AutoCodes – Chevrolet – P1140 Chevrolet

P1140 Chevrolet Code - HO2S Transition Time Ratio Bank 1 Sensor 2

Quick Answer

P1140 Chevrolet indicates HO2S Transition Time Ratio Bank 1 Sensor 2. Common causes include Faulty HO2S Bank 1 Sensor 2, HO2S Bank 1 Sensor 2 harness is open or shorted, HO2S Bank 1 Sensor 2 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: P1140 Chevrolet indicates HO2S Transition Time Ratio Bank 1 Sensor 2.
Common causes: Common causes include Faulty HO2S Bank 1 Sensor 2, HO2S Bank 1 Sensor 2 harness is open or shorted, HO2S Bank 1 Sensor 2 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 5,390

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 Apr 30, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1140 Chevrolet Description

OBDII Code P1140 Chevrolet - HO2S Transition Time Ratio Bank 1 Sensor 2 - AutoCodes.com — P1140 Chevrolet Code - HO2S Transition Time Ratio Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P1140 Chevrolet?

Faulty HO2S Bank 1 Sensor 2
HO2S Bank 1 Sensor 2 harness is open or shorted
HO2S Bank 1 Sensor 2 circuit poor electrical connection

How to Fix the DTC P1140 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 P1140 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.

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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.