AutoCodes – Volkswagen – P1426 Volkswagen

P1426 Volkswagen Code - Tank Ventilation Valve Open Circuit

Quick Answer

Evaporative Emissions (EVAP) canister purge regulator valve in tank venting system or activation wire has a short circuit to ground. Common causes include Faulty EVAP Canister Purge Regulator Valve, EVAP Canister Purge Regulator Valve harness is open or shorted, EVAP Canister Purge Regulator Valve 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: P1426 Volkswagen indicates Tank Ventilation Valve Open Circuit.
Common causes: Common causes include Faulty EVAP Canister Purge Regulator Valve, EVAP Canister Purge Regulator Valve harness is open or shorted, EVAP Canister Purge Regulator Valve 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 39,479

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1426 Volkswagen Description

Evaporative Emissions (EVAP) canister purge regulator valve in tank venting system or activation wire has a short circuit to ground.

OBDII Code P1426 Volkswagen - Tank Ventilation Valve Open Circuit - AutoCodes.com — P1426 Volkswagen Code - Tank Ventilation Valve Open Circuit

What does this mean?

What are the Possible Causes of the DTC P1426 Volkswagen?

Faulty EVAP Canister Purge Regulator Valve
EVAP Canister Purge Regulator Valve harness is open or shorted
EVAP Canister Purge Regulator Valve circuit poor electrical connection

How to Fix the DTC P1426 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 P1426 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.