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DTC P0088 [MZR-CD (RF Turbo)]

BME010200001W06

DTC P0088 | Fuel pressure system too high
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DETECTION CONDITION | • PCM monitors fuel pressure in common rail from fuel pressure sensor while engine running. If fuel pressure is higher than preprogrammed criteria, PCM determines fuel pressure system too high.
POSSIBLE CAUSE | • Suction control valve malfunction • Fuel pressure sensor malfunction • Fuel pressure limiter malfunction • 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 | FOLLOW OTHER DETECTED DTC FIRST • Turn engine switch to OFF. • Start engine. • Have P0091, P0092, P0191, P0192, P0193 been detected? | Yes | Go to applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Go to next step.
3 | INSPECT SUCTION CONTROL VALVE • Inspect suction control valve. (See SUCTION CONTROL VALVE INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Repair supply pump, go to Step 6. (See SUPPLY PUMP INSPECTION [MZR-CD (RF Turbo)].)
No | Go to next step.
4 | INSPECT FUEL PRESSURE SENSOR • Inspect fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace common rail, go to Step 6. (See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to next step.
5 | INSPECT COMMON RAIL • Inspect common rail. (See COMMON RAIL INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace common rail, go to next step. (See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to next step.
6 | VERIFY TROUBLESHOOTING OF DTC P0088 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.
7 | 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.