Dtc P0088 - Mazda 6 Workshop Manual

STEP
11 VERIFY AFTER REPAIR PROCEDURE
• Perform the Repair Verification Drive Mode.
(See F2–39 OBD DRIVE
• Is any DTCs present?
End Of Sie

DTC P0088

DTC P0088 Fuel pressure system too high
• The PCM monitors the fuel pressure in the common rail from the fuel pressure sensor while the engine
DETECTION
running. If the fuel pressure is more than 188 MPa {1,917 kgf/cm
CONDITION
the fuel pressure is too high.
• Suction control valve malfunction
• Fuel pressure sensor malfunction
POSSIBLE
• Fuel pressure limiter malfunction
CAUSE
• PCM malfunction
Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME DATA been recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related service information availability.
• Is any related repair information available?
3 VERIFY CURRENT SIGNAL STATUS: IS
CONCERN INTERMITTENT OR CONSTANT?
• Connect the WDS or equivalent to the DLC-2.
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
4 IDENTIFY TRIGGER DTC FOR FREEZE FRAME
DATA
• Is P0627, P0628, P0629, P0191, P0192 or
P0193 on FREEZE FRAME DATA?
5 INSPECT SUCTION CONTROL VALVE
• Inspect the suction control valve.
• Is there any malfunction?
6 INSPECT FUEL PRESSURE SENSOR
• Inspect the fuel pressure sensor.
• Is there any malfunction?
7 INSPECT COMMON RAIL
• Inspect the common rail.
• Is there any malfunction?
8 VERIFY TROUBLESHOOTING OF DTC P0088
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
9 VERIFY AFTER REPAIR PROCEDURE
• Perform the Repair Verification Drive Mode.
(See F2–39 OBD DRIVE
• Are any DTCs present?
End Of Sie
F2–46
ON-BOARD DIAGNOSTIC
INSPECTION
MODE.)
INSPECTION
MODE.)
Yes Go to the applicable DTC inspection.
(See F2–40 DTC TABLE.)
No DTC troubleshooting completed.
2
, 27,267 psi}, the PCM determines that
Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order,
then go to the next step.
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.
Yes Go to the next step.
No Intermittent concern exists.
Perform the "INTERMITTENT CONCERNS
TROUBLESHOOTING".
Yes Go to the applicable DTC inspection.
(See F2–40 DTC TABLE)
No Go to the next step.
Yes Repair the supply pump, go to Step 8.
No Go to the next step.
Yes Replace the common rail, go to Step 8.
No Go to the next step.
Yes Replace the common rail, go to the next step.
No Go to the next step.
Yes Replace the PCM, go to the next step.
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See F2–40 DTC TABLE)
No Troubleshooting completed.
ACTION
B6E407000001103
ACTION