Volkswagen P1409: Tank Ventilation Valve Circuit Malfunction Conditions

Is your scanner showing Volkswagen P1409?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Volkswagen P1409: Tank Ventilation Valve Circuit Malfunction Conditions

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$200
Can I Still Drive?
:
Yes (Short-term only)

What Does The Volkswagen P1409 Code Mean?

Key on or engine running; and the ECM detected a too high or too low voltage level in the tank ventilation valve circuit.

What Are The Potential Causes Of The Volkswagen P1409 Code?

  • EVAP canister purge regulator valve has failed
  • Activation wire is shorting to positive
  • EVAP canister system has an improper or broken seal
  • Evaporative Emission (EVAP) canister purge regulator valve 1 is faulty
  • Leak Detection Pump (LDP) is faulty
  • Fuel filler cap is not properly closed
  • Lock ring on fuel pump not tightened
  • Hoses between EVAP canister and purge regulator valve have failed
  • ECM has failed

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Volkswagen Engine Control Module
>>> Vapor Canister Purge Valve Solenoid
>>> EVAPCANIST. Vapor Canister. Fits Jetta, Jetta GLI
>>> Dorman 310-601 Evaporative Emissions System Leak Detection Pump
>>> Volkswagen Fuel Tank Filler Cap
>>> Autobahn88 Silicone Vacuum Hose Dress Up DIY Kit

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Volkswagen P1409, DTCDECODE.

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