DTC P2202:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)]
id0102k1725600
Details On DTCs
DTC P2202:00 |
NOx sensor No.1 (NOx oxygen concentration) circuit low input |
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DETECTION CONDITION
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Determination conditions
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• The NOx concentration output by NOx sensor No.1 is less than -100 ppm for a continuous 8.0 s.
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Preconditions
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• NOx sensor No.1 is activating
• Ignition has been switched ON (engine on) for 20 s or more
• Battery voltage: 10.9—16.0 V
• Ignition switched ON (engine off or on)
• The following DTCs are not detected:
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Drive cycle
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• 1
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Self test type
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• CMDTC self test
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Sensor used
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• NOx sensor No.1
• Dosing control unit
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FAIL-SAFE FUNCTION
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• Restricts the maximum remaining distance to empty.
• Limits the upper limit of the engine speed.
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VEHICLE STATUS WHEN DTCs ARE OUTPUT
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• DTC P2BAF:00 is also stored in the PCM and the vehicle speed is restricted.
• DTC P1640:00 is also stored in the PCM.
• P0615:00 may be stored if the remaining distance to empty is 0 km {0 mile} and the engine cannot be restarted.
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POSSIBLE CAUSE
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• NOx sensor No.1 connector or terminals malfunction
• Dosing control unit connector or terminals malfunction
• NOx sensor No.1 malfunction
• Dosing control unit malfunction
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Function Explanation (DTC Detection Outline)
Repeatability Verification Procedure
1. Perform the "COMPULSORY DIESEL PARTICULATE FILTER REGENERATION". (See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 2.2].)
2. Idle the engine for 3 min.
PID Item/Simulation Item Used In Diagnosis
PID/DATA monitor item table
Item |
Definition |
Unit |
Condition/Specification |
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NOX_C_B1S1
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NOx sensor No.1
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— (ppm)
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• Displays the exhaust gas NOx concentration before SCR converter
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Function Inspection Using M-MDS
STEP |
INSPECTION |
RESULTS |
ACTION |
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1
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PURPOSE: VERIFY RELATED REPAIR 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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2
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PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (NOx sensor No.1) on the repair order.
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—
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Go to the next step.
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3
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PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY OTHER RELATED DTCs OCCURRING
• Switch the ignition off, then ON (engine off).
• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
• Is the PENDING CODE/DTC P2200:00 or U029D:00 also present?
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Yes
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Go to the applicable DTC inspection.
Repair or replace the applicable wiring harness or connector parts.
Go to the troubleshooting procedure to perform the procedure from Step 2.
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No
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Go to the next step.
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4
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PURPOSE: VERIFY IF THERE IS PID ITEM CAUSING DRASTIC CHANGES OF ACCELERATION FLUCTUATION BY INPUT SIGNAL TO PCM OR DOSING CONTROL UNIT
• Access the following PIDs using the M-MDS:
• Is there any signal that is far out of specification?
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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 Troubleshooting Diagnostic Procedure to perform the procedure from step 1.
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5
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PURPOSE: VERIFY CONNECTOR CONNECTIONS
• Access the following PIDs using the M-MDS:
• When the following parts are shaken, does the PID value include a PID item which has changed?
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Yes
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Inspect the related wiring harness and connector.
• Repair or replace the malfunctioning part.
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No
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Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.
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Troubleshooting Diagnostic Procedure
STEP |
INSPECTION |
RESULTS |
ACTION |
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1
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PURPOSE: DETERMINE INTEGRITY OF NOx SENSOR No.1
• Inspect the NOx sensor No.1.
• Is there any malfunction?
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Yes
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Replace the NOx sensor No.1, then go to the next step.
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No
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Go to the next step.
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2
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VERIFY THAT ENGINE CAN BE STARTED
• Always reconnect all disconnected connectors.
• Clear the DTC from the dosing control unit memory using the M-MDS.
• Start the engine.
• Can the engine be started?
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Yes
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Go to the next step.
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No
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Perform the “SCR INDUCEMENT INSPECTION SERVICE FUNCTION” using the M-MDS.
Go to the next step.
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3
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IMPLEMENT THE REPEATABILITY VERIFICATION PROCEDURE
• Always reconnect all disconnected connectors.
• Implement the repeatability verification procedure.
• Has the restriction of the remaining distance to empty been canceled?
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Yes
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Go to the next step.
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No
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Repeat the inspection from Step 2.
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4
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VERIFY DTC TROUBLESHOOTING COMPLETED
• Retrieve the dosing control unit DTCs using the M-MDS.
• Is the same Pending 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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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the dosing control unit.
Go to the next step.
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5
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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