Audi P1426: Tank Ventilation Valve Open

Is your scanner showing Audi P1426?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Audi P1426: Tank Ventilation Valve Open

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$350-$550
Can I Still Drive?
:
Yes

What Does The Audi P1426 Code Mean?

Ignition off. The Evaporative Emission (EVAP) canister purge regulator valve in the tank venting system or activation wire has a short circuit to ground.

Engine started, engine running at a steady cruise speed, canister vent solenoid enabled, and the ECM detected an unexpected voltage condition on the Canister Vent solenoid circuit.

What Are The Potential Causes Of The Audi P1426 Code?

  • Activation wire has a short to ground
  • ECM has failed
  • EVAP canister has failed
  • 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

Recommended Parts

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

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

Reference Sources

Audi A4 Avant 95-01 Service Repair Manual, page 50.

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