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DTC P041B:00 [PCM (SKYACTIV-D)]

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Outline

System malfunction location	EGR temperature Sensor correlation problem
Detection condition	•  With the following conditions met, the difference between the IAT sensor No.2 output value and the EGR temperature sensor output value is 150 °C {270 °F} or more, or the difference between the exhaust gas temperature sensor No.4 output value and the EGR temperature sensor output value is 150 °C {270 °F} or more for a continuous 0.128 s. ―  Before starting the engine, leave the vehicle with the engine turned off for 6 h or more. ―  Battery positive voltage: 10 V or more ―  0.5 s have elapsed after ignition is switched ON (engine on) ―  The following DTCs are not detected •  EGR temperature Sensor: P041C:00, P041D:00, P166F:00, P16B6:00 •  Exhaust gas temperature sensor No.4: P166D:00, P16B4:00 •  IAT sensor No.2: P0097:00, P0098:00 •  Malfunction in instrument cluster: P2610:00
Fail-safe	•  Not applicable
Possible cause	•  EGR temperature sensor connector or terminal malfunction •  PCM malfunction •  EGR temperature sensor malfunction •  Exhaust gas temperature sensor No.4 connector or terminal malfunction •  Exhaust gas temperature sensor No.4 malfunction •  IAT sensor No.2 connector or terminal malfunction •  IAT sensor No.2 malfunction •  PCM connector or terminal malfunction
System wiring diagram	•  Not applicable
Connector diagram	•  Not applicable

Diagnostic Procedure

Step	Inspection	Results	Action
1	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 the next step.
2	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.
3	INSPECT EGR TEMPERATURE 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.
4	INSPECT PCM 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.
5	INSPECT EGR TEMPERATURE SENSOR FOR MALFUNCTION •  Inspect the applicable part. (See EGR TEMPERATURE 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 EGR TEMPERATURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
6	INSPECT EXHAUST GAS TEMPERATURE SENSOR No.4 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.
7	INSPECT EXHAUST GAS TEMPERATURE SENSOR No.4 FOR MALFUNCTION •  Inspect the applicable part. (See EXHAUST GAS TEMPERATURE 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 EXHAUST GAS TEMPERATURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
8	INSPECT IAT SENSOR No.2 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.
9	INSPECT IAT SENSOR No.2 FOR MALFUNCTION •  Inspect the applicable part. (See INTAKE AIR TEMPERATURE (IAT) 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 INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
Repair completion verification 1	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. ―  Leave the vehicle for 6 h or more. ―  Switch the ignition ON (engine off) or leave for 1 min while idling. •  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	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.