AutoCodes – Volkswagen – P1177 Volkswagen

P1177 Volkswagen Code - O2 Correction Behind Catalyst B1 Limit Attained

Quick Answer

P1177 Volkswagen indicates O2 Correction Behind Catalyst B1 Limit Attained. Common causes include Faulty O2 Sensor, Faulty Failed MAF Sensor, Vacuum leak on engine. 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: P1177 Volkswagen indicates O2 Correction Behind Catalyst B1 Limit Attained.
Common causes: Common causes include Faulty O2 Sensor, Faulty Failed MAF Sensor, Vacuum leak on engine.
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 11,350

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 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1177 Volkswagen Description

OBDII Code P1177 Volkswagen - O2 Correction Behind Catalyst B1 Limit Attained - AutoCodes.com — P1177 Volkswagen Code - O2 Correction Behind Catalyst B1 Limit Attained

What does this mean?

What are the Possible Causes of the DTC P1177 Volkswagen?

Faulty O2 Sensor
Faulty Failed MAF Sensor
Vacuum leak on engine
Lean Air/Fuel ratio

How to Fix the DTC P1177 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 P1177 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.