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P2251

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P2251 OBD-II Trouble Code: O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1
P2251 P2251 code definition O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1 What the P2251 code means P2251 is an OBD-II generic code. The engine control module (ECM) monitors the negative current control of the O2 sensor heater...

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