Volkswagen P1546: Boost Pressure Control Valve Short to B+

Is your scanner showing Volkswagen P1546?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Volkswagen P1546: Boost Pressure Control Valve Short to B+

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$200-$350
Can I Still Drive?
:
Yes

What Does The Volkswagen P1546 Code Mean?

Engine started, battery voltage at least 11.5v, all electrical components off, ground connections between engine and chassis well connected, coolant temperature at least 80-degrees Celicius. The ECM detected an short in the boost pressure control valve.

What Are The Potential Causes Of The Volkswagen P1546 Code?

  • Charge air pressure sensor is faulty
  • Voltage supply to the charge air pressure sensor is open or shorted
  • Check the charge air system for leaks
  • Recirculating valve for turbocharger is faulty
  • Turbocharging system is damaged or not functioning properly
  • Turbocharger recirculating valve is faulty
  • Vacuum diagramfor turbocharger is out of adjustment
  • Wastegate bypass regulator valve is faulty
  • Boost sensor has 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:

>>> Volkswagen Manifold Absolute Pressure Map Sensor
>>> N75 Turbocharger Wastegate Control Valve For Audi
>>> Volkswagen Jetta Turbocharger Boost Sensor
>>> Volkswagen Engine Control Module

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

Reference Sources

Volkswagen P1546, DTCDECODE.

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