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P0136 Saturn Code - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

Quick Answer

The P0136 diagnostic trouble code (DTC) for Saturn vehicles indicates a Heated Oxygen Sensor (HO2S) circuit malfunction for Bank 1 Sensor 2. Common causes include Faulty oxygen sensor, Damaged wiring or connectors, Exhaust leaks. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0136 Saturn indicates Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2.
Common causes
Common causes include Faulty oxygen sensor, Damaged wiring or connectors, Exhaust leaks.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0136 Saturn Description

The P0136 diagnostic trouble code (DTC) for Saturn vehicles indicates a Heated Oxygen Sensor (HO2S) circuit malfunction for Bank 1 Sensor 2. The HO2S, also known as the oxygen sensor, is responsible for measuring the oxygen content in the exhaust gases and transmitting this data to the engine control module (ECM). Bank 1 Sensor 2 refers to the oxygen sensor located downstream of the catalytic converter on the side of the engine with cylinder 1.

OBDII Code P0136 Saturn - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2
P0136 Saturn Code - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

Common Causes of P0136 Saturn

  1. Faulty oxygen sensor
  2. Damaged wiring or connectors
  3. Exhaust leaks
  4. Contaminated sensor
  5. ECM software issues

Symptoms of P0136 Saturn

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

How to Fix P0136 Saturn

  1. Diagnose the issue using a scan tool to confirm the P0136 code and pinpoint the exact cause.
  2. Inspect the oxygen sensor wiring and connectors for any damage or corrosion. Repair or replace as needed.
  3. Check for exhaust leaks and repair them to ensure proper oxygen sensor readings.
  4. Replace the Bank 1 Sensor 2 oxygen sensor if it is found to be faulty or contaminated.
  5. Clear the code from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0136 Saturn

The typical cost to repair a P0136 code on a Saturn vehicle can range from $150 to $400, including parts and labor. This estimate may vary depending on the specific model of the vehicle, the location of the repair shop, and the quality of the replacement parts used. Additionally, diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate.

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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 Saturn Code

1. What does OBDII code P0136 for a Saturn indicate?

The code P0136 on a Saturn refers to a Heated Oxygen Sensor Circuit Malfunction in Bank 1 Sensor 2.

2. What are common symptoms of a P0136 code in a Saturn?

Common symptoms of a P0136 code in a Saturn may include poor fuel economy, rough idling, and potential engine hesitation or misfiring.

3. What are the possible causes of a P0136 code in a Saturn?

Potential causes of a P0136 code in a Saturn include a faulty oxygen sensor, damaged wiring or connectors, or issues with the engine control module (ECM).

4. How can I diagnose a P0136 code in my Saturn?

To diagnose a P0136 code in your Saturn, you can use an OBDII scanner to read the code and then inspect the oxygen sensor, wiring, and connectors for any visible damage.

5. Can I drive my Saturn with a P0136 code?

While it may be possible to drive your Saturn with a P0136 code, it is not recommended as it can lead to decreased fuel efficiency and potential damage to the catalytic converter.

6. How can I repair a P0136 code in my Saturn?

Repairing a P0136 code in your Saturn may involve replacing the oxygen sensor in Bank 1 Sensor 2, checking and repairing any damaged wiring or connectors, and resetting the ECM.

7. Does a P0136 code affect emissions in my Saturn?

Yes, a P0136 code in your Saturn can affect emissions by causing the vehicle to run less efficiently and potentially produce higher levels of harmful emissions.

8. Are there any maintenance tips to prevent a P0136 code in my Saturn?

Regularly inspecting and replacing oxygen sensors as part of routine maintenance can help prevent a P0136 code in your Saturn.

9. Can a P0136 code in my Saturn cause other issues if left unrepaired?

If left unrepaired, a P0136 code in your Saturn can potentially lead to reduced engine performance, increased fuel consumption, and further damage to the engine or emissions system.

10. How much does it typically cost to repair a P0136 code in a Saturn?

The cost to repair a P0136 code in a Saturn can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

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