AutoCodes – Chevrolet – P1155 Chevrolet

P1155 Chevrolet Code - HO2S Lean Average Bank 2 Sensor 1

Quick Answer

P1155 Chevrolet indicates HO2S Lean Average Bank 2 Sensor 1. Common causes include Faulty O2 Sensor Heater Bank 2 Sensor 1, O2 Sensor Heater Bank 2 Sensor 1 harness is open or shorted, O2 Sensor Heater Bank 2 Sensor 1 circuit poor electrical connection. 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: P1155 Chevrolet indicates HO2S Lean Average Bank 2 Sensor 1.
Common causes: Common causes include Faulty O2 Sensor Heater Bank 2 Sensor 1, O2 Sensor Heater Bank 2 Sensor 1 harness is open or shorted, O2 Sensor Heater Bank 2 Sensor 1 circuit poor electrical connection.
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.

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Code Popularity 6,166

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 03, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1155 Chevrolet Description

OBDII Code P1155 Chevrolet - HO2S Lean Average Bank 2 Sensor 1 - AutoCodes.com — P1155 Chevrolet Code - HO2S Lean Average Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P1155 Chevrolet?

Faulty O2 Sensor Heater Bank 2 Sensor 1
O2 Sensor Heater Bank 2 Sensor 1 harness is open or shorted
O2 Sensor Heater Bank 2 Sensor 1 circuit poor electrical connection

How to Fix the DTC P1155 Chevrolet?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1155 Chevrolet 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 P1155 Chevrolet code?

Need more information on how to fix the P1155 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1155 Chevrolet 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 P1155 Chevrolet Code

1. What are common symptoms of OBDII code P1155 in a Chevrolet, indicating HO2S Lean Average Bank 2 Sensor 1 issue?

- Common symptoms include decreased fuel efficiency, rough idling, engine stalling, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code P1155 in a Chevrolet related to HO2S Lean Average Bank 2 Sensor 1?

- Causes may include a faulty oxygen sensor, vacuum leak, fuel system issues, exhaust leaks, or a malfunctioning mass airflow sensor.

3. How can I diagnose the HO2S Lean Average Bank 2 Sensor 1 issue triggering OBDII code P1155 in my Chevrolet?

- Diagnose the issue by performing a thorough inspection of the oxygen sensor, checking for vacuum leaks, testing the fuel system, and scanning for exhaust leaks.

4. What are some repair tips for addressing OBDII code P1155 in a Chevrolet due to HO2S Lean Average Bank 2 Sensor 1?

- Repair tips include replacing the oxygen sensor, fixing any vacuum leaks, addressing fuel system problems, repairing exhaust leaks, or replacing a faulty mass airflow sensor.

5. Can driving with OBDII code P1155 related to HO2S Lean Average Bank 2 Sensor 1 in a Chevrolet cause further damage?

- Yes, driving with this issue may lead to decreased engine performance, increased emissions, and potential damage to the catalytic converter over time.

6. How urgent is it to address OBDII code P1155 indicating HO2S Lean Average Bank 2 Sensor 1 problem in a Chevrolet?

- It is recommended to address the issue promptly to prevent further damage, improve fuel efficiency, and ensure optimal engine performance.

7. Is it possible to reset the Check Engine Light triggered by OBDII code P1155 after fixing the HO2S Lean Average Bank 2 Sensor 1 issue in a Chevrolet?

- Yes, the Check Engine Light can be reset using an OBDII scanner after the underlying problem causing code P1155 has been successfully repaired.

8. Can a DIY enthusiast fix the OBDII code P1155 related to HO2S Lean Average Bank 2 Sensor 1 issue in a Chevrolet?

- Depending on the skill level and tools available, some DIY enthusiasts may be able to address this issue by following repair guides and procedures carefully.

9. Will the OBDII code P1155 related to HO2S Lean Average Bank 2 Sensor 1 in a Chevrolet cause the vehicle to fail an emissions test?

- Yes, this code may lead to increased emissions, potentially causing the vehicle to fail an emissions test until the underlying issue is resolved.

10. How much can I expect to pay for professional repairs related to OBDII code P1155 in a Chevrolet due to HO2S Lean Average Bank 2 Sensor 1?

- Repair costs can vary based on the specific problem, but expect to pay anywhere from $100 to $500 for parts and labor, depending on the extent of the repairs needed.