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P2270 Diagnostic Trouble Code Discussion for January 2012

Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Lean

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Trouble Ticket Help Requests for DTC P2270
Help Request Posted
2004 Hyundai Elantra GLS 2.0L MIL Lamp on VIN: KMHDN46D94
P2270: Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Stuck Lean. These three codes will repeatedly set every couple of weeks. Fuel psi and volume good. Plugs have slight wear. Have repeatedly been on phone with tech line. My readings are as follows.stft -1.5 to .08 ltft 4.7 b1s1 .480 b1s2 .565 all at idle. I can make the re...
January 30, 2012