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OBD II Fault Code P2251 :

Description of Fault code P2251

A/F SENSOR NEGATIVE CURRENT CONTROL CIRCUIT OPEN

Possible failuer P2251

  • A/F sensor harness open.

Diagnostic Procedure using AutoHex II Scan Tool

  • Harness open is indirectly detected by Oxygen Concentration and Sensor Temperature.

Test Conditions using AutoHex tester

  • Engine running (Detection state can be confirmed by OBD STATUS)
  • BATTERY voltage ≥ 10.7V

Clear Fault codes Conditions

  • Harness open is indirectly detected by Oxygen Concentration and Sensor Temperature.

MIL Status

  • Check Engine Light ON

Programming BMW F Series


Note:

  • AutoHex II is a professional Auto diagnostic.
  • This fault code is a GERENRIC fault code, some cars may change the meaning of this fault code.
    To get the accurate fault code description you may use AutoHex II

More Fault codes:

OBD II Fault Code P2252
OBD II Fault Code P2253
OBD II Fault Code P2254
OBD II Fault Code P2255
OBD II Fault Code P2256
OBD II Fault Code P2257
OBD II Fault Code P2258
OBD II Fault Code P2259
OBD II Fault Code P225A
OBD II Fault Code P225B
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