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DTC P244A:00 [PCM (SKYACTIV-D)]

id0102t5058900

Outline

System malfunction location

Exhaust gas pressure sensor No.2: Function error

Detection condition

•  When all of the following conditions are met, a difference in the pressure before and after passing the diesel particulate filter of less than the specification is detected continuously for 7 s.

―  Battery positive voltage: 8—16 V

―  0.5 s have elapsed after ignition is switched ON (engine on)

―  The following conditions continue for 3 s

•  Engine speed: 825 rpm or more

•  Exhaust gas amount: 2.5 m³/min or more

•  Exhaust gas fluctuation amount: 0.121 m³/min or less within 0.016 s

•  Exhaust gas temperature detected by exhaust gas temperature sensors No.2 and No.3: 500 °C {932 °F} or less

•  Estimated value of post-diesel particulate filter exhaust gas temperature: 500 °C {932 °F} or less

•  PM accumulated amount: 1.5 g/l or more

―  The following DTCs are not detected

•  MAF sensor: P0102:00, P0103:00

•  MAP sensor: P0107:00, P0108:00

•  CKP sensor: P0336:00, P0337:00

•  HP-EGR control valve position sensor: P0405:00, P0406:00

•  Exhaust gas temperature sensor No.1: P0545:00, P0546:00

•  Exhaust gas temperature sensor No.3: P161F:00, P16B3:00, P242C:00, P242D:00

•  IAT sensor No.3: P1118:00, P1119:00

•  Exhaust gas pressure sensor No.1: P0472:00, P0473:00

•  Exhaust gas pressure sensor No.2: P2454:00, P2455:00

•  Constant voltage power supply control system: P0652:00, P0653:00

•  Exhaust gas temperature sensor No.2: P2033:00

•  BARO sensor: P2228:00, P2229:00

Fail-safe

•  PCM restricts engine torque.

•  Limits the maximum engine speed.

•  Inhibits the DENOx/DESOx control.

•  Inhibits the diesel particulate filter regeneration control.

•  Inhibits the EGR control.

Possible cause

•  PCM input signal error

―  Exhaust gas pressure sensor No.2 signal

―  Input signal part connector or terminal malfunction

―  Input signal part-related wiring harness malfunction

•  Exhaust gas leakage from exhaust system

•  Pipe clogging, damage or erroneous piping between exhaust gas pressure sensor No.2 and catalytic converter (diesel particulate filter)

•  Exhaust gas pressure sensor No.2 malfunction

•  Catalytic converter (diesel particulate filter) or diesel particulate filter malfunction (deformation, damage)

•  PCM malfunction

System wiring diagram

•  Not applicable

Connector diagram

•  Not applicable

System malfunction location	Exhaust gas pressure sensor No.2: Function error
Detection condition	• When all of the following conditions are met, a difference in the pressure before and after passing the diesel particulate filter of less than the specification is detected continuously for 7 s. ― Battery positive voltage: 8—16 V ― 0.5 s have elapsed after ignition is switched ON (engine on) ― The following conditions continue for 3 s • Engine speed: 825 rpm or more • Exhaust gas amount: 2.5 m³/min or more • Exhaust gas fluctuation amount: 0.121 m³/min or less within 0.016 s • Exhaust gas temperature detected by exhaust gas temperature sensors No.2 and No.3: 500 °C {932 °F} or less • Estimated value of post-diesel particulate filter exhaust gas temperature: 500 °C {932 °F} or less • PM accumulated amount: 1.5 g/l or more ― The following DTCs are not detected • MAF sensor: P0102:00, P0103:00 • MAP sensor: P0107:00, P0108:00 • CKP sensor: P0336:00, P0337:00 • HP-EGR control valve position sensor: P0405:00, P0406:00 • Exhaust gas temperature sensor No.1: P0545:00, P0546:00 • Exhaust gas temperature sensor No.3: P161F:00, P16B3:00, P242C:00, P242D:00 • IAT sensor No.3: P1118:00, P1119:00 • Exhaust gas pressure sensor No.1: P0472:00, P0473:00 • Exhaust gas pressure sensor No.2: P2454:00, P2455:00 • Constant voltage power supply control system: P0652:00, P0653:00 • Exhaust gas temperature sensor No.2: P2033:00 • BARO sensor: P2228:00, P2229:00
Fail-safe	• PCM restricts engine torque. • Limits the maximum engine speed. • Inhibits the DENOx/DESOx control. • Inhibits the diesel particulate filter regeneration control. • Inhibits the EGR control.
Possible cause	• PCM input signal error ― Exhaust gas pressure sensor No.2 signal ― Input signal part connector or terminal malfunction ― Input signal part-related wiring harness malfunction • Exhaust gas leakage from exhaust system • Pipe clogging, damage or erroneous piping between exhaust gas pressure sensor No.2 and catalytic converter (diesel particulate filter) • Exhaust gas pressure sensor No.2 malfunction • Catalytic converter (diesel particulate filter) or diesel particulate filter malfunction (deformation, damage) • PCM 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 FOR OTHER RELATED DTCs

•  Perform the DTC inspection for the PCM.
(See DTC INSPECTION.)

