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P0139 Diagnostic Trouble Code Discussion for February 2019

Heated Oxygen Sensor (Bank 1 Sensor 2) Slow Response

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Trouble Ticket Help Requests for DTC P0139
Help Request Posted
2003 Volkswagen Beetle Turbo S 1.8L Poor Idle Quality, MIL Lamp on VIN: 3VWFE21C13
P0139: post catalyst lambda sensor slow response. Hello all. This New Beetle S is having an issue where it will idle too high once warmed up. Sticks at around 1100 RPM, and will (eventually) set the P0507 DTC. I have not yet had the lambda sensor DTC return, and lambda control stays around 0 at all times,...
February 05, 2019