OBD II Fault Code P1057 :

Description of Fault code P1057

FUEL RAIL PRESSURE CONTROL VALVE CIRCUIT OPEN

Possible failuer P1057

• Metering Unit Actuator internal open
• M-PROP Actuator harness open

Diagnostic Procedure using AutoHex II Scan Tool

• When minute current is drawn on the inactive drive circuit, the open which can't be drawn the current is detected for a set period of time.

Test Conditions using AutoHex tester

• IG ON (II) and when the OFF direction of Metering Unit energization

Clear Fault codes Conditions

• When minute current is drawn on the inactive drive circuit, the open which can't be drawn the current is detected for a set period of time.

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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