AutoCodes – Volkswagen – P1140 Volkswagen

P1140 Volkswagen Code - HO2S22 Internal Resistance Too High

Quick Answer

P1140 Volkswagen indicates HO2S22 Internal Resistance Too High. Common causes include Faulty HO2S22 Sensor, HO2S22 Sensor harness is open or shorted, HO2S22 Sensor 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: P1140 Volkswagen indicates HO2S22 Internal Resistance Too High.
Common causes: Common causes include Faulty HO2S22 Sensor, HO2S22 Sensor harness is open or shorted, HO2S22 Sensor 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 10,824

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 Apr 30, 2019

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

OBDII Code P1140 Volkswagen - HO2S22 Internal Resistance Too High - AutoCodes.com — P1140 Volkswagen Code - HO2S22 Internal Resistance Too High

What does this mean?

What are the Possible Causes of the DTC P1140 Volkswagen?

Faulty HO2S22 Sensor
HO2S22 Sensor harness is open or shorted
HO2S22 Sensor circuit poor electrical connection

How to Fix the DTC P1140 Volkswagen?

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 Volkswagen 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 P1140 Volkswagen code?

Need more information on how to fix the P1140 Volkswagen code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1140 Volkswagen 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 P1140 Volkswagen Code

1. What are the common symptoms of OBDII code P1140 (HO2S22 Internal Resistance Too High) in a Volkswagen?

- Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and potential stalling.

2. What are the possible causes of OBDII code P1140 in a Volkswagen?

- The code P1140 can be triggered by issues such as a faulty oxygen sensor (HO2S22), wiring problems, exhaust leaks, or issues with the engine's air-fuel mixture.

3. How can I diagnose the cause of OBDII code P1140 in my Volkswagen?

- To diagnose the issue, you may need to perform a thorough inspection of the oxygen sensor and its wiring, check for exhaust leaks, and verify the engine's air-fuel ratio.

4. Can a dirty or contaminated oxygen sensor cause code P1140 in a Volkswagen?

- Yes, a dirty or contaminated oxygen sensor (HO2S22) can lead to an incorrect reading of the air-fuel mixture, triggering code P1140.

5. What are some repair tips for addressing OBDII code P1140 in a Volkswagen?

- Repair tips may include cleaning or replacing the oxygen sensor, repairing any damaged wiring, fixing exhaust leaks, and ensuring the engine's air-fuel mixture is within specifications.

6. Is it safe to continue driving my Volkswagen with OBDII code P1140 present?

- It is not recommended to drive your vehicle for an extended period with code P1140 present, as it can lead to further engine damage and decreased performance.

7. How can I reset OBDII code P1140 in my Volkswagen after making repairs?

- After addressing the underlying issue causing code P1140, you can reset the code using an OBDII scanner or by disconnecting the car battery for a few minutes.

8. Can a Volkswagen dealership help diagnose and repair OBDII code P1140?

- Yes, a Volkswagen dealership or a certified mechanic with experience in VW vehicles can assist in diagnosing and repairing OBDII code P1140.

9. Will fixing OBDII code P1140 improve my Volkswagen's fuel efficiency?

- Yes, addressing code P1140 and ensuring proper oxygen sensor function can lead to improved fuel efficiency and overall performance of your Volkswagen.

10. How often should I check my Volkswagen for potential issues related to OBDII code P1140?

- It is advisable to perform regular maintenance checks on your Volkswagen, including monitoring for any signs or symptoms that may indicate problems related to code P1140.