DTC P045B:00 [SKYACTIV-D 1.5]

id0102q2859900

DTC P045B:00

Low pressure EGR valve control: high duty malfunction
DETECTION CONDITION
•  The LP-EGR control valve drive current exceeds the specification or the LP-EGR control valve drive circuit temperature is 175 °C {347 °F} or more for a countinuous 2 s when the following condition is met.
MONITORING CONDITIONS
―  PCM internal processor malfunction DTC P0606:00 not detected.
Diagnostic support note
•  This is an intermittent monitor (EGR system).
•  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
•  PCM restricts engine torque.
•  Inhibits the EGR control.
•  Inhibits the auto DPF regeneration control.
•  Inhibits the compulsory DPF regeneration control.
•  Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE
•  Low pressure EGR valve connector or terminals malfunction
•  PCM connector or terminals malfunction
•  Low pressure EGR valve position sensor (built-into low pressure EGR valve) malfunction
•  PCM malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture of the PC function.
•  Record the freeze frame data/snap shot data.
—
Go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related Service Bulletins and/or on-line repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT LOW PRESSURE EGR VALVE CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the low pressure EGR valve connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 6.
No
Go to the next step.
4
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 6.
No
Go to the next step.
5
INSPECT LOW PRESSURE EGR VALVE POSITION SENSOR
•  Reconnect all disconnected connectors.
•  Inspect the low pressure EGR valve position sensor.
•  Is there any malfunction?
Yes
Replace the low pressure EGR valve, then go to the next step.
(See LP-EGR CONTROL VALVE POSITION SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
No
Go to the next step.
6
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOER self test.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
7
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-D 1.5].)
No
DTC troubleshooting completed.