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DTC P239E:00 [PCM (SKYACTIV-D)]

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Note

•  To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

Description	NOx sensor (oxygen concentration) system: performance problem
Detection condition	Determination conditions	•  The oxygen concentration detected by NOx sensor is higher than the calculation value for a continuous 2 s.
	Preconditions	•  Intake air amount in each cylinder: 300.3—1,501.5 mg/stroke •  Engine speed: 900—4,000 rpm •  Fuel injection amount: -0.4—0.4 mg/stroke •  Battery voltage: 10.9—16 V •  Signals from NOx sensor normally received •  During engine running •  Diesel particulate filter regeneration control is not operating for a continuous 2 min •  DENOx control is not operating •  DESOx control is not operating •  HP-EGR control valve duty value: 2.5 % or less •  LP-EGR control valve duty value: 2.4 % or less •  Ambient air temperature: -10.04—49.96 °C {13.93—121.9 °F} •  Ambient pressure: 72.2 kPa {0.736 kgf/cm2, 10.5 psi} or more •  Diagnosis P239E:00 is not complete in this driving cycle. •  The following DTCs are not detected: ―  IAT sensor No.2: P0096:00, P0097:00, P0098:00 ―  MAF sensor: P0101:00, P0102:00, P0103:00 ―  MAP sensor: P0106:00, P0107:00, P0108:00 ―  IAT sensor No.1: P0111:00, P0112:00, P0113:00 ―  ECT sensor: P0116:00, P0117:00, P0118:00 ―  Intake shutter valve position sensor: P0122:00, P0123:00 ―  HP-EGR control valve position sensor: P0405:00, P0406:00 ―  LP-EGR control valve position sensor: P0407:00, P0408:00 ―  Exhaust gas pressure sensor No.1: P0471:00, P0472:00, P0473:00 ―  Exhaust shutter valve position sensor: P048D:00, P048E:00 ―  VSS circuit problem: P0500:00 ―  Exhaust gas temperature sensor No.1: P0545:00, P0546:00, P2080:00 ―  IAT sensor No.3: P1147:00 ―  BARO sensor: P2227:00, P2228:00, P2229:00 ―  NOx sensor: P06EA:00, P2204:00 ―  CAN system communication error: U029D:00
	Drive cycle	•  2
	Self test type	•  CMDTC self test
	Sensor used	•  NOx sensor •  PCM
Fail-safe	•  Inhibits the DENOx/DESOx control.
Vehicle status when dtcs are output	•  Not applicable.
Possible cause	•  NOx sensor malfunction ―  NOx sensor connector or terminals malfunction ―  NOx sensor deterioration ―  Malfunction in heater built into NOx sensor ―  NOx sensor clogging •  PCM connector or terminals malfunction •  PCM malfunction

System Wiring Diagram

Function Explanation (DTC Detection Outline)

Repeatability Verification Procedure

PID Item/Simulation Item Used In Diagnosis

Function Inspection Using M-MDS

Step	Inspection	Results	Action
1	PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY •  Verify related Service Bulletins, on-line repair information, or Service Information availability. •  Is any related Information available?	Yes	Perform repair or diagnosis according to the available information. •  If the vehicle is not repaired, go to the next step.
		No	Go to the next step.
2	PURPOSE: INSPECT FOR OTHER RELATED DTCs •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Are any of the following DTCs displayed? ―  P220A:00 ―  U029D:00	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC P220A:00 [PCM (SKYACTIV-D)].) (See DTC U029D:00 [PCM (SKYACTIV-D)].)
		No	Go to the next step.
3	PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION •  Record the freeze frame data/snapshot data. Note •  Recording can be facilitated using the screen capture function of the PC.	—	Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.

Troubleshooting Diagnostic Procedure

―  Perform a unit inspection of the NOx sensor.

―  Verify that the primary malfunction is resolved and there are no other malfunctions.

Step	Inspection	Results	Action
1	PURPOSE: INSPECT NOx SENSOR CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
2	PURPOSE: INSPECT NOx SENSOR FOR MALFUNCTION •  Inspect the applicable part. (See NOx SENSOR INSPECTION [SKYACTIV-D 1.8].) •  Is the part normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
Repair completion verification 1	PURPOSE: VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Replicate the vehicle conditions at the time the DTC was detected using the following procedure. ―  Implement the repeatability verification procedure. (See Repeatability Verification Procedure) •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
		No	Go to the next step.
Repair completion verification 2	PURPOSE: VERIFY IF OTHER DTCs DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.