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Engine-Codes – Chevrolet – P0135 2018 Chevrolet Silverado

P0135 2018 Chevrolet Silverado Code - HO2S Heater Performance Bank 1 Sensor 1

Quick Answer

The P0135 code for a 2018 Chevrolet Silverado indicates an issue with the HO2S (Heated Oxygen Sensor) Heater Performance on Bank 1 Sensor 1. Common causes include Faulty HO2S heater, Wiring or connector issues in the sensor circuit, ECM software or programming issues. 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 HO2S heater, Wiring or connector issues in the sensor circuit, ECM software or programming issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P0135 2018 Chevrolet Silverado Description

The P0135 code for a 2018 Chevrolet Silverado indicates an issue with the HO2S (Heated Oxygen Sensor) Heater Performance on Bank 1 Sensor 1. This sensor is responsible for monitoring the oxygen levels in the exhaust gases and sending this information to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. The heater in the sensor helps it reach operating temperature quickly for accurate readings. When the ECM detects that the heater performance is not within the expected range, it triggers the P0135 code.

OBDII Code P0135 2018 Chevrolet Silverado - HO2S Heater Performance Bank 1 Sensor 1
P0135 2018 Chevrolet Silverado Code - HO2S Heater Performance Bank 1 Sensor 1

Common Causes of P0135 2018 Chevrolet Silverado

  1. Faulty HO2S heater.
  2. Wiring or connector issues in the sensor circuit.
  3. ECM software or programming issues.
  4. Exhaust system leaks.
  5. Engine coolant temperature sensor malfunction.

Symptoms of P0135 2018 Chevrolet Silverado

  1. Check Engine Light illuminated on the dashboard.
  2. Decreased fuel efficiency.
  3. Rough idling or engine misfires.
  4. Poor acceleration or performance.
  5. Increased emissions.

How to Fix P0135 2018 Chevrolet Silverado

  1. Diagnose the issue by checking the wiring, connectors, and sensor functionality.
  2. Test the HO2S heater for proper operation.
  3. Replace the HO2S sensor if the heater is faulty.
  4. Repair any wiring or connector issues.
  5. Clear the error code and reset the ECM.

Cost to Fix P0135 2018 Chevrolet Silverado

The cost of repairing a P0135 code on a 2018 Chevrolet Silverado can vary depending on the root cause of the issue and the specific parts needed. On average, the parts for this repair can range from $50 to $200, while the labor costs can be between $100 to $200. Overall, the total repair cost could be anywhere from $150 to $400. Keep in mind that additional diagnostic time and labor rates at auto repair shops can affect the final cost. It's recommended to obtain quotes from different shops to compare prices.

What does this mean?

Tech Notes for P0135 2018 Chevrolet Silverado

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.

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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.

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