AutoCodes – Dodge – P0136 Dodge

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

Quick Answer

The Heated Oxygen Sensor 2 (HO2S2) (Downstream), after the three-way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Exhaust gas leaks, Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1, Heated Oxygen Sensor 2 Bank 1 harness is open or shorted. 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 Dodge indicates Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2.
Common causes: Common causes include Exhaust gas leaks, Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1, Heated Oxygen Sensor 2 Bank 1 harness is open or shorted.
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 844

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 Dec 24, 2021

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0136 Dodge Description

The Heated Oxygen Sensor 2 (HO2S2) (Downstream), after the 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 maintain near the ideal stoichiometric ratio. The HO2S2 output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Powertrain Control Module (PCM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S2 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 PCM interprets Lean when the HO2S2 voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The PCM interprets Rich when the HO2S2 voltage is above 0.45 V. The P0136 code will set when the PCM detects that the HO2S2 signal voltage is out of range for an extended period.

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

What does this mean?

What are the Possible Causes of the DTC P0136 Dodge?

Exhaust gas leaks
Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1
Heated Oxygen Sensor 2 Bank 1 harness is open or shorted
Heated Oxygen Sensor 2 Bank 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors

How to Fix the DTC P0136 Dodge?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0136 Dodge 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 Dodge Code

1. What are the common symptoms of OBDII code P0136 in a Dodge related to the Heated Oxygen Sensor Circuit malfunction?

- Common symptoms include poor fuel economy, rough idle, engine misfires, and the illumination of the Check Engine Light.

2. What are the possible causes of the Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 code (P0136) in a Dodge?

- Potential causes can include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine's fuel system.

3. How can I diagnose the Heated Oxygen Sensor Circuit Malfunction in my Dodge with code P0136?

- A diagnostic scan tool can be used to retrieve the specific trouble code. Additionally, a visual inspection of the sensor and its wiring, along with testing the sensor's resistance, can help pinpoint the issue.

4. What is the role of Bank 1 Sensor 2 in the Heated Oxygen Sensor Circuit Malfunction code P0136 on a Dodge?

- Bank 1 Sensor 2 refers to the downstream oxygen sensor located after the catalytic converter. It measures the efficiency of the catalytic converter and helps the engine control module adjust fuel trim.

5. How can I repair the Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 code (P0136) in my Dodge?

- Repair options include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or addressing any fuel system issues.

6. Can driving with an unresolved P0136 code cause further damage to my Dodge?

- Continuing to drive with this code may lead to decreased fuel efficiency and engine performance. It is recommended to address the issue promptly to prevent potential damage to the catalytic converter.

7. Is it possible to reset the Check Engine Light after repairing the Heated Oxygen Sensor Circuit Malfunction in a Dodge with code P0136?

- Yes, the Check Engine Light can be reset using a diagnostic scan tool after the repair has been completed. This will clear the code and turn off the warning light.

8. How much does it typically cost to replace the Bank 1 Sensor 2 oxygen sensor in a Dodge when dealing with code P0136?

- The cost can vary depending on the model and year of the Dodge, as well as labor costs. On average, the replacement of an oxygen sensor can range from $100 to $300.

9. Are there any preventive maintenance steps I can take to avoid encountering the Heated Oxygen Sensor Circuit Malfunction code P0136 in my Dodge?

- To prevent this issue, it is advisable to follow the manufacturer's recommended maintenance schedule, including regular inspections of the oxygen sensors and exhaust system components.