DTC P0089:00 [PCM (SKYACTIV-D)]

System malfunction location	High fuel pressure malfunction in common rail fuel pressure control system
Detection condition	• With the following conditions met, the actual fuel pressure exceeds 217 MPa{2213 kgf/cm², 31473 psi} for a continuous 3 s. ― Battery positive voltage: 8—16 V ― 0.5 s have elapsed after ignition is switched ON (engine off or on) ― The following DTCs are not detected • Fuel pressure sensor: P01C6:00, P01C5:00, P018D:00, P018C:00, P10CD:00
Fail-safe	• PCM restricts fuel pressure. (high pressure side). • 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. • Inhibits engine-stop by operating the i-stop function.
Possible cause	• Fuel pressure sensor (integrated with fuel injector No.2) connector or terminal malfunction • Fuel pressure sensor (integrated with fuel injector No.3) connector or terminal malfunction • Fuel filter clogging • Erroneous piping (poor connection) of fuel pipe • Suction control valve malfunction • Supply pump malfunction • Fuel pressure relief valve malfunction • PCM malfunction
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

System malfunction location

High fuel pressure malfunction in common rail fuel pressure control system

Detection condition

• With the following conditions met, the actual fuel pressure exceeds 217 MPa{2213 kgf/cm², 31473 psi} for a continuous 3 s.

― Battery positive voltage: 8—16 V

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

― The following DTCs are not detected

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

Fail-safe

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

• 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.

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

Possible cause

• Fuel pressure sensor (integrated with fuel injector No.2) connector or terminal malfunction

• Fuel pressure sensor (integrated with fuel injector No.3) connector or terminal malfunction

• Fuel filter clogging

• Erroneous piping (poor connection) of fuel pipe

• Suction control valve malfunction

• Supply pump malfunction

• Fuel pressure relief valve 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 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].)
4	INSPECT FUEL FILTER 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. (See FUEL FILTER BODY REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
5	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.
6	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].)
7	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].)
8	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].)
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. ― Start the engine and warm it up. ― Stop all electrical loads. (Such as A/C, headlights, blower fan, rear window defroster) ― Drive the vehicle on flat roads under the following conditions 4 times repeatedly. Warning • Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured. 1. Accelerate to 15 km/h {9.3 mph} and decelerate to 0 km/h{0 mph}. 2. Wait for 20 s while idling. 3. Accelerate to 30 km/h{19 mph}, and decelerate to 0 km/h{0 mph} after driving the vehicle while maintaining the speed for 20 s. 4. Wait for 20 s while idling. 5. Accelerate to 50 km/h{31 mph}, and decelerate to 0 km/h {0 mph} after driving the vehicle while maintaining the speed for 20 s. 6. Wait for 20 s while idling. ― Accelerate to 70 km/h {43 mph} and drive the vehicle while maintaining the speed for 60 s. ― Decelerate to 50 km/h{31 mph} and drive the vehicle while maintaining the speed for 60 s. ― Accelerate to 70 km/h{43 mph} and drive the vehicle while maintaining the speed for 60 s. ― Accelerate to 100 km/h {62.1 mph} and drive the vehicle while maintaining the speed for 30 s. ― Accelerate to 120 km/h{74.6 mph} and decelerate to 0 km/h{0 mph}. ― Stop the engine. • 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 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 FILTER 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.

(See FUEL FILTER BODY 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 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 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].)

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].)

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.

― Start the engine and warm it up.

― Stop all electrical loads. (Such as A/C, headlights, blower fan, rear window defroster)

― Drive the vehicle on flat roads under the following conditions 4 times repeatedly.

Warning

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

1. Accelerate to 15 km/h {9.3 mph} and decelerate to 0 km/h{0 mph}.

2. Wait for 20 s while idling.

3. Accelerate to 30 km/h{19 mph}, and decelerate to 0 km/h{0 mph} after driving the vehicle while maintaining the speed for 20 s.

4. Wait for 20 s while idling.

5. Accelerate to 50 km/h{31 mph}, and decelerate to 0 km/h {0 mph} after driving the vehicle while maintaining the speed for 20 s.

6. Wait for 20 s while idling.

― Accelerate to 70 km/h {43 mph} and drive the vehicle while maintaining the speed for 60 s.

― Decelerate to 50 km/h{31 mph} and drive the vehicle while maintaining the speed for 60 s.

― Accelerate to 70 km/h{43 mph} and drive the vehicle while maintaining the speed for 60 s.

― Accelerate to 100 km/h {62.1 mph} and drive the vehicle while maintaining the speed for 30 s.

― Accelerate to 120 km/h{74.6 mph} and decelerate to 0 km/h{0 mph}.

― Stop the engine.

• 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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