AutoCodes – Chevrolet – P0135 2018 Chevrolet Silverado

P0135 2018 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 2018 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 731

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 2018 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 2018 Chevrolet Silverado - HO2S Heater Performance Bank 1 Sensor 1 - AutoCodes.com — P0135 2018 Chevrolet Silverado Code - HO2S Heater Performance Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0135 2018 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 2018 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 2018 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.

Need more information about the P0135 2018 Chevrolet Silverado code?

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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 2018 Chevrolet Silverado Code

1. What is OBDII code P0135 on a 2018 Chevrolet Silverado?

The OBDII code P0135 on a 2018 Chevrolet Silverado refers to the HO2S (Heated Oxygen Sensor) Heater Performance Bank 1 Sensor 1 error.

2. What are the common symptoms of OBDII code P0135 on a 2018 Chevrolet Silverado?

Common symptoms of OBDII code P0135 on a 2018 Chevrolet Silverado may include poor fuel economy, rough idling, and an illuminated check engine light.

3. What causes the OBDII code P0135 on a 2018 Chevrolet Silverado?

The OBDII code P0135 on a 2018 Chevrolet Silverado is often caused by a faulty HO2S (Heated Oxygen Sensor) Bank 1 Sensor 1 or issues with the sensor's heating element.

4. How can I diagnose the OBDII code P0135 on a 2018 Chevrolet Silverado?

To diagnose the OBDII code P0135 on a 2018 Chevrolet Silverado, you can use an OBDII scanner to read the code, visually inspect the sensor and its wiring, and perform testing on the sensor's heater circuit.

5. Can I drive my 2018 Chevrolet Silverado with OBDII code P0135?

It is not recommended to drive your 2018 Chevrolet Silverado with the OBDII code P0135 for an extended period as it can lead to decreased fuel efficiency and potential damage to the vehicle's catalytic converter.

6. How do I repair OBDII code P0135 on a 2018 Chevrolet Silverado?

The repair for OBDII code P0135 on a 2018 Chevrolet Silverado typically involves replacing the HO2S Bank 1 Sensor 1, checking and repairing any damaged wiring, and resetting the check engine light.

7. Can a DIY enthusiast fix OBDII code P0135 on a 2018 Chevrolet Silverado?

A DIY enthusiast with automotive repair experience can potentially fix OBDII code P0135 on a 2018 Chevrolet Silverado by following the proper diagnostic procedures and replacing the faulty sensor.

8. Is it necessary to reset the OBDII code P0135 after repairs on a 2018 Chevrolet Silverado?

It is recommended to reset the OBDII code P0135 after repairs on a 2018 Chevrolet Silverado to clear the error code and ensure that the issue has been successfully addressed.

9. How much does it cost to fix OBDII code P0135 on a 2018 Chevrolet Silverado?

The cost to fix OBDII code P0135 on a 2018 Chevrolet Silverado can vary depending on the labor rates and parts costs, but it is generally an affordable repair compared to more complex engine issues.

10. Can a dealership service department help with OBDII code P0135 on a 2018 Chevrolet Silverado?

Yes, the dealership service department for Chevrolet can assist with diagnosing and repairing OBDII code P0135 on a 2018 Chevrolet Silverado using their expertise and specialized equipment.