Engine-CodesToyota – P0136 2005 Toyota Highlander

P0136 2005 Toyota Highlander Code - Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

Quick Answer

The P0136 diagnostic trouble code (DTC) for a 2005 Toyota Highlander indicates an Oxygen Sensor Circuit Malfunction in Bank 1 Sensor 2. Common causes include Faulty oxygen sensor, Wiring or connector issues in the oxygen sensor circuit, Exhaust leaks near the oxygen sensor. 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
P0136 2005 Toyota Highlander indicates Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2.
Common causes
Common causes include Faulty oxygen sensor, Wiring or connector issues in the oxygen sensor circuit, Exhaust leaks near the oxygen sensor.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0136 2005 Toyota Highlander Description

The P0136 diagnostic trouble code (DTC) for a 2005 Toyota Highlander indicates an Oxygen Sensor Circuit Malfunction in Bank 1 Sensor 2. This means that there is a problem with the oxygen sensor located downstream (after the catalytic converter) on the side of the engine with cylinder 1. 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 P0136 2005 Toyota Highlander - Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2
P0136 2005 Toyota Highlander Code - Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

Common Causes of P0136 2005 Toyota Highlander

  1. Faulty oxygen sensor
  2. Wiring or connector issues in the oxygen sensor circuit
  3. Exhaust leaks near the oxygen sensor
  4. Contaminated or damaged catalytic converter
  5. Issues with the ECM or engine control system

Symptoms of P0136 2005 Toyota Highlander

  1. Decreased fuel efficiency
  2. Rough idling or engine misfires
  3. Engine stalling
  4. Increased emissions
  5. Check Engine Light illuminated on the dashboard

How to Fix P0136 2005 Toyota Highlander

  1. Diagnose the issue by using a scan tool to confirm the P0136 code and inspecting the oxygen sensor and related components.
  2. Replace the Bank 1 Sensor 2 oxygen sensor with a new, OEM-quality sensor.
  3. Check and repair any damaged wiring or connectors in the oxygen sensor circuit.
  4. Inspect the catalytic converter for damage or contamination and replace if necessary.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0136 2005 Toyota Highlander

The cost of repairing a P0136 code on a 2005 Toyota Highlander can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of a new oxygen sensor can range from $50 to $200, depending on the brand and quality. Labor costs for this repair can range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. Overall, you can expect to pay anywhere from $150 to $500 for this repair, including parts and labor. It's recommended to get quotes from multiple auto repair shops to find the best price for your specific situation.

Tech Notes for P0136 2005 Toyota Highlander

Replacing the Rear Heated Oxygen Sensor Bank 1 usually takes care of the problem.

When is the Code Detected?

It takes more time for the sensor 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 P0136 2005 Toyota Highlander Code

1. What does OBDII code P0136 mean for a 2005 Toyota Highlander?

The code P0136 indicates an Oxygen Sensor Circuit Malfunction for Bank 1 Sensor 2 in a 2005 Toyota Highlander.

2. What are the common symptoms of a P0136 code in a 2005 Toyota Highlander?

Common symptoms of a P0136 code include poor fuel economy, rough idling, and a noticeable decrease in engine performance.

3. What are the possible causes of a P0136 code in a 2005 Toyota Highlander?

Possible causes of a P0136 code include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the Engine Control Module (ECM).

4. How can I diagnose a P0136 code in my 2005 Toyota Highlander?

Diagnosing a P0136 code involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor and its wiring, checking for exhaust leaks, and testing the ECM.

5. Can I drive my 2005 Toyota Highlander with a P0136 code?

It is not recommended to drive your vehicle with a P0136 code as it can lead to further damage to the engine and emissions system.

6. How do I repair a P0136 code in my 2005 Toyota Highlander?

Repairing a P0136 code may involve replacing the oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or reprogramming the ECM.

7. Are there any DIY tips for fixing a P0136 code in a 2005 Toyota Highlander?

DIY tips for fixing a P0136 code include checking and cleaning the oxygen sensor connections, inspecting the wiring for damage, and ensuring proper installation of a new sensor.

8. How much does it typically cost to repair a P0136 code in a 2005 Toyota Highlander?

The cost of repairing a P0136 code in a 2005 Toyota Highlander can vary depending on the exact cause, but it may range from $100 to $500 or more, including parts and labor.

9. How long does it take to repair a P0136 code in a 2005 Toyota Highlander?

The repair time for a P0136 code in a 2005 Toyota Highlander can vary depending on the specific issue, but it may take a few hours to a full day to complete the repair.

10. Can a P0136 code in a 2005 Toyota Highlander affect emissions testing?

Yes, a P0136 code can affect emissions testing results for a 2005 Toyota Highlander, potentially causing the vehicle to fail the test.

Discuss the causes and fixes for P0136 2005 Toyota Highlander OBDII Code

  • I have 05 highlander I replace the engine with a 03 Camry engine , I got po136 code which is the sensor I replace the sensor and still have check engine light .When car is cold starts up fine while idle but sounds like it going to shut off and rpm goes up on its own to about 2 Rpm .I have change the spark plugs , ignition coils , new sensor my next step is changing the fuel injectors can anyone advice what could be the problem .