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Elantra GLS, Standard
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DTC Trouble Shooting Procedures
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DTC P2270 & P2271: O2 Sensor Signal Stuck (Bank 1, Sensor 2)
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DTC Detecting Condition
DTC P2270 & P2271: O2 Sensor Signal Stuck (Bank 1, Sensor 2): DTC Detecting Condition
Fig 1: DTC P2270 & P2271: Detecting Conditions & Probable Causes
Courtesy of HYUNDAI MOTOR CO.