DTC P2002:00 [MZ-CD 1.6 (Y6) (EURO5 emission level)]
id0102g7150200
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DTC P2002:00 |
Diesel particulate filter efficiency below 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 diesel particulate filter differential pressure sensor. If the differential pressure at the front and rear of the diesel particulate filter is less than the threshold which is determined based on the exhaust gas flow and particulate accumulated in the diesel particulate filter for 5 s, the PCM determines that there is a malfunction in the diesel particulate filter.
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POSSIBLE CAUSE
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• Diesel particulate filter differential learning reset procedure is not performed properly
• Particulate filter differential pressure sensor malfunction
• Loose or poor installation particular filter differential pressure sensor piping
• Exhaust gas leakage in exhaust system
• Diesel particulate filter restriction and/or damaged
• PCM malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has the FREEZE FRAME 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 on the repair order, then go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to the available repair 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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3
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VERIFY RELATED PENDING CODE AND/OR DTC
• Switch the ignition to off, then to ON (engine off).
• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
• Is the other PENDING CODE/DTC also present?
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Yes
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Go to the applicable DTC inspection.
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No
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Go to the next step.
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4
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PERFORM DIESEL PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR LEARNED RESET
• Clear the DTC from the PCM memory using the M-MDS.
• Perform the DIESEL PARTICULATE FILTER LEARNED VALUE RESET.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
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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 Step 9.
(DIESEL PARTICULATE FILTER LEARNED VALUE RESET procedure is not performed properly.)
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5
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INSPECT PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR PIPING
• Inspect for connection and condition at particular filter differential pressure sensor side piping.
• Is there any clacked and/or damaged found?
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Yes
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Repair or replace for malfunctioning part, then go to Step 8.
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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 LEAKAGE
• Inspect the exhaust system for leakage.
• Is there any leakage found around diesel particulate filter and exhaust manifold?
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Yes
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Repair or replace malfunctioning part, then go to Step 8.
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No
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Go to the next step.
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7
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VISUALLY INSPECT DIESEL PARTICULATE FILTER FOR RESTRICT AND DAMAGE
• Cool down the engine.
• Remove the catalytic converter.
• Visually inspect the diesel particulate filter.
• Is there any restrict or damage?
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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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8
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VERIFY THAT DTC P2002:00 TROUBLESHOOTING IS COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the PCM.
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 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.
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No
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DTC troubleshooting completed.
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