AutoCodes – Volkswagen – P1121 Volkswagen

P1121 Volkswagen Code - HO2S Sensor Heater Circuit Short To Ground Bank 2 Sensor 2

Quick Answer

P1121 Volkswagen indicates HO2S Sensor Heater Circuit Short To Ground Bank 2 Sensor 2. Common causes include Faulty HO2 Sensor Bank 2 Sensor 2, HO2 Sensor Bank 2 Sensor 2 harness is open or shorted, HO2 Sensor Bank 2 Sensor 2 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: P1121 Volkswagen indicates HO2S Sensor Heater Circuit Short To Ground Bank 2 Sensor 2.
Common causes: Common causes include Faulty HO2 Sensor Bank 2 Sensor 2, HO2 Sensor Bank 2 Sensor 2 harness is open or shorted, HO2 Sensor Bank 2 Sensor 2 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 4,737

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 25, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1121 Volkswagen Description

OBDII Code P1121 Volkswagen - HO2S Sensor Heater Circuit Short To Ground Bank 2 Sensor 2 - AutoCodes.com — P1121 Volkswagen Code - HO2S Sensor Heater Circuit Short To Ground Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P1121 Volkswagen?

Faulty HO2 Sensor Bank 2 Sensor 2
HO2 Sensor Bank 2 Sensor 2 harness is open or shorted
HO2 Sensor Bank 2 Sensor 2 circuit poor electrical connection

How to Fix the DTC P1121 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 P1121 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.

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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.