OBD II Fault Code P0651 :

Description of Fault code P0651

SENSOR REFERENCE VOLTAGE B CIRCUIT MALFUNCTION

Possible failuer P0651

• Reference voltage line of the sensor which connected to Sensor Reference Voltage B short to power.
• Reference voltage line of the sensor which connected to Sensor Reference Voltage B short to ground.

Diagnostic Procedure using AutoHex II Scan Tool

• Abnormal Sensor Reference Voltage is detected during predetermined duration.

Test Conditions using AutoHex tester

• Engine running.
• BATTERY voltage ≥ 10.5V

Clear Fault codes Conditions

• Abnormal Sensor Reference Voltage is detected during predetermined duration.

MIL Status

• Check Engine Light ON

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

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