AutoCodes – Chevrolet – P0135 2014 Chevrolet Silverado

P0135 2014 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 2014 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 636

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 2014 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 2014 Chevrolet Silverado - HO2S Heater Performance Bank 1 Sensor 1 - AutoCodes.com — P0135 2014 Chevrolet Silverado Code - HO2S Heater Performance Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0135 2014 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 2014 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 2014 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 2014 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 2014 Chevrolet Silverado Code

1. What does OBDII code P0135 on a 2014 Chevrolet Silverado mean?

Code P0135 indicates an issue with the HO2S (Heated Oxygen Sensor) heater performance for Bank 1 Sensor 1.

2. What are the common symptoms of OBDII code P0135 on a 2014 Chevrolet Silverado?

Common symptoms include poor fuel economy, rough idling, engine misfires, and the illumination of the check engine light.

3. What are the possible causes of OBDII code P0135 on a 2014 Chevrolet Silverado?

Potential causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the vehicle's ECM (Engine Control Module).

4. How can I diagnose the OBDII code P0135 on my 2014 Chevrolet Silverado?

You can diagnose this code by using an OBDII scanner to retrieve the specific error code, inspecting the oxygen sensor and related wiring for damage, and checking the fuse related to the sensor heater circuit.

5. How do I repair OBDII code P0135 on a 2014 Chevrolet Silverado?

Repair options may include replacing the Bank 1 Sensor 1 oxygen sensor, repairing or replacing damaged wiring or connectors, checking and replacing the fuse if necessary, or addressing any ECM issues.

6. Can I continue driving my 2014 Chevrolet Silverado with OBDII code P0135?

While the vehicle may still be operable with this code, it is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

7. How much does it typically cost to fix OBDII code P0135 on a 2014 Chevrolet Silverado?

The cost of repairing this code can vary depending on the specific cause, but it may range from $100 to $300 for parts and labor, excluding diagnostic fees.

8. Are there any DIY tips for troubleshooting OBDII code P0135 on a 2014 Chevrolet Silverado?

DIY tips include checking the oxygen sensor connections, inspecting the sensor wiring for damage, and ensuring the fuse related to the sensor heater circuit is intact before seeking professional assistance.

9. Will resetting the check engine light resolve OBDII code P0135 on my 2014 Chevrolet Silverado?

Resetting the check engine light may temporarily clear the code, but if the underlying issue causing code P0135 is not addressed, the light is likely to reappear after some driving cycles.

10. How often does OBDII code P0135 occur in 2014 Chevrolet Silverado vehicles?

Code P0135 can occur in 2014 Chevrolet Silverado vehicles due to various factors, including sensor wear and tear, electrical issues, or environmental conditions, but it is not considered a common recurring problem.