Volkswagen P3056: O2 Sensor Before Catalytic Converter (Bank 1), Heating Circuit Regulation at Lower Impact
Is your scanner showing Volkswagen P3056?
No worries. We'll show you what it means and how to deal with it.
Volkswagen P3056: O2 Sensor Before Catalytic Converter (Bank 1), Heating Circuit Regulation at Lower Impact
OVERVIEWWhat Does The Volkswagen P3056 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 P3056 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
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
>>> Accessory Power Relay. Fuel Pump Relay. Powertrain Control Module Relay.
>>> 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 P3056, DTCDECODE.
