyota Camry?

- Possible causes include a faulty oxygen sensor, wiring issues, exhaust leaks, or a malfunctioning catalytic converter.

4. How can I diagnose the Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2 issue on my 2007 Toyota Camry?

- You can use an OBDII scanner to read the code and monitor the oxygen sensor's response time while the engine is running. Checking the sensor's wiring and connections is also recommended.

5. Can I continue driving my 2007 Toyota Camry with the P0159 code present?

- While it may be possible to drive the vehicle with this code, it is not recommended as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.

6. How can I repair the Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2 issue on my 2007 Toyota Camry?

- Repairing this issue typically involves replacing the oxygen sensor on bank 2 sensor 2. Ensuring proper wiring connections and addressing any exhaust leaks may also be necessary.

7. Are there any DIY tips for fixing the P0159 code on a 2007 Toyota Camry?

- If you have experience working on vehicles, you may be able to replace the oxygen sensor yourself. However, it is recommended to consult a professional for accurate diagnosis and repair.

8. How much does it cost to fix the Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2 problem on a 2007 Toyota Camry?

- The cost of repairing this issue can vary depending on the cause of the problem and labor rates in your area. Expect to pay for the cost of a new oxygen sensor and potential installation fees.

9. Can resetting the OBDII system clear the P0159 code on a 2007 Toyota Camry?

- Resetting the OBDII system may temporarily clear the code, but it is likely to return if the underlying issue is not addressed. It is best to diagnose and repair the problem to prevent further issues.

10. How often should I check the oxygen sensors on my 2007 Toyota Camry to prevent the P0159 code from occurring?

- It is recommended to periodically inspect and test the oxygen sensors during routine maintenance to catch any potential issues early and prevent the occurrence of codes like P0159.

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