Engine-Codes.com
Engine-Codes – GMC – P1165 GMC

P1165 GMC Code - HO2S Cross Counts Bank 2 Sensor 3

Quick Answer

The P1165 diagnostic trouble code for GMC vehicles refers to an issue with the HO2S (Heated Oxygen Sensor) Cross Counts for Bank 2 Sensor 3. Common causes include Faulty HO2S on Bank 2 Sensor 3, Wiring or connector issues, Exhaust system leaks. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1165 GMC indicates HO2S Cross Counts Bank 2 Sensor 3.
Common causes
Common causes include Faulty HO2S on Bank 2 Sensor 3, Wiring or connector issues, Exhaust system leaks.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1165 GMC Description

The P1165 diagnostic trouble code for GMC vehicles refers to an issue with the HO2S (Heated Oxygen Sensor) Cross Counts for Bank 2 Sensor 3. This code indicates that the HO2S located on Bank 2 Sensor 3 is not operating within the expected parameters, which can lead to potential problems with the vehicle's fuel efficiency, emissions, and overall performance.

OBDII Code P1165 GMC - HO2S Cross Counts Bank 2 Sensor 3
P1165 GMC Code - HO2S Cross Counts Bank 2 Sensor 3

Common Causes of P1165 GMC

  1. Faulty HO2S on Bank 2 Sensor 3
  2. Wiring or connector issues
  3. Exhaust system leaks
  4. Engine vacuum leaks
  5. ECM malfunction

Symptoms of P1165 GMC

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Illuminated check engine light
  5. Increased emissions

How to Fix P1165 GMC

  1. Diagnose the issue by using a scan tool to retrieve the specific trouble code and further investigate the HO2S on Bank 2 Sensor 3.
  2. Inspect the wiring and connectors associated with the HO2S for any damage or corrosion, replacing as necessary.
  3. Check for exhaust system leaks and repair or replace any damaged components.
  4. Test the HO2S on Bank 2 Sensor 3 to ensure proper functioning, replacing it if found to be faulty.
  5. Clear the trouble code from the ECM's memory and perform a road test to verify that the issue has been resolved.

Cost to Fix P1165 GMC

The typical repair costs for addressing the P1165 code can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair for this code can range from $200 to $500, including the cost of a new HO2S sensor if needed. However, it is important to note that labor rates and diagnosis fees at auto repair shops can vary significantly, so it is advisable to consult with a trusted mechanic or shop for a more accurate estimate based on your vehicle's make and model.

Need more information about the P1165 GMC code?

Need more information on how to fix the P1165 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1165 GMC code diagnosed by a professional: Find a repair shop in your area

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 P1165 GMC Code

No Frequently Asked Questions about P1165 GMC Code found.

Discuss the causes and fixes for P1165 GMC OBDII Code

Submit a New Comment

Code P1165 GMC comments

No comments found for this page.