DTC P041D:00 [PCM (SKYACTIV-D)]

Description	EGR temperature sensor circuit high input
Detection conditions	Determination condition	• The EGR temperature sensor output voltage is higher than 4.67 V for a continuous 5 s.
	Preconditions	• All of the following conditions are met. ― Battery positive voltage: 8—16 V ― 0.5 s have elapsed after ignition is switched ON (engine off or on)
	Drive cycle	• 2
	Self-test type	• CMDTC self test
	Sensor/unit used	• EGR temperature sensor
fail-safe	• Not applicable
Vehicle status when dtcs are output	• Not applicable
Possible cause	• EGR temperature sensor connector or terminal malfunction • PCM connector or terminal malfunction • Short to power supply in EGR temperature sensor signal circuit • Open circuit in any of the following EGR temperature sensor circuits. ― Signal circuit ― Ground circuit • Short circuit in EGR temperature sensor signal circuit and ground circuit • EGR temperature sensor malfunction • PCM malfunction

• If the following condition is detected, the PCM determines that there is a short to power supply or an open circuit between the EGR temperature sensor terminal and the PCM terminal, and stores a DTC.

1. Leave the vehicle for 10 s with the ignition switched ON (engine off) or while idling.

Item (definition)	Reference
EGRT	• (See PID/DATA MONITOR TABLE [PCM (SKYACTIV-D)].)

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.
1		No	Go to the next step.
2	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.
3	PURPOSE: VERIFY RELATED SENSOR INPUT SIGNAL • Start the engine and warm it up. • Display the following PIDs using the M-MDS. (See DTC INSPECTION) ― EGRT • Are the monitoring values normal?	Yes	Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.
3		No	Go to the next step.
4	PURPOSE: INSPECT WIRING HARNESSES AND CONNECTORS FOR RELATED-SENSOR • Display the following PIDs using the M-MDS. (See DTC INSPECTION) ― EGRT • When the PCM and EGR gas temperature sensor connectors are shaken, does the PID value include a PID item which has changed?	Yes	Inspect the related wiring harnesses and connectors. • Repair or replace the malfunctioning location. Go to the troubleshooting procedure to perform the procedure from repair completion verification.
4		No	Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

• Repair completion verification

Step	Inspection	Results	Action
1	PURPOSE: VERIFY IF CONNECTOR DAMAGE OF EACH PART AFFECTS DIAGNOSTIC RESULTS • Switch the ignition OFF. • Disconnect the connectors of the following parts: ― EGR temperature sensor ― PCM • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
1		No	Repair or replace the malfunctioning location and perform the repair completion verification.
2	PURPOSE: INSPECT EGR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Inspect the applicable circuit for a short to power supply. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	PURPOSE: INSPECT EGR TEMPERATURE SENSOR GROUND CIRCUIT AND SIGNAL CIRCUIT FOR SHORT CIRCUIT • Inspect the applicable circuits for a short circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to repair completion verification.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	PURPOSE: INSPECT EGR TEMPERATURE SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR OPEN CIRCUIT • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	PURPOSE: 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.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See EGR TEMPERATURE 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].)
Repair completion verification 1		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.
Repair completion verification 2		No	DTC troubleshooting completed.

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