DTC P0472:00 [PCM (SKYACTIV-D 2.2)]

id0102j5321600

DTC P0472:00

Exhaust gas pressure sensor No.1 circuit low input

DETECTION CONDITION

•  With the following conditions met, the exhaust gas pressure sensor No.1 output voltage is less than 0.38 V for a continuous 5 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

•  Constant voltage power supply control system: P0652:00, P0653:00

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

•  FREEZE FRAME DATA/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Limits engine torque.

•  Inhibits the automatic diesel particulate filter regeneration control.

•  Inhibits the manual diesel particulate filter regeneration control.

•  Inhibits the EGR control.

•  Stops the G-vectoring control (GVC).

•  Limits the engine transaxle total control.

POSSIBLE CAUSE

•  Exhaust gas pressure sensor No.1 connector or terminal malfunction

•  PCM connector or terminal malfunction

•  Short to ground in wiring harness between the following terminals:

―  Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ

―  Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE

•  Short circuit in exhaust gas pressure sensor No.1 signal circuit and ground circuit

•  Open circuit in wiring harness between the following terminals:

―  Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ

―  Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE

•  Exhaust gas pressure sensor No.1 malfunction

•  PCM malfunction

DTC P0472:00	Exhaust gas pressure sensor No.1 circuit low input
DETECTION CONDITION	• With the following conditions met, the exhaust gas pressure sensor No.1 output voltage is less than 0.38 V for a continuous 5 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 • Constant voltage power supply control system: P0652:00, P0653:00 Diagnostic support note • This is a continuous monitor (CCM). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Limits engine torque. • Inhibits the automatic diesel particulate filter regeneration control. • Inhibits the manual diesel particulate filter regeneration control. • Inhibits the EGR control. • Stops the G-vectoring control (GVC). • Limits the engine transaxle total control.
POSSIBLE CAUSE	• Exhaust gas pressure sensor No.1 connector or terminal malfunction • PCM connector or terminal malfunction • Short to ground in wiring harness between the following terminals: ― Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ ― Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE • Short circuit in exhaust gas pressure sensor No.1 signal circuit and ground circuit • Open circuit in wiring harness between the following terminals: ― Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ ― Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE • Exhaust gas pressure sensor No.1 malfunction • PCM malfunction

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

INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 CONNECTOR CONDITION

•  Switch the ignition OFF.

•  Disconnect the exhaust gas pressure sensor No.1 connector.

•  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.

•  Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 8.

3

INSPECT PCM CONNECTOR CONDITION

•  Disconnect the PCM connector.

•  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.

•  Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 8.

4

INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 CIRCUIT FOR SHORT TO GROUND

•  Verify that the exhaust gas pressure sensor No.1 connector and the PCM connector are disconnected.

•  Inspect for continuity between the following terminals (vehicle wiring harness side and ground.

―  Exhaust gas pressure sensor No.1 terminal A

―  Exhaust gas pressure sensor No.1 terminal B

•  Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

•  Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ

•  Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE

If there is a common connector:

―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.

―  Repair or replace the malfunctioning location.

If there is no common connector:

―  Repair or replace the wiring harness which is shorted to ground.

Go to Step 8.

No

Go to the next step.

5

INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT CIRCUIT

•  Verify that the exhaust gas pressure sensor No.1 connector and the PCM connector are disconnected.

•  Inspect for continuity between exhaust gas pressure sensor No.1 terminals B and C (vehicle wiring harness side).

•  Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

•  Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE

•  Exhaust gas pressure sensor No.1 terminal C and PCM terminal 1CF

If there is a common connector:

―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location.

―  Repair or replace the malfunctioning location.

If there is no common connector:

―  Repair or replace the malfunctioning wiring harness.

Go to Step 8.

No

Go to the next step.

6

INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 CIRCUIT FOR OPEN CIRCUIT

•  Verify that the exhaust gas pressure sensor No.1 connector and the PCM connector are disconnected.

•  Inspect the wiring harness for continuity between the following terminals (vehicle wiring harness side).

―  Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ

―  Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE

•  Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

•  Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ

•  Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE

If there is a common connector:

―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.

―  Repair or replace the malfunctioning location.

If there is no common connector:

―  Repair or replace the wiring harness which has an open circuit.

Go to Step 8.

7

INSPECT EXHAUST GAS PRESSURE SENSOR NO.1

•  Reconnect all the disconnected connectors.

•  Inspect exhaust gas pressure sensor No.1.
(See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 2.2].)

•  Is exhaust gas pressure sensor No.1 normal?

Yes

Go to the next step.

No

Replace exhaust gas pressure sensor No.1, then go to the next step.

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

8

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)].)

•  Perform the KOEO or KOER self-test.
(See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)].)

•  Has DTC P0472:00 been recorded?

Yes

Repeat the inspection from Step 1.

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

No

Go to the next step.

9

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	INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the exhaust gas pressure sensor No.1 connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
2		No	Repair or replace the connector, then go to Step 8.
3	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
3		No	Repair or replace the connector, then go to Step 8.
4	INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 CIRCUIT FOR SHORT TO GROUND • Verify that the exhaust gas pressure sensor No.1 connector and the PCM connector are disconnected. • Inspect for continuity between the following terminals (vehicle wiring harness side and ground. ― Exhaust gas pressure sensor No.1 terminal A ― Exhaust gas pressure sensor No.1 terminal B • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ • Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE If there is a common connector: ― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location. ― Repair or replace the malfunctioning location. If there is no common connector: ― Repair or replace the wiring harness which is shorted to ground. Go to Step 8.
4		No	Go to the next step.
5	INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT CIRCUIT • Verify that the exhaust gas pressure sensor No.1 connector and the PCM connector are disconnected. • Inspect for continuity between exhaust gas pressure sensor No.1 terminals B and C (vehicle wiring harness side). • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE • Exhaust gas pressure sensor No.1 terminal C and PCM terminal 1CF If there is a common connector: ― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location. ― Repair or replace the malfunctioning location. If there is no common connector: ― Repair or replace the malfunctioning wiring harness. Go to Step 8.
5		No	Go to the next step.
6	INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 CIRCUIT FOR OPEN CIRCUIT • Verify that the exhaust gas pressure sensor No.1 connector and the PCM connector are disconnected. • Inspect the wiring harness for continuity between the following terminals (vehicle wiring harness side). ― Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ ― Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE • Is there continuity?	Yes	Go to the next step.
6		No	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • Exhaust gas pressure sensor No.1 terminal A and PCM terminal 1CJ • Exhaust gas pressure sensor No.1 terminal B and PCM terminal 1CE If there is a common connector: ― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location. ― Repair or replace the malfunctioning location. If there is no common connector: ― Repair or replace the wiring harness which has an open circuit. Go to Step 8.
7	INSPECT EXHAUST GAS PRESSURE SENSOR NO.1 • Reconnect all the disconnected connectors. • Inspect exhaust gas pressure sensor No.1. (See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is exhaust gas pressure sensor No.1 normal?	Yes	Go to the next step.
7		No	Replace exhaust gas pressure sensor No.1, then go to the next step. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
8	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)].) • Perform the KOEO or KOER self-test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)].) • Has DTC P0472:00 been recorded?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
8		No	Go to the next step.
9	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)].)
9		No	DTC troubleshooting completed.