DTC P2105:00 [PCM (SKYACTIV-D)]

System malfunction location	Intake air shutter valve actuator control system malfunction (forced engine shutdown)
Detection condition	• After switching the ignition off, the PCM detects that the engine speed has not decreased for a specified time.
Fail-safe	• Not applicable
Possible cause	• Engine oil deterioration • Fuel injector malfunction • Internal engine part malfunction (burning or seizure, abnormal combustion) • PCM malfunction
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

System malfunction location

Intake air shutter valve actuator control system malfunction (forced engine shutdown)

Detection condition

• After switching the ignition off, the PCM detects that the engine speed has not decreased for a specified time.

Fail-safe

• Not applicable

Possible cause

• Engine oil deterioration

• Fuel injector malfunction

• Internal engine part malfunction (burning or seizure, abnormal combustion)

• PCM malfunction

System wiring diagram

• Not applicable

Connector diagram

• Not applicable

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 ENGINE OIL LEVEL • Verify the engine oil level. (See ENGINE OIL LEVEL INSPECTION [SKYACTIV-D 1.8].) • Is the engine oil amount above X line on the oil level gauge?	Yes	Go to the next step.
No	Replace or add engine oil, then go to Step 9. (See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)
5	INSPECT OIL PENETRATION TO ENGINE (COMBUSTION CHAMBER) FOR MALFUNCTION • Verify that there is no engine oil in the charge air cooler. • Remove the charge air cooler. (See WATER-COOLED CHARGE AIR COOLER REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) Note • Oil may penetrate into the charge air cooler due to the driving conditions or excessive oil refilling. • When tilting the charge air cooler, does engine oil drain from the charge air cooler.	Yes	Discharge the oil in the charge air cooler, then go to the next step.
No	Replace engine oil, then go to repair completion verification. (See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)
6	DETERMINE IF MALFUNCTION CAUSE IS ENGINE BURNING OR SEIZURE, OR ABNORMAL COMBUSTION • Remove the glow plug. (See GLOW PLUG REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) • Is the heat-generating area of the glow plug burnt out?	Yes	Go to the next step.
No	Replace engine oil, then go to repair completion verification. (See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)
7	INSPECT FUEL INJECTOR FOR MALFUNCTION • Inspect the applicable part. (See FUEL INJECTOR 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 FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
8	VISUALLY INSPECT CYLINDER HEAD • Remove the cylinder head and visually inspect the following: (See CYLINDER HEAD GASKET REPLACEMENT [SKYACTIV-D 1.8].) ― Dents caused by piston impact, or adhesion of melt from glow plug, fuel injector, or piston on cylinder head • Is there any damage or melt adhesion?	Yes	Go to the next step.
No	Go to Step 11.
9	VISUALLY INSPECT CYLINDER INTERNAL • Is there any vertical scratching (such as one that a fingernail can detect by scratching), or a dent on the cylinder liner caused by valve impact?	Yes	Replace or overhaul the engine as a partial engine. (See ENGINE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) Refer to the engine workshop manual.
No	Go to the next step.
10	INSPECT CRANKSHAFT BEARING SYSTEM FOR DAMAGE • Remove belts from the engine accessories. (See DRIVE BELT REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) • Install a wrench to the crankshaft pulley lock bolt and turn it clockwise. (See FRONT OIL SEAL REPLACEMENT [SKYACTIV-D 1.8].) • Does it rotate smoothly?	Yes	If there are any dents or melt adhesion on the cylinder head in Step 8: • Replace or overhaul the cylinder head. (See CYLINDER HEAD GASKET REPLACEMENT [SKYACTIV-D 1.8].) Add engine oil, then go to repair completion verification. (See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)
No	Overhaul the engine. After performing the repair, go to repair completion verification.
11	VISUALLY INSPECT INTERNAL AREA OF CYLINDER • Is there any vertical scratching (such as one that a fingernail can detect by scratching), or a dent on the cylinder liner caused by valve impact?	Yes	Overhaul the engine. After performing the repair, go to repair completion verification.
No	Go to the next step.
12	INSPECT CRANKSHAFT BEARING SYSTEM FOR DAMAGE • Remove belts from the engine accessories. (See DRIVE BELT REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) • Install a wrench to the crankshaft pulley lock bolt and turn it clockwise. (See FRONT OIL SEAL REPLACEMENT [SKYACTIV-D 1.8].) • Does it rotate smoothly?	Yes	The internal engine parts are normal. Add engine oil, then go to the next step. (See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)
No	Overhaul the engine. After performing the repair, go to the next step.
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. ― Perform the fuel injection learning. (See FUEL INJECTOR INJECTION AMOUNT CORRECTION [SKYACTIV-D 1.8].) ― Start the engine and drive the vehicle under the FREEZE FRAME DATA/snapshot data condition. Warning • To prevent an accident, work with another person when the vehicle is being driven (one person drives vehicle, other person operates M-MDS). • Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured. • 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

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.

