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DTC P0192 [MZR-CD (RF Turbo)]

BME010200100W36

DTC P0192 | Fuel pressure sensor circuit low input
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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

Diagnostic procedure

STEP | INSPECTION | ACTION
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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.
5 | INSPECT FUEL PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO GND • Turn engine switch to OFF. • Inspect continuity between fuel pressure sensor terminal B and body GND. • Is there continuity? | Yes | Repair or replace harness for short to GND, go to Step 9.
No | Go to next step.
6 | INSPECT FUEL PRESSURE SENSOR CIRCUIT FOR SHORT WITH EACH OTHER • Turn engine switch to OFF. • Inspect continuity between fuel pressure sensor terminals B and A. • Is there continuity? | Yes | Repair or replace harness for short with each other, go to Step 9.
No | Go to next step.
7 | INSPECT FUEL TEMPERATURE SENSOR • Inspect fuel temperature sensor. (See FUEL PRESSURE SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Repair supply pump, go to Step 9. (See SUPPLY PUMP INSPECTION [MZR-CD (RF Turbo)].)
No | Go to next step.
8 | INSPECT POOR CONNECTION OF PCM 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 next step.
No | Go to next step.
9 | VERIFY TROUBLESHOOTING OF DTC P0192 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from PCM memory using WDS or equivalent. • Start engine. • Is same DTC present? | Yes | Replace PCM, go to next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Is there any DTC present? | Yes | Go to applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.