DTC P0471:00 [PCM (SKYACTIV-D 2.2)]

id0102j5212400

DTC P0471:00

Exhaust gas pressure sensor No.1 circuit range/performance problem

DETECTION CONDITION

•  If the following condition A, B, or C continues for 1.8 s.

Condition A

•  When the following conditions are met, the difference between the value detected by exhaust gas pressure sensor No.1 and the barometric pressure exceeds 55.8 kPa {0.569 kgf/cm², 8.09 psi}.

―  Battery positive voltage: 10 V or more

―  7—9 s have elapsed after ignition is switched off

―  The following DTCs are not detected

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

•  MAP sensor No.1: P0237:00, P0238:00

•  MAP sensor No.2: P0107:00, P0108:00

•  Exhaust gas pressure sensor No.1: P0472:00, P0473:00

•  BARO sensor: P2226:00, P2228:00, P2229:00

Condition B

•  Difference between the value detected by exhaust gas sensor No.1 and the value detected by MAP sensor No.2 exceeds 60.1 kPa {0.613 kgf/cm², 8.72 psi}.

―  Battery positive voltage: 10 V or more

―  7—9 s have elapsed after ignition is switched off

―  The following DTCs are not detected

•  Constant voltage power supply control system: P0642:00, P0643:00

•  MAP sensor No.1: P0237:00, P0238:00

•  MAP sensor No.2: P0107:00, P0108:00

•  Exhaust gas pressure sensor P0472:00, P0473:00

•  BARO sensor: P2226:00, P2228:00, P2229:00

Condition C

•  Difference between the value detected by exhaust gas pressure sensor No.1 and the value detected by MAP sensor No.1 exceeds 80.7 kPa {0.823 kgf/cm², 11.7 psi}.

―  Battery positive voltage: 10 V or more

―  7—9 s have elapsed after ignition is switched off

―  The following DTCs are not detected

•  Constant voltage power supply control system: P0642:00, P0643:00

•  MAP sensor No.1: P0237:00, P0238:00

•  MAP sensor No.2: P0107:00, P0108:00

•  Exhaust gas pressure sensor P0472:00, P0473:00

•  BARO sensor: P2226:00, P2228:00, P2229:00

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

•  MAP sensor No.2 connector or terminal malfunction

•  MAP sensor No.1 connector or terminal malfunction

•  PCM connector or terminal malfunction

•  Exhaust gas pressure sensor No.1 malfunction

•  MAP sensor No.2 malfunction

•  MAP sensor No.1 malfunction

•  BARO sensor malfunction (integrated with PCM)

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC P0471:00	Exhaust gas pressure sensor No.1 circuit range/performance problem
DETECTION CONDITION	• If the following condition A, B, or C continues for 1.8 s. Condition A • When the following conditions are met, the difference between the value detected by exhaust gas pressure sensor No.1 and the barometric pressure exceeds 55.8 kPa {0.569 kgf/cm², 8.09 psi}. ― Battery positive voltage: 10 V or more ― 7—9 s have elapsed after ignition is switched off ― The following DTCs are not detected • Constant voltage power supply control system: P0652:00, P0653:00 • MAP sensor No.1: P0237:00, P0238:00 • MAP sensor No.2: P0107:00, P0108:00 • Exhaust gas pressure sensor No.1: P0472:00, P0473:00 • BARO sensor: P2226:00, P2228:00, P2229:00 Condition B • Difference between the value detected by exhaust gas sensor No.1 and the value detected by MAP sensor No.2 exceeds 60.1 kPa {0.613 kgf/cm², 8.72 psi}. ― Battery positive voltage: 10 V or more ― 7—9 s have elapsed after ignition is switched off ― The following DTCs are not detected • Constant voltage power supply control system: P0642:00, P0643:00 • MAP sensor No.1: P0237:00, P0238:00 • MAP sensor No.2: P0107:00, P0108:00 • Exhaust gas pressure sensor P0472:00, P0473:00 • BARO sensor: P2226:00, P2228:00, P2229:00 Condition C • Difference between the value detected by exhaust gas pressure sensor No.1 and the value detected by MAP sensor No.1 exceeds 80.7 kPa {0.823 kgf/cm², 11.7 psi}. ― Battery positive voltage: 10 V or more ― 7—9 s have elapsed after ignition is switched off ― The following DTCs are not detected • Constant voltage power supply control system: P0642:00, P0643:00 • MAP sensor No.1: P0237:00, P0238:00 • MAP sensor No.2: P0107:00, P0108:00 • Exhaust gas pressure sensor P0472:00, P0473:00 • BARO sensor: P2226:00, P2228:00, P2229:00 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 • MAP sensor No.2 connector or terminal malfunction • MAP sensor No.1 connector or terminal malfunction • PCM connector or terminal malfunction • Exhaust gas pressure sensor No.1 malfunction • MAP sensor No.2 malfunction • MAP sensor No.1 malfunction • BARO sensor malfunction (integrated with PCM) • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

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.
2		No	Repair or replace the connector, then go to Step 10.
3	INSPECT MAP SENSOR NO.2 CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the MAP sensor No.2 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 10.
4	INSPECT MAP SENSOR NO.1 CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the MAP 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.
4		No	Repair or replace the connector, then go to Step 10.
5	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.
5		No	Repair or replace the connector, then go to Step 10.
6	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.
6		No	Replace exhaust gas pressure sensor No.1, then go to Step 10. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
7	INSPECT MAP SENSOR NO.2 • Reconnect all the disconnected connectors. • Inspect MAP sensor No.2. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is MAP sensor No.2 normal?	Yes	Go to the next step.
7		No	Replace MAP sensor No.2, then go to Step 10. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
8	INSPECT MAP SENSOR NO.1 • Reconnect all the disconnected connectors. • Inspect MAP sensor No.1. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is MAP sensor No.1 normal?	Yes	Go to the next step.
8		No	Replace MAP sensor No.1, then go to Step 10. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
9	INSPECT BARO SENSOR • Inspect the BARO sensor. (See BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION [SKYACTIV-D 2.2] • Is the BARO sensor normal?	Yes	Go to the next step.
9		No	Replace the BARO sensor, then go to the next step. (See BAROMETRIC PRESSURE (BARO) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
10	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)].) • Start the engine and warm it up. • Stop the vehicle, switch the ignition OFF, and wait for 20 s. • Switch the ignition ON (engine off). • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) • Has DTC P0471:00 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].)
10		No	Go to the next step.
11	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)].)
11		No	DTC troubleshooting completed.