AutoCodes – Chevrolet – P0135 2015 Chevrolet Silverado

P0135 2015 Chevrolet Silverado Code - HO2S Heater Performance Bank 1 Sensor 1

Quick Answer

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 1 Sensor 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: P0135 2015 Chevrolet Silverado indicates HO2S Heater Performance Bank 1 Sensor 1.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 1 Sensor 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 493

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 Mar 25, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0135 2015 Chevrolet Silverado Description

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach an operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensors to reach operating temperature. Voltage is provided to the heater by an ignition voltage circuit through a fuse. With the engine running, the ground is provided to the heater by the HO2S heater low control circuit through a low side driver within the Engine Control Module (ECM). The ECM uses Pulse Width Modulation (PWM) to control the HO2S heater operation to maintain a specific HO2S operating temperature range.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the HO2S 1 heater current is out of factory specifications.

OBDII Code P0135 2015 Chevrolet Silverado - HO2S Heater Performance Bank 1 Sensor 1 - AutoCodes.com — P0135 2015 Chevrolet Silverado Code - HO2S Heater Performance Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0135 2015 Chevrolet Silverado?

Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted
Heated Oxygen Sensor Bank 1 Sensor 1 circuit poor electrical connection
Heated Oxygen Sensor Bank 1 Sensor 1 circuit fuse
Faulty Engine Control Module (ECM)

How to Fix the DTC P0135 2015 Chevrolet Silverado?

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

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it takes the sensor to warm up and start sending an adequate signal. The code is set when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can cause the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the fuse and connector are OK, replacing the O2 Sensor usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0135 2015 Chevrolet Silverado 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 P0135 2015 Chevrolet Silverado Code

1. What does the OBDII code P0135 for a 2015 Chevrolet Silverado indicate?

The code P0135 indicates a malfunction in the HO2S (Heated Oxygen Sensor) heater circuit for Bank 1 Sensor 1 in a 2015 Chevrolet Silverado.

2. What are the common symptoms of the P0135 OBDII code on a 2015 Chevrolet Silverado?

Common symptoms of the P0135 code may include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.

3. What are the possible causes of the P0135 code in a 2015 Chevrolet Silverado?

Possible causes of the P0135 code include a faulty oxygen sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the P0135 OBDII code on my 2015 Chevrolet Silverado?

Diagnosing the P0135 code involves checking the oxygen sensor's wiring and connections, testing the sensor's heater circuit, inspecting the fuse related to the sensor, and scanning the ECM for any related trouble codes.

5. How do I repair the P0135 code on a 2015 Chevrolet Silverado?

Repairing the P0135 code may involve replacing the faulty oxygen sensor, repairing damaged wiring or connectors, replacing a blown fuse, or addressing any ECM issues identified during diagnosis.

6. Can I drive my 2015 Chevrolet Silverado with the P0135 code?

It is not recommended to drive your vehicle with the P0135 code present, as it can lead to decreased fuel efficiency, engine performance issues, and potential damage to other components over time.

7. How much does it typically cost to fix the P0135 code on a 2015 Chevrolet Silverado?

The cost of fixing the P0135 code can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor if you need to replace the oxygen sensor or repair wiring.

8. What should I do if the P0135 code keeps coming back on my 2015 Chevrolet Silverado?

If the P0135 code keeps reappearing after repairs, you may need to perform a more thorough diagnostic check, ensure all repairs were done correctly, or seek professional help to identify any underlying issues.

9. How often should the oxygen sensors be replaced in a 2015 Chevrolet Silverado?

Oxygen sensors typically last around 60,000 to 90,000 miles, but it's recommended to follow the manufacturer's maintenance schedule and replace them as needed to prevent issues like the P0135 code.

10. Will resetting the Check Engine Light resolve the P0135 code on my 2015 Chevrolet Silverado?

Simply resetting the Check Engine Light may temporarily clear the code, but it won't fix the underlying issue causing the P0135 code. It's important to diagnose and address the root cause of the problem.