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DTC P0192:00 [PCM (SKYACTIV-X)]

id0102u9147700

Outline

System malfunction location

High fuel pressure sensor circuit low input

Detection condition

•  The high fuel pressure sensor output voltage is less than 0.51 V for a continuous 5 s.

Fail-safe

•  Stops the spill valve control solenoid valve (integrated with high pressure fuel pump) to perform limp-home driving using the pressure on the low pressure side.

•  Limits intake air amount.

Possible cause

•  High fuel pressure sensor/high fuel temperature sensor connector or terminals malfunction

•  PCM connector or terminals malfunction

•  Short to ground in any of the following high fuel pressure sensor circuits.

―  Power supply circuit

―  Signal circuit

•  Short circuit in high fuel pressure sensor signal circuit and ground circuit

•  High fuel pressure sensor malfunction

•  High pressure fuel pump malfunction

•  PCM malfunction

System malfunction location	High fuel pressure sensor circuit low input
Detection condition	• The high fuel pressure sensor output voltage is less than 0.51 V for a continuous 5 s.
Fail-safe	• Stops the spill valve control solenoid valve (integrated with high pressure fuel pump) to perform limp-home driving using the pressure on the low pressure side. • Limits intake air amount.
Possible cause	• High fuel pressure sensor/high fuel temperature sensor connector or terminals malfunction • PCM connector or terminals malfunction • Short to ground in any of the following high fuel pressure sensor circuits. ― Power supply circuit ― Signal circuit • Short circuit in high fuel pressure sensor signal circuit and ground circuit • High fuel pressure sensor malfunction • High pressure fuel pump malfunction • PCM malfunction

Related PIDs

PIDs	Reference
FUEL_PRES	(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-X)].)

Related Simulation items

Simulation items	Reference
FUEL_PUMP_REQ	(See SIMULATION TABLE [PCM (SKYACTIV-X)].)

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 HIGH FUEL PRESSURE SENSOR/HIGH FUEL TEMPERATURE SENSOR CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

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

4

INSPECT PCM CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

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

5

INSPECT HIGH FUEL PRESSURE SENSOR POWER SUPPLY CIRCUIT AND SIGNAL CIRCUIT FOR SHORT TO GROUND

•  Inspect the applicable circuit for a short to ground.
(See CIRCUIT INSPECTION.)

•  Is the circuit normal?

Yes

Go to the next step.

No

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

6

INSPECT HIGH FUEL PRESSURE SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT CIRCUIT

•  Inspect the applicable circuits for a short circuit.
(See CIRCUIT INSPECTION.)

•  Is the circuit normal?

Yes

Go to the next step.

No

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

7

INSPECT HIGH FUEL PRESSURE SENSOR

•  Bleed the remaining pressure in the fuel line using the following procedure.

1.  Switch the ignition off.

2.  Disconnect the high pressure fuel pump connector.

3.  Start the engine and leave it idling for 1 min.

•  Display PID FUEL_PRES and simulation item FUEL_PUMP_REQ using the M-MDS.
(See PID/DATA MONITOR INSPECTION.)

•  Turn simulation item FUEL_PUMP_REQ on.

•  Is the FUEL_PRES PID value approx. 0.83 V?

Yes

Go to the next step.

No

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

(See FUEL DISTRIBUTOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

8

INSPECT HIGH PRESSURE FUEL PUMP FOR MALFUNCTION

•  Inspect the applicable part.
(See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-X 2.0].)

•  Is the part normal?

Yes

Go to the next step.

No

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

(See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

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 KOEO or KOER self test.
(See DTC INSPECTION.)

•  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-X 2.0].)

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 HIGH FUEL PRESSURE SENSOR/HIGH FUEL TEMPERATURE SENSOR CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION • Are the connector and terminal normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT PCM CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT HIGH FUEL PRESSURE SENSOR POWER SUPPLY CIRCUIT AND SIGNAL CIRCUIT FOR SHORT TO GROUND • Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT HIGH FUEL PRESSURE SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT CIRCUIT • Inspect the applicable circuits for a short circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT HIGH FUEL PRESSURE SENSOR • Bleed the remaining pressure in the fuel line using the following procedure. 1. Switch the ignition off. 2. Disconnect the high pressure fuel pump connector. 3. Start the engine and leave it idling for 1 min. • Display PID FUEL_PRES and simulation item FUEL_PUMP_REQ using the M-MDS. (See PID/DATA MONITOR INSPECTION.) • Turn simulation item FUEL_PUMP_REQ on. • Is the FUEL_PRES PID value approx. 0.83 V?	Yes	Go to the next step.
7		No	Replace the fuel distributor, then go to the next step. (See FUEL DISTRIBUTOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
8	INSPECT HIGH PRESSURE FUEL PUMP FOR MALFUNCTION • Inspect the applicable part. (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-X 2.0].) • Is the part normal?	Yes	Go to the next step.
8		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
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 KOEO or KOER self test. (See DTC INSPECTION.) • 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-X 2.0].)
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.