B4/15 (Fuel pressure sensor) : Short circuit to positive or open circuit (P0193)

P0193
B4/15 (Fuel pressure sensor) : Short circuit to positive or open circuit (P0193)
Possible cause:
­ B4/15 (Fuel pressure sensor)
Affected functions:
­
Engine running
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Test 1: Check component B4/15 (Fuel pressure sensor).
1. Check component B4/15 (Fuel pressure sensor).
Test 1.1: Check component B4/15 (Fuel pressure sensor) using actual value.
Test 1.2: Check power supply of component B4/15 (Fuel pressure sensor).
1.1. Check component B4/15 (Fuel pressure sensor) using actual value.
Test prerequisite
­ Relevant fault code exists or there is a complaint.
Test sequence
­ Operate engine at idling speed.
Status of the relevant actual values:
­ Fuel pressure ( Absolute value ):Warning! Communication with ECU required.
­ B4/15 (Fuel pressure sensor) : Specified pressure ( Absolute value ):Warning! Communication with ECU required.
Specified values
­ Fuel pressure=Specified pressure
Question
­
Was the test o.k.?
YES
The test was okay.Possible cause and remedy
­
If the case of stored faults which high fault frequency counter or in the case of customer complaints, inspect electric cables and
connections for loose contact and corrosion.2010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
End of test
NO
The test was not okay.Possible cause and remedy
­ Check power supply of component B4/15 (Fuel pressure sensor).
End of test
1.2. Check power supply of component B4/15 (Fuel pressure sensor).
Test prerequisite
­ The actual value is not o.k.
Test sequence
­ Switch on ignition.
­ Unplug connector of pressure sensor B4/15 (Fuel pressure sensor).
­ Measure direct voltage with multimeter between sockets (B4/15) 1 and (B4/15) 3
Specified values
­ Voltage [4.8 ... 5.3] V
Question
­
Is the measurement value OK?
YES
The measurement value is OK.Further possible causes of fault
­ Test signal cable of component B4/15 (Fuel pressure sensor) for Short circuit or open circuit.
­ Inspect plug connections for corrosion, pinched insulation and loose contact.
­ B4/15 (Fuel pressure sensor)
End of test
NO
The measurement value is not OK.Possible cause and remedy
­ Check lines to component B4/15 (Fuel pressure sensor) for discontinuity or short circuit to ground.
­ Inspect plug connections for corrosion, pinched insulation and loose contact.
End of test