DTC P245B:00 [PCM (SKYACTIV-D 2.2)]

id0102j5886600

DTC P245B:00

EGR cooler bypass valve control: Duty signal error

DETECTION CONDITION

•  The EGR cooler bypass valve control duty value is 95% or more for a continuous 3 s when the following conditions are met.

―  EGR cooler bypass valve stuck

―  The following DTCs are not detected

•  EGR cooler bypass valve position sensor: P2494:00, P2495:00

•  EGR cooler bypass valve control system: P245A:00, P24A5:00

•  EGR cooler bypass valve control device in PCM: P16A2:00

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.

•  Inhibits engine-stop by i-stop control.

POSSIBLE CAUSE

•  EGR cooler bypass valve/EGR cooler bypass valve position sensor connector or terminal malfunction

•  PCM connector or terminal malfunction

•  Open circuit in wiring harness between the following terminals:

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

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

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

•  Short to power supply in wiring harness between the following terminals

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

•  EGR cooler bypass valve position sensor malfunction

•  EGR cooler bypass valve malfunction

•  PCM malfunction

DTC P245B:00	EGR cooler bypass valve control: Duty signal error
DETECTION CONDITION	• The EGR cooler bypass valve control duty value is 95% or more for a continuous 3 s when the following conditions are met. ― EGR cooler bypass valve stuck ― The following DTCs are not detected • EGR cooler bypass valve position sensor: P2494:00, P2495:00 • EGR cooler bypass valve control system: P245A:00, P24A5:00 • EGR cooler bypass valve control device in PCM: P16A2:00 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. • Inhibits engine-stop by i-stop control.
POSSIBLE CAUSE	• EGR cooler bypass valve/EGR cooler bypass valve position sensor connector or terminal malfunction • PCM connector or terminal malfunction • Open circuit in wiring harness between the following terminals: ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC • Short to ground in wiring harness between the following terminals: ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC • Short to power supply in wiring harness between the following terminals ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC • EGR cooler bypass valve position sensor malfunction • EGR cooler bypass valve 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 EGR COOLER BYPASS VALVE/EGR COOLER BYPASS VALVE POSITION SENSOR CONNECTOR CONDITION

•  Switch the ignition OFF.

•  Disconnect the EGR cooler bypass valve/EGR cooler bypass valve position sensor 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 9.

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 9.

4

INSPECT EGR COOLER BYPASS VALVE CIRCUIT FOR OPEN CIRCUIT

•  Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector and the PCM connector are disconnected.

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

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

•  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.

•  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

•  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

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 9.

5

INSPECT EGR COOLER BYPASS VALVE POSITION SENSOR CIRCUIT FOR SHORT TO GROUND

•  Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector and the PCM connector are disconnected.

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

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A

•  Is there continuity?

Yes

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

•  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

•  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

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 9.

No

Go to the next step.

6

INSPECT EGR VALVE CIRCUIT FOR SHORT TO POWER SUPPLY

•  Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector and the PCM connector are disconnected.

•  Switch the ignition ON (engine off).

•  Measure the voltage at the following terminals (vehicle wiring harness side).

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E

―  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A

•  Is the voltage 0 V?

Yes

Go to the next step.

No

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

•  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

•  EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

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 power supply 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 the power supply.

Go to Step 9.

7

INSPECT EGR COOLER BYPASS VALVE POSITION SENSOR

•  Reconnect all the disconnected connectors.

•  Inspect the EGR cooler bypass valve position sensor.

•  Is the EGR cooler bypass valve position sensor normal?

Yes

Go to the next step.

No

Replace the EGR cooler bypass valve, then go to Step 9.

8

EGR COOLER BYPASS VALVE INSPECTION

•  Inspect the EGR cooler bypass valve.

•  Is the EGR cooler bypass valve normal?

Yes

Go to the next step.

No

Replace the EGR cooler bypass valve, then go to the next step.

9

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Reconnect all the disconnected connectors.

•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.

•  Drive the vehicle on flat roads under the following conditions 5 times repeatedly.

1.  Idle the engine for 20 s.

2.  Accelerate in 2nd gear to 35 km/h and drive the vehicle while maintaining the speed for 25 s.

3.  Stop the vehicle and idle the engine for 20 s.

4.  Accelerate in 3rd gear to 50 km/h and drive the vehicle while maintaining the speed for 50 s.

5.  Stop the vehicle and idle the engine for 20 s.

•  Stop the engine.

•  Display the DTCs using the M-MDS.

•  Has DTC P245B:00 been recorded?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the PCM, then go to the next step.

No

Go to the next step.

10

VERIFY OTHER DTCs

•  Has any other DTC or pending code been stored?

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 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 EGR COOLER BYPASS VALVE/EGR COOLER BYPASS VALVE POSITION SENSOR CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the EGR cooler bypass valve/EGR cooler bypass valve position sensor 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 9.
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 9.
4	INSPECT EGR COOLER BYPASS VALVE CIRCUIT FOR OPEN CIRCUIT • Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector and the PCM connector are disconnected. • Inspect between the following terminals (vehicle wiring harness side) for continuity. ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC • Is there continuity?	Yes	Go to the next step.
4		No	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC 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 9.
5	INSPECT EGR COOLER BYPASS VALVE POSITION SENSOR CIRCUIT FOR SHORT TO GROUND • Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector and the PCM connector are disconnected. • Inspect for continuity between the following terminals (vehicle wiring harness side) and ground. ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC 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 9.
5		No	Go to the next step.
6	INSPECT EGR VALVE CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector and the PCM connector are disconnected. • Switch the ignition ON (engine off). • Measure the voltage at the following terminals (vehicle wiring harness side). ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A • Is the voltage 0 V?	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. • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC 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 power supply 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 the power supply. Go to Step 9.
7	INSPECT EGR COOLER BYPASS VALVE POSITION SENSOR • Reconnect all the disconnected connectors. • Inspect the EGR cooler bypass valve position sensor. • Is the EGR cooler bypass valve position sensor normal?	Yes	Go to the next step.
7		No	Replace the EGR cooler bypass valve, then go to Step 9.
8	EGR COOLER BYPASS VALVE INSPECTION • Inspect the EGR cooler bypass valve. • Is the EGR cooler bypass valve normal?	Yes	Go to the next step.
8		No	Replace the EGR cooler bypass valve, then go to the next step.
9	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. • Drive the vehicle on flat roads under the following conditions 5 times repeatedly. 1. Idle the engine for 20 s. 2. Accelerate in 2nd gear to 35 km/h and drive the vehicle while maintaining the speed for 25 s. 3. Stop the vehicle and idle the engine for 20 s. 4. Accelerate in 3rd gear to 50 km/h and drive the vehicle while maintaining the speed for 50 s. 5. Stop the vehicle and idle the engine for 20 s. • Stop the engine. • Display the DTCs using the M-MDS. • Has DTC P245B:00 been recorded?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step.
9		No	Go to the next step.
10	VERIFY OTHER DTCs • Has any other DTC or pending code been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
10		No	DTC troubleshooting completed.