DTC P1209 [MZ-CD 1.6 (Y6)]

B3E010201200W09

DTC P1209

Fuel pressure peak delta test error

DETECTION CONDITION

• Fuel empty strategy, attempting to satisfy rail demand (maximum)

POSSIBLE CAUSE

• Fuel pump malfunction
• 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 repair information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair 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 WDS or equivalent to the DLC-2.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
Yes
Go to the next step.
No
Intermittent concern exists.
Perform the "INTERMITTENT CONCERNS TROUBLESHOOTING".
4
INSPECT FUEL PUMP
• Inspect the fuel pump
• Is there any malfunction?
Yes
Replace the fuel pump, then go to the next step.
No
Go to the next step.
5
VERIFY TROUBLESHOOTING OF DTC P1209 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
6
VERIFY AFTER REPAIR PROCEDURE
• Perform the after repair procedure.
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.