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DTC P2471:00 [PCM (SKYACTIV-D)]

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Outline

System malfunction location	Exhaust gas temperature sensor No.4 circuit high input
Detection condition	•  If the PCM detects that the exhaust gas temperature sensor No.4 voltage at the PCM terminal 1DU is above 4.95 V for 6 s with the following condition met, the PCM determines that the exhaust gas temperature sensor No.4 circuit voltage is high. Preconditions ―  Battery voltage: 8 V or more ―  0.5 s have elapsed after ignition is switched ON (engine off or on) Note •  This DTC is established to record that the inducement warning has been activated with the remaining distance to empty at 402 km {250 miles} or less due to an inducement malfunction.
Fail-safe	•  Not applicable
Possible cause	•  Exhaust gas temperature sensor No.4 connector or terminals malfunction •  PCM connector or terminals malfunction •  Short to power supply in exhaust gas temperature sensor No.4 signal circuit •  Open circuit in any of the following exhaust gas temperature sensor No.4 circuits. ―  Signal circuit ―  Ground circuit •  Exhaust gas temperature sensor No.4 malfunction •  PCM malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION •  Record the 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 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.
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 EXHAUST GAS TEMPERATURE SENSOR No.4 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.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT EXHAUST GAS TEMPERATURE SENSOR No.4 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.
		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].)
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. ―  Display PID EXHTEMP4 using the M-MDS. (See DTC INSPECTION) ―  Start the engine. ―  Leave for 1 min while idling. ―  Verify that the EXHTEMP4 monitor value has reached -20 °C {-4 °F} or more. •  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.