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.

Go to the next step.

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)].)

Go to the next step.

VERIFY ENGINE OIL LEVEL

• Verify the engine oil level.

(See ENGINE OIL LEVEL INSPECTION [SKYACTIV-D 1.8].)

• Is the engine oil amount above X line on the oil level gauge?

Yes

Go to the next step.

Replace or add engine oil, then go to Step 9.

(See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)

INSPECT OIL PENETRATION TO ENGINE (COMBUSTION CHAMBER) FOR MALFUNCTION

• Verify that there is no engine oil in the charge air cooler.

• Remove the charge air cooler.

(See WATER-COOLED CHARGE AIR COOLER REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Note

• Oil may penetrate into the charge air cooler due to the driving conditions or excessive oil refilling.

• When tilting the charge air cooler, does engine oil drain from the charge air cooler.

Yes

Discharge the oil in the charge air cooler, then go to the next step.

Replace engine oil, then go to repair completion verification.

(See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)

DETERMINE IF MALFUNCTION CAUSE IS ENGINE BURNING OR SEIZURE, OR ABNORMAL COMBUSTION

• Remove the glow plug.

(See GLOW PLUG REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

• Is the heat-generating area of the glow plug burnt out?

Yes

Go to the next step.

Replace engine oil, then go to repair completion verification.

(See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)

INSPECT FUEL INJECTOR FOR MALFUNCTION

• Inspect the applicable part.

(See FUEL INJECTOR INSPECTION [SKYACTIV-D 1.8].)

• Is the part normal?

Yes

Go to the next step.

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

(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

VISUALLY INSPECT CYLINDER HEAD

• Remove the cylinder head and visually inspect the following:

(See CYLINDER HEAD GASKET REPLACEMENT [SKYACTIV-D 1.8].)

― Dents caused by piston impact, or adhesion of melt from glow plug, fuel injector, or piston on cylinder head

• Is there any damage or melt adhesion?

Yes

Go to the next step.

Go to Step 11.

VISUALLY INSPECT CYLINDER INTERNAL

• Is there any vertical scratching (such as one that a fingernail can detect by scratching), or a dent on the cylinder liner caused by valve impact?

Yes

Replace or overhaul the engine as a partial engine.

(See ENGINE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Refer to the engine workshop manual.

Go to the next step.

INSPECT CRANKSHAFT BEARING SYSTEM FOR DAMAGE

• Remove belts from the engine accessories.

(See DRIVE BELT REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

• Install a wrench to the crankshaft pulley lock bolt and turn it clockwise.

(See FRONT OIL SEAL REPLACEMENT [SKYACTIV-D 1.8].)

• Does it rotate smoothly?

Yes

If there are any dents or melt adhesion on the cylinder head in Step 8:

• Replace or overhaul the cylinder head.

(See CYLINDER HEAD GASKET REPLACEMENT [SKYACTIV-D 1.8].)

Add engine oil, then go to repair completion verification.

(See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)

Overhaul the engine.

After performing the repair, go to repair completion verification.

VISUALLY INSPECT INTERNAL AREA OF CYLINDER

• Is there any vertical scratching (such as one that a fingernail can detect by scratching), or a dent on the cylinder liner caused by valve impact?

Yes

Overhaul the engine.

After performing the repair, go to repair completion verification.

Go to the next step.

INSPECT CRANKSHAFT BEARING SYSTEM FOR DAMAGE

• Remove belts from the engine accessories.

(See DRIVE BELT REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

• Install a wrench to the crankshaft pulley lock bolt and turn it clockwise.

(See FRONT OIL SEAL REPLACEMENT [SKYACTIV-D 1.8].)

• Does it rotate smoothly?

Yes

The internal engine parts are normal.

Add engine oil, then go to the next step.

(See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.8].)

Overhaul the engine.

After performing the repair, go to the next step.

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.

― Perform the fuel injection learning.

(See FUEL INJECTOR INJECTION AMOUNT CORRECTION [SKYACTIV-D 1.8].)

― Start the engine and drive the vehicle under the FREEZE FRAME DATA/snapshot data condition.

Warning

• To prevent an accident, work with another person when the vehicle is being driven (one person drives vehicle, other person operates M-MDS).

• Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured.

• 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].)

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.

DTC troubleshooting completed.

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