DTC P252F:00 [SKYACTIV-D 1.5]

id0102q2154300

Except European (L.H.D., U.K.) specs.

DTC P252F:00

Engine oil level too high
DETECTION CONDITION
•  The amount of engine oil dilution exceeds 1,661 g {58.59 oz} during the diesel particulate filter regeneration control.
Diagnostic support note
•  This is a continuous monitor (other).
•  The check engine light does not illuminate.
•  FREEZE FRAME DATA/Snapshot data is not available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
Not applicable
POSSIBLE CAUSE
•  Engine oil attenuation