DTC P2002:00 [MZR-CD 2.2]
id0102f3150200
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DTC P2002:00 |
Diesel particulate filter efficiency less than threshold |
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DETECTION CONDITION
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• The PCM monitors the exhaust pressure before and after the diesel particulate filter, using the exhaust gas pressure sensor. If the pressure difference is less than calibrated value for specified period, the PCM determines that the diesel particulate filter efficiency is less than the threshold.
MONITORING CONDITIONS
Diagnostic support note
• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
• The DTC is stored in the PCM memory.
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POSSIBLE CAUSE
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• Exhaust gas leakage form exhaust system
• Exhaust gas pressure sensor piping restriction, damaged and/or improper connection
• Exhaust gas pressure sensor malfunction
• Exhaust gas temperature sensor malfunction
• Damage or deformed in oxidation catalytic converter and/or diesel particulate filter
• PCM malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2)
• Perform the Freeze Frame PID Data Access Procedure.
• Is the DTC P2002:00 on FREEZE FRAME DATA (Mode 2)?
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Yes
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Go to the next step.
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No
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Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA (Mode 2).
(See DTC TABLE [MZR-CD 2.2].)
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2
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VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
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3
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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4
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INSPECT EXHAUST GAS LEAKAGE
• Inspect the exhaust system for leakage.
• Is there any leakage found around diesel particulate filter and exhaust gas pressure sensor?
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Yes
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Repair or replace the malfunctioning part according to the inspection results, then go to Step 9.
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No
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Go to the next step.
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5
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INSPECT EXHAUST GAS PRESSURE SENSOR PIPING
• Inspect for connection and condition at exhaust gas pressure sensor side piping.
• Is there any clacked damaged and/or misconnection found?
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Yes
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Repair or replace the malfunctioning part according to the inspection results, then go to Step 9.
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No
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Go to the next step.
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6
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INSPECT EXHAUST GAS PRESSURE SENSOR
• Inspect the exhaust gas pressure sensor.
• Is there any malfunction?
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Yes
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Replace the exhaust gas pressure sensor, then go to Step 9.
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No
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Go to the next step.
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7
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INSPECT EXHAUST GAS TEMPERATURE SENSOR
• Inspect the exhaust gas temperature sensor.
• Is there any malfunction?
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Yes
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Replace the exhaust gas temperature sensor, then go to Step 9.
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No
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Go to the next step.
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8
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INSPECT FOR RESTRICTION, MELT OR CLOGGED IN DIESEL PARTICULATE FILTER OR OXIDATION CATALYTIC CONVERTER
• Remove the catalytic converter.
• Visually inspect the diesel particulate filter and catalytic converter.
• Are the following conditions detected?
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Yes
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Replace the catalytic converter, then go to the next step.
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No
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Go to the next step.
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9
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VERIFY DTC TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine.
• Perform the DTC Reading Procedure.
• Is the same DTC present?
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Yes
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Replace the PCM, then go to the next step.
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No
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Go to the next step.
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10
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VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD 2.2].)
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No
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DTC troubleshooting completed.
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