DTC P243C:00 [PCM (SKYACTIV-D 2.2)]

id0102j5585900

DTC P243C:00

diesel particulate filter system: Abnormal diesel particulate filter regeneration interval short distance

DETECTION CONDITION

•  The following condition is met 3 times

―  Drive distance from previous diesel particulate filter regeneration to next diesel particulate filter regeneration is 50 km or less

―  PM target accumulation amount is high relative to actual PM regeneration amount

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

•  Soot generation amount is high due to abnormal engine combustion

•  Exhaust gas pressure sensor No.2 malfunction

•  Difference in pressure between before and after passing diesel particulate filter is high

•  Soot cannot be removed by diesel particulate filter regeneration

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC P243C:00	diesel particulate filter system: Abnormal diesel particulate filter regeneration interval short distance
DETECTION CONDITION	• The following condition is met 3 times ― Drive distance from previous diesel particulate filter regeneration to next diesel particulate filter regeneration is 50 km or less ― PM target accumulation amount is high relative to actual PM regeneration amount Diagnostic support note • This is a continuous monitor (CCM). • The check engine light does not illuminate. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	• Soot generation amount is high due to abnormal engine combustion • Exhaust gas pressure sensor No.2 malfunction • Difference in pressure between before and after passing diesel particulate filter is high • Soot cannot be removed by diesel particulate filter regeneration • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION

Note

•  Recording can be facilitated using the screen capture function of the PC.

•  Record the freeze frame data/snap shot data.

—

Go to the next step.

2

VERIFY OTHER RELATED DTCs

•  Switch the ignition OFF, and then switch it ON (engine off).

•  Display the DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

•  Has any DTC other than P243C:00 been stored?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)

No

Go to the next step.

3

VERIFY PM ACCUMULATION AMOUNT IN diesel particulate filter

•  Display the following PIDs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

―  PM_ACC_DSD

―  PM_GEN

•  Start the engine and race it at 3,000 rpm until the PM_ACC_DSD monitored value stabilizes.

•  Is the PM_ACC_DSD monitored value twice that of the PM_GEN monitored value or more?

Yes

Go to the next step.

No

Go to Step 5.

4

INSPECT EXHAUST GAS PRESSURE SENSOR NO.2

•  Inspect exhaust gas pressure sensor No.2.
(See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 2.2].)

•  Is exhaust gas pressure sensor No.2 normal?

Yes

Go to the next step.

No

Replace exhaust gas pressure sensor No.2, then go to Step 11.

(See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

5

PERFORM COMPULSORY diesel particulate filter REGENERATION AND VERIFY PM ACCUMULATION AMOUNT

•  Perform compulsory diesel particulate filter regeneration.
(See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 2.2].)

•  Display the following PIDs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

―  PM_ACC_DSD

•  Has PM_ACC_DSD lowered to near 0 after compulsory diesel particulate filter regeneration?

Yes

Go to the next step.

No

If compulsory diesel particulate filter regeneration is completed, replace the catalytic converter, then go to Step 11.

(See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

6

PERFORM FUEL INJECTION AMOUNT LEARNING

•  Perform the fuel injection amount learning.
(See FUEL INJECTOR INJECTION AMOUNT CORRECTION [SKYACTIV-D 2.2].)

•  Is the fuel injection amount learning completed?

Yes

Go to the next step.

No

Verify that the implementation conditions for fuel injection amount learning are met, and re-implement the fuel injection amount learning.

•  Fuel injection amount learning is completed:

―  Go to Step 8.

•  Fuel injection amount learning cannot be implemented:

―  Go to the next step.

7

VERIFY IF POOR FUEL INJECTION PRESSURE IS POSSIBLE CAUSE

•  Inspect the supply pump and verify the fuel supply line for clogging.
(See SUPPLY PUMP REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

•  Is the fuel supply line normal?

Yes

Replace the fuel injector, then go to Step 11.

(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

No

Repair or replace the malfunctioning location, then go to Step 11.

8

VERIFY IF EGR VALVE MALFUNCTION IS AFFECTED

•  Display the following PIDs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

―  EGRP

―  EGRP_ACT

•  Start the engine, race it at 3,000 rpm, and idle it.

•  Does the EGRP monitored value conform to the EGRP_ACT monitored value?

Yes

Go to the next step.

No

Inspect the EGR valve.

(See EGR VALVE INSPECTION [SKYACTIV-D 2.2].)

•  If the malfunction recurs

―  Replace the EGR valve, then go to Step 11.
(See EGR VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

•  If there is no malfunction

―  Go to the next step.

9

VERIFY IF INTAKE SHUTTER VALVE MALFUNCTION IS AFFECTED

•  Display the following PIDs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

―  ISV_POS

―  ISV_DSD

•  Start the engine, race it at 3,000 rpm, and idle it.

•  Does the ISV_POS value conform to the ISV_DSD value?

Yes

Go to the next step.

No

Inspect the intake shutter valve.

(See INTAKE SHUTTER VALVE INSPECTION [SKYACTIV-D 2.2].)

•  If the malfunction recurs

―  Replace the intake shutter valve, then go to the Step 11.
(See INTAKE SHUTTER VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

•  If there is no malfunction

―  Go to the next step.

10

INSPECT TURBOCHARGER

•  Inspect the turbocharger.
(See TURBOCHARGER INSPECTION [SKYACTIV-D 2.2].)