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [PCM (SKYACTIV-D)].)

No

Go to the next step.

4

VERIFY INPUT SIGNAL CONDITION

•  Start the engine.

•  Display the following PIDs using the M-MDS.
(See DTC INSPECTION.)

―  EX_GAS_DIF_PRES

•  Is the PID within the specification?

Yes

Go to the next step.

No

Inspect the related sensors and wiring harnesses.

•  Malfunction in the sensor or wiring harness:

―  Repair or replace the malfunctioning location and perform the repair completion verification.

•  No malfunction in the sensor, wiring harness:

―  Go to the next step.

5

INSPECT FOR EXHAUST GAS LEAKAGE FROM EXHAUST SYSTEM

•  Visually inspect for exhaust gas leakage from exhaust system.

•  Is the exhaust system normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location, then go to repair completion verification.

6

INSPECT EXHAUST GAS PRESSURE SENSOR No.2-RELATED PIPING

•  Visually inspect the exhaust gas pressure sensor No.2-related piping for damage, loss, or erroneous piping.
(See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 1.8].)

•  Is the exhaust gas pressure sensor No.2-related piping normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location, then go to repair completion verification.

7

INSPECT EXHAUST GAS PRESSURE SENSOR No.2 FOR MALFUNCTION

•  Inspect the applicable part.
(See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 1.8].)

•  Is the part normal?

Yes

Malfunction in the catalytic converter (diesel particulate filter) or the diesel particulate filter in the catalytic converter can be considered.

•  Replace the catalytic converter (diesel particulate filter), then go to the next step.
(See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See EXHAUST GAS PRESSURE 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 EXHPRESS_DIF using the M-MDS.
(See DTC INSPECTION.)

―  Start the engine.

―  Race the engine at 3,500 rpm or more for 1 min.

―  Verify that the EXHPRESS_DIF PID value is 0.2 kPa {0.002 kgf/cm², 0.03 psi} 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.

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.
2		No	Go to the next step.
3	INSPECT FOR OTHER RELATED DTCs • Perform the DTC inspection for the PCM. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D)].)
3		No	Go to the next step.
4	VERIFY INPUT SIGNAL CONDITION • Start the engine. • Display the following PIDs using the M-MDS. (See DTC INSPECTION.) ― EX_GAS_DIF_PRES • Is the PID within the specification?	Yes	Go to the next step.
4		No	Inspect the related sensors and wiring harnesses. • Malfunction in the sensor or wiring harness: ― Repair or replace the malfunctioning location and perform the repair completion verification. • No malfunction in the sensor, wiring harness: ― Go to the next step.
5	INSPECT FOR EXHAUST GAS LEAKAGE FROM EXHAUST SYSTEM • Visually inspect for exhaust gas leakage from exhaust system. • Is the exhaust system normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location, then go to repair completion verification.
6	INSPECT EXHAUST GAS PRESSURE SENSOR No.2-RELATED PIPING • Visually inspect the exhaust gas pressure sensor No.2-related piping for damage, loss, or erroneous piping. (See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 1.8].) • Is the exhaust gas pressure sensor No.2-related piping normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location, then go to repair completion verification.
7	INSPECT EXHAUST GAS PRESSURE SENSOR No.2 FOR MALFUNCTION • Inspect the applicable part. (See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 1.8].) • Is the part normal?	Yes	Malfunction in the catalytic converter (diesel particulate filter) or the diesel particulate filter in the catalytic converter can be considered. • Replace the catalytic converter (diesel particulate filter), then go to the next step. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
7		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See EXHAUST GAS PRESSURE 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 EXHPRESS_DIF using the M-MDS. (See DTC INSPECTION.) ― Start the engine. ― Race the engine at 3,500 rpm or more for 1 min. ― Verify that the EXHPRESS_DIF PID value is 0.2 kPa {0.002 kgf/cm², 0.03 psi} 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].)
Repair completion verification 1		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.
Repair completion verification 2		No	DTC troubleshooting completed.