DTC P0192 [MZR-CD (RF Turbo)]

id0102f1805400

DTC P0192

Fuel pressure sensor circuit low input
DETECTION CONDITION
•  The PCM monitors the input voltage from the fuel pressure sensor while the engine is running. If the input voltage from the fuel pressure sensor is less than 0.69 V, the PCM determines there is a malfunction in the fuel pressure sensor circuit.
Diagnostic support note
•  The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
•  FREEZE FRAME DATA is available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  Fuel pressure sensor malfunction
•  Connector or terminal malfunction
•  Short to ground in wiring harness between fuel pressure sensor terminal C and PCM terminal 44
•  Open circuit in wiring harness between fuel pressure sensor terminal C and PCM terminal 44
•  Short to ground in wiring harness between fuel pressure sensor terminal B and PCM terminal 48
•  Fuel pressure sensor signal and ground circuits are shorted each other.
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT?
•  Connect the M-MDS to the DLC-2.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Is the same DTC present?
Yes
Go to the next step.
No
Intermittent concern exists.
Perform the “INTERMITTENT CONCERN TROUBLESHOOTING”.
(See INTERMITTENT CONCERN TROUBLESHOOTING [MZR-CD (RF Turbo)].)
4
INSPECT FUEL PRESSURE SENSOR CONNECTOR FOR POOR CONNECTION
•  Turn the engine switch off.
•  Inspect for poor connection (such as damaged/pulled-out terminals, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the suspected terminal, go to Step 11.
No
Go to the next step.
5
INSPECT FUEL PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND
•  Turn the engine switch off.
•  Inspect for continuity between the following terminals and body ground:
―  Fuel pressure sensor terminal C
―  Fuel pressure sensor terminal B
•  Is there continuity?
Yes
Repair or replace the wiring harness for a short to ground, go to Step 11.
No
Go to the next step.
6
INSPECT FUEL PRESSURE SENSOR POWER CIRCUIT FOR OPEN CIRCUIT
•  Turn the engine switch to the ON position. (Engine off)
•  Inspect the voltage at fuel pressure sensor terminal C (wiring harness side).
•  Is the voltage less than 0.69 V?
Yes
Repair or replace the wiring harness for an open circuit, go to Step 11.
No
Go to the next step.
7
INSPECT FUEL PRESSURE SENSOR CIRCUIT FOR SHORT
•  Turn the engine switch off.
•  Inspect for continuity between fuel pressure sensor terminals B and A.
•  Is there continuity?
Yes
Repair or replace wiring harness for a short, go to Step 11.
No
Go to the next step.
8
INSPECT FUEL TEMPERATURE SENSOR
•  Inspect the fuel temperature sensor.
•  Is there any malfunction?
Yes
Repair the supply pump, go to Step 11.
(See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No
Go to the next step.
9
INSPECT PCM CONNECTOR FOR POOR CONNECTION
•  Turn the engine switch off.
•  Inspect for poor connection (such as damaged/pulled-out terminals, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the suspected terminal, go to Step 11.
No
Go to the next step.
10
INSPECT FUEL PRESSURE SENSOR CIRCUIT FOR OPEN
•  Turn the engine switch off.
•  Inspect for continuity between fuel pressure sensor terminal B and PCM terminal 48.
•  Is there continuity?
Yes
Repair or replace suspected terminal, go to the next step.
No
Go to the next step.
11
VERIFY TROUBLESHOOTING OF DTC P0192 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Is the same DTC present?
Yes
Replace the PCM, go to the next step.
(See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No
Go to the next step.
12
VERIFY AFTER REPAIR PROCEDURE
•  Perform the Repair Verification Drive Mode.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD (RF Turbo)].)
No
Troubleshooting completed.