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P2A01 Diagnostic Trouble Code Discussion for May 2014

Heated Oxygen Sensor (Bank 1 Sensor 2) Closed Loop Performance

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Trouble Ticket Help Requests for DTC P2A01
Help Request Posted
2007 Dodge Ram 3500 ST 6.7L MIL Lamp on VIN: 3D7MX38A07
P2A01: O2 sensor 1/2 circuit performance. Code P2A01(O2 sensor 1/2 circuit performance) keeps returning after about 300km. Replaced both O2 sensors a year ago per TSB for code P2A01. Was good for about 9 months and now code has returned. Tested both O2 sensor heaters(good-3.4 ohms)Both have heater pow...
May 01, 2014