AutoCodes – Toyota – P0136 1997 Toyota Camry

P0136 1997 Toyota Camry Code - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

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 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 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: P0136 1997 Toyota Camry indicates Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2.
Common causes: Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 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.

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Code Popularity 10,650

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0136 1997 Toyota Camry Description

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio. The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module (ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V.

OBDII Code P0136 1997 Toyota Camry - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 - AutoCodes.com — P0136 1997 Toyota Camry Code - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0136 1997 Toyota Camry?

Faulty Rear Heated Oxygen Sensor Bank 1
Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

How to Fix the DTC P0136 1997 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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0136 1997 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.

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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 1997 Toyota Camry Code

1. What are the common symptoms of OBDII code P0136 in a 1997 Toyota Camry?

The common symptoms include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light.

2. What does the OBDII code P0136 for a 1997 Toyota Camry indicate?

OBDII code P0136 indicates a Heated Oxygen Sensor Circuit Malfunction for Bank 1 Sensor 2 in the vehicle's exhaust system.

3. What are the possible causes of the Heated Oxygen Sensor Circuit Malfunction in a 1997 Toyota Camry?

Possible causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the vehicle's engine control module.

4. How can I diagnose the cause of OBDII code P0136 in my 1997 Toyota Camry?

You can use an OBDII scanner to read the code and then inspect the oxygen sensor, wiring, and connectors for any visible damage. Testing the sensor's resistance and voltage output can also help diagnose the issue.

5. Can I drive my 1997 Toyota Camry with the P0136 code?

It is not recommended to drive your vehicle for an extended period with the P0136 code as it can lead to poor engine performance and potential damage to the catalytic converter.

6. How do I repair the Heated Oxygen Sensor Circuit Malfunction in my 1997 Toyota Camry?

Repairing the issue involves replacing the faulty oxygen sensor, repairing any damaged wiring or connectors, and clearing the error code with an OBDII scanner.

7. Is it easy to replace the oxygen sensor in a 1997 Toyota Camry?

Replacing the oxygen sensor can be a straightforward task with the right tools and some mechanical knowledge. However, it is recommended to consult a professional if you are unsure about the process.

8. Can a dirty air filter cause the OBDII code P0136 in a 1997 Toyota Camry?

While a dirty air filter can impact engine performance, it is unlikely to directly cause the Heated Oxygen Sensor Circuit Malfunction indicated by code P0136.

9. How much does it cost to repair OBDII code P0136 in a 1997 Toyota Camry?

The cost of repairing the issue can vary depending on the cause of the malfunction, the cost of parts, and labor charges. It is advisable to get a diagnostic from a mechanic for an accurate estimate.

10. Will resetting the error code fix the Heated Oxygen Sensor Circuit Malfunction in my 1997 Toyota Camry?

Resetting the error code may temporarily clear the check engine light, but it will not address the underlying issue causing the malfunction. It is important to diagnose and repair the problem to prevent it from recurring.