P2270 Diagnostic Trouble Code Discussion for August 2011
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Lean
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| Help Request | Posted | |
| 2004 Hyundai Elantra GLS 2.0L MIL Lamp on VIN: KMHDN46D74 P2270: Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Stuck Lean. car came in p2096 p2196 and p2270 upstream sensor reading about 2450mv -4000mv down stream reading about 800mv changing down to 0 and back up with the throttle We installed a walker 250-25012 upstream o2 sensor and the same results if we unplug the upstream s... |
August 30, 2011 |
