ON-BOARD DIAGNOSTIC
F2–125
F2
DTC P0192
A6E407001082222
Diagnostic procedure
DTC P0192 Fuel pressure sensor circuit low input
DETECTION
CONDITION
• PCM monitors input voltage from fuel pressure sensor while engine is running. If input voltage from fuel
pressure sensor is below 0.4 V, PCM determines fuel pressure sensor circuit low input.
POSSIBLE
CAUSE
• Fuel pressure sensor malfunction
• Connector or terminal malfunction
• Short to GND in wiring between fuel pressure sensor terminal C and PCM terminal 90
• Open circuit in wiring between fuel pressure sensor terminal C and PCM terminal 90
• Short to GND in wiring between fuel pressure sensor terminal B and PCM terminal 61
• Fuel pressure sensor signal and GND circuits short each other
• PCM malfunction
STEP INSPECTION ACTION
1 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Information
availability.
• Is any related repair information available?
Yes Perform repair or diagnosis according to available Service
Information.
• If vehicle is not repaired, go to next step.
No Go to next step.
2 INSPECT POOR CONNECTION OF FUEL
PRESSURE SENSOR CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
Yes Repair or replace suspected terminal, go to Step 9.
No Go to next step.
3 INSPECT FUEL PRESSURE SENSOR SIGNAL
CIRCUIT FOR SHORT TO GND
• Turn engine switch to OFF.
• Inspect continuity between fuel pressure
sensor terminal C and body GND.
• Is there continuity?
Yes Repair or replace harness for short to GND, go to Step 9.
No Go to next step.
4 INSPECT FUEL PRESSURE SENSOR POWER
CIRCUIT FOR OPEN
• Turn engine switch to ON. (Engine OFF)
• Inspect voltage at fuel pressure sensor
terminal C (harness side).
• Is voltage below 1.0 V?
Yes Repair or replace harness for open, go to Step 9.
No Go to next step.
2
8
7
2
8
6
8
5
4
3
6
2
C
BA
C
B
A
90
61
91
PCM
FUEL PRESSURE SENSOR
91 90
61
FUEL PRESSURE SENSOR
HARNESS SIDE CONNECTOR
PCM
HARNESS SIDE CONNECTOR
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