Engine-CodesScion – P0136 Scion

P0136 Scion Code - Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

Quick Answer

The P0136 diagnostic trouble code for Scion vehicles indicates an Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 error. Common causes include Faulty oxygen sensor, Damaged wiring or connectors, ECM malfunction. 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 Scion indicates Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2.
Common causes
Common causes include Faulty oxygen sensor, Damaged wiring or connectors, ECM malfunction.
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 12, 2024
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Code P0136 Scion Description

The P0136 diagnostic trouble code for Scion vehicles indicates an Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 error. This specific code points to a problem with the oxygen sensor located after the catalytic converter on bank 1 of the engine. The oxygen sensor is responsible for 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. When this sensor malfunctions, it can lead to issues with the vehicle's performance, emissions, and fuel efficiency.

OBDII Code P0136 Scion - Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2
P0136 Scion Code - Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

Common Causes of P0136 Scion

  1. Faulty oxygen sensor
  2. Damaged wiring or connectors
  3. ECM malfunction
  4. Exhaust leaks
  5. Fuel system issues

Symptoms of P0136 Scion

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation or lack of acceleration
  4. Check engine light illuminated on the dashboard

How to Fix P0136 Scion

  1. Use an OBD-II scanner to confirm the P0136 code and pinpoint the location of the faulty oxygen sensor.
  2. Inspect the wiring and connectors for any damage or corrosion. Repair or replace as needed.
  3. Remove the old oxygen sensor and install a new one in its place.
  4. Clear the error code from the ECM memory using the OBD-II scanner.
  5. Test drive the vehicle to ensure the issue has been resolved and the check engine light does not reappear.

Cost to Fix P0136 Scion

The typical repair costs for addressing a P0136 code on a Scion vehicle can range from $150 to $300 for parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less for repairs.

Tech Notes for P0136 Scion

Replacing the Oxygen Sensor Bank 1 Sensor 2 (Rear Oxygen Sensor Bank 1 or Downstream Oxygen Sensor Bank 1) usually takes care of the problem.

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Information for Specific Scion Models

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.

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