Volkswagen P3255: O2 Sensor Before Catalytic Converter (Bank 1), Heating Circuit Regulation at Upper Impact

Is your scanner showing Volkswagen P3255?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Volkswagen P3255: O2 Sensor Before Catalytic Converter (Bank 1), Heating Circuit Regulation at Upper Impact

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$300
Can I Still Drive?
:
Yes (Short-term only)

What Does The Volkswagen P3255 Code Mean?

Engine started, battery voltage must be at least 11.5v, all electrical components must be off, parking brake must be engaged (to keep daytime driving lights off), automatic transmission selector must be in park, the exhaust system must be properly sealed

What Are The Potential Causes Of The Volkswagen P3255 Code?

  • Check activation of Recirculation Pump Relay
  • Oxygen sensor (before catalytic converter) is faulty
  • Oxygen sensor (behind catalytic converter) is faulty
  • Oxygen sensor heater (before catalytic converter) is faulty
  • Oxygen sensor heater (behind catalytic converter) 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:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> MOSTPLUS Oxygen Sensor Downstream

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

Reference Sources

Volkswagen P3255, DTCDECODE.

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