•  Is the turbocharger normal?

Yes

Replace the fuel injector, then go to the next step.

(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

No

Repair or replace the malfunctioning location, then go to the next step.

11

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Reconnect all the disconnected connectors.

•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
(See CLEARING DTC [PCM (SKYACTIV-D 2.2)].)

•  Display the following PIDs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

―  PM_ACC_DSD

―  PM_GEN

•  Start the engine and race it at 3,000 rpm until the PM_ACC_DSD monitored value stabilizes.

•  Is the PM_ACC_DSD monitored value twice that of the PM_GEN monitored value or more?

Yes

Repeat the inspection from Step 2.

•  If the malfunction recurs, replace the fuel injector, then go to the next step.
(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

No

Go to the next step.

12

VERIFY OTHER DTCs

•  Has any other DTC or pending code been stored?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the freeze frame data/snap shot data.	—	Go to the next step.
2	VERIFY OTHER RELATED DTCs • Switch the ignition OFF, and then switch it ON (engine off). • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) • Has any DTC other than P243C:00 been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
2		No	Go to the next step.
3	VERIFY PM ACCUMULATION AMOUNT IN diesel particulate filter • Display the following PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) ― PM_ACC_DSD ― PM_GEN • Start the engine and race it at 3,000 rpm until the PM_ACC_DSD monitored value stabilizes. • Is the PM_ACC_DSD monitored value twice that of the PM_GEN monitored value or more?	Yes	Go to the next step.
3		No	Go to Step 5.
4	INSPECT EXHAUST GAS PRESSURE SENSOR NO.2 • Inspect exhaust gas pressure sensor No.2. (See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is exhaust gas pressure sensor No.2 normal?	Yes	Go to the next step.
4		No	Replace exhaust gas pressure sensor No.2, then go to Step 11. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
5	PERFORM COMPULSORY diesel particulate filter REGENERATION AND VERIFY PM ACCUMULATION AMOUNT • Perform compulsory diesel particulate filter regeneration. (See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 2.2].) • Display the following PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) ― PM_ACC_DSD • Has PM_ACC_DSD lowered to near 0 after compulsory diesel particulate filter regeneration?	Yes	Go to the next step.
5		No	If compulsory diesel particulate filter regeneration is completed, replace the catalytic converter, then go to Step 11. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
6	PERFORM FUEL INJECTION AMOUNT LEARNING • Perform the fuel injection amount learning. (See FUEL INJECTOR INJECTION AMOUNT CORRECTION [SKYACTIV-D 2.2].) • Is the fuel injection amount learning completed?	Yes	Go to the next step.
6		No	Verify that the implementation conditions for fuel injection amount learning are met, and re-implement the fuel injection amount learning. • Fuel injection amount learning is completed: ― Go to Step 8. • Fuel injection amount learning cannot be implemented: ― Go to the next step.
7	VERIFY IF POOR FUEL INJECTION PRESSURE IS POSSIBLE CAUSE • Inspect the supply pump and verify the fuel supply line for clogging. (See SUPPLY PUMP REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) • Is the fuel supply line normal?	Yes	Replace the fuel injector, then go to Step 11. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
7		No	Repair or replace the malfunctioning location, then go to Step 11.
8	VERIFY IF EGR VALVE MALFUNCTION IS AFFECTED • Display the following PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) ― EGRP ― EGRP_ACT • Start the engine, race it at 3,000 rpm, and idle it. • Does the EGRP monitored value conform to the EGRP_ACT monitored value?	Yes	Go to the next step.
8		No	Inspect the EGR valve. (See EGR VALVE INSPECTION [SKYACTIV-D 2.2].) • If the malfunction recurs ― Replace the EGR valve, then go to Step 11. (See EGR VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) • If there is no malfunction ― Go to the next step.
9	VERIFY IF INTAKE SHUTTER VALVE MALFUNCTION IS AFFECTED • Display the following PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) ― ISV_POS ― ISV_DSD • Start the engine, race it at 3,000 rpm, and idle it. • Does the ISV_POS value conform to the ISV_DSD value?	Yes	Go to the next step.
9		No	Inspect the intake shutter valve. (See INTAKE SHUTTER VALVE INSPECTION [SKYACTIV-D 2.2].) • If the malfunction recurs ― Replace the intake shutter valve, then go to the Step 11. (See INTAKE SHUTTER VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) • If there is no malfunction ― Go to the next step.
10	INSPECT TURBOCHARGER • Inspect the turbocharger. (See TURBOCHARGER INSPECTION [SKYACTIV-D 2.2].) • Is the turbocharger normal?	Yes	Replace the fuel injector, then go to the next step. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
10		No	Repair or replace the malfunctioning location, then go to the next step.
11	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)].) • Display the following PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) ― PM_ACC_DSD ― PM_GEN • Start the engine and race it at 3,000 rpm until the PM_ACC_DSD monitored value stabilizes. • Is the PM_ACC_DSD monitored value twice that of the PM_GEN monitored value or more?	Yes	Repeat the inspection from Step 2. • If the malfunction recurs, replace the fuel injector, then go to the next step. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
11		No	Go to the next step.
12	VERIFY OTHER DTCs • Has any other DTC or pending code been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
12		No	DTC troubleshooting completed.