DTC P0093:00 [PCM (SKYACTIV-D)]

System malfunction location	Fuel leakage from fuel pressure control system
Detection condition	• With the following conditions met, a condition in which the amount of fuel leakage exceeds 240 mm³/stroke is detected 3 times. ― Battery positive voltage: 8 V or more ― Engine speed: 600 rpm or more ― Fuel-cut control is not implemented ― Fuel pressure relief valve: Closed ― Fuel pressure control: During execution ― CKP sensor: Normal ― The following DTCs are not detected • Suction control valve: P0628:00, P0629:00 • Common rail fuel pressure control system: P0089:00 • Fuel injector: P2146:00, P2149:00, P2148:00, P2151:00, P2147:00, P2150:00, P1379:00, P1378:00, P0201:00, P0202:00, P0203:00, P0204:00 • Malfunction in PCM: P062B:00 • Fuel pressure sensor: P01C6:00, P01C5:00, P018D:00, P018C:00, P10CD:00
Fail-safe	• PCM restricts engine torque. • PCM restricts fuel pressure. (high pressure side). • Limits the maximum engine speed. • Inhibits the DENOx/DESOx control. • Inhibits the diesel particulate filter regeneration control. • Inhibits the EGR control. • PCM restricts engine-transaxle integration control. (ATX) • Inhibits engine-stop by operating the i-stop function.
Possible cause	• Fuel pressure relief valve malfunction • Suction control valve malfunction • Fuel pressure sensor (integrated with fuel injector No.2/No.3) malfunction • Fuel injector malfunction • Fuel pipe crushing or breakage (poor contact) • Fuel leakage or clogging in fuel line • Supply pump malfunction • PCM malfunction
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

System malfunction location

Fuel leakage from fuel pressure control system

Detection condition

• With the following conditions met, a condition in which the amount of fuel leakage exceeds 240 mm³/stroke is detected 3 times.

― Battery positive voltage: 8 V or more

― Engine speed: 600 rpm or more

― Fuel-cut control is not implemented

― Fuel pressure relief valve: Closed

― Fuel pressure control: During execution

― CKP sensor: Normal

― The following DTCs are not detected

• Suction control valve: P0628:00, P0629:00

• Common rail fuel pressure control system: P0089:00

• Fuel injector: P2146:00, P2149:00, P2148:00, P2151:00, P2147:00, P2150:00, P1379:00, P1378:00, P0201:00, P0202:00, P0203:00, P0204:00

• Malfunction in PCM: P062B:00

• Fuel pressure sensor: P01C6:00, P01C5:00, P018D:00, P018C:00, P10CD:00

Fail-safe

• PCM restricts engine torque.

• PCM restricts fuel pressure. (high pressure side).

• Limits the maximum engine speed.

• Inhibits the DENOx/DESOx control.

• Inhibits the diesel particulate filter regeneration control.

• Inhibits the EGR control.

• PCM restricts engine-transaxle integration control. (ATX)

• Inhibits engine-stop by operating the i-stop function.

Possible cause

• Fuel pressure relief valve malfunction

• Suction control valve malfunction

• Fuel pressure sensor (integrated with fuel injector No.2/No.3) malfunction

• Fuel injector malfunction

• Fuel pipe crushing or breakage (poor contact)

• Fuel leakage or clogging in fuel line

• Supply pump malfunction

• 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	INSPECT FUEL PRESSURE RELIEF VALVE FOR MALFUNCTION • Inspect the applicable part. (See FUEL PRESSURE RELIEF VALVE 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 COMMON RAIL REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
5	INSPECT SUCTION CONTROL VALVE FOR MALFUNCTION • Inspect the applicable part. (See SUCTION CONTROL VALVE 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 SUCTION CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
6	INSPECT FUEL PRESSURE SENSOR FOR MALFUNCTION • Inspect the applicable part. (See FUEL PRESSURE 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 COMMON RAIL REMOVAL/INSTALLATION [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	INSPECT FUEL PIPING FOR MALFUNCTION • Inspect the applicable part. • Is the part normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
9	INSPECT FUEL LINE FOR FUEL LEAKAGE OR CLOGGING • Inspect the following fuel lines of each cylinder for fuel leakage or clogging. ― Supply pump to common rail ― Common rail to fuel injector • Is the fuel line normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location, then go to repair completion verification.
10	INSPECT SUPPLY PUMP FOR MALFUNCTION • Inspect the applicable part. (See SUPPLY PUMP 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 SUPPLY PUMP 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. 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. ― Start the engine and drive the vehicle under the freeze frame data/snapshot data condition. • 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.

INSPECT FUEL PRESSURE RELIEF VALVE FOR MALFUNCTION

• Inspect the applicable part.

(See FUEL PRESSURE RELIEF VALVE 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 COMMON RAIL REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

INSPECT SUCTION CONTROL VALVE FOR MALFUNCTION

• Inspect the applicable part.

(See SUCTION CONTROL VALVE 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 SUCTION CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

INSPECT FUEL PRESSURE SENSOR FOR MALFUNCTION

• Inspect the applicable part.

(See FUEL PRESSURE SENSOR 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 COMMON RAIL REMOVAL/INSTALLATION [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].)

INSPECT FUEL PIPING FOR MALFUNCTION

• Inspect the applicable part.

• Is the part normal?

Yes

Go to the next step.

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

INSPECT FUEL LINE FOR FUEL LEAKAGE OR CLOGGING

• Inspect the following fuel lines of each cylinder for fuel leakage or clogging.

― Supply pump to common rail

― Common rail to fuel injector

• Is the fuel line normal?

Yes

Go to the next step.

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

INSPECT SUPPLY PUMP FOR MALFUNCTION

• Inspect the applicable part.

(See SUPPLY PUMP 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 SUPPLY PUMP 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.

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.

― Start the engine and drive the vehicle under the freeze frame data/snapshot data condition.

• 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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