| Mazda P2453 | Diesel particulate filter differential pressure sensor range/performance problem |
|---|---|
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DETECTION CONDITION
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• The PCM monitors the input voltage from the diesel particulate filter differential pressure sensor signal. If the voltages at PCM terminal 207, 246 and 119 deviates from the threshold, the PCM determines that the there is a diesel particulate filter differential pressure sensor range/performance malfunction.
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POSSIBLE CAUSE
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• Diesel particulate filter differential pressure sensor malfunction
• Connector or terminal malfunction
• PCM malfunction
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Diagnostic procedure
| 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 CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT?
• Connect the M-MDS to the DLC-2.
• 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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Go to the next step.
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No
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Intermittent concern exists.
Perform the “INTERMITTENT CONCERNS TROUBLESHOOTING”.
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4
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INSPECT DIESEL PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR
• Inspect the diesel particulate filter differential pressure sensor.
• Is there any malfunction?
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Yes
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Replace the diesel particulate filter differential pressure sensor, then go to the next step.
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No
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Go to the next step.
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5
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VERIFY THAT DTC P2453 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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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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6
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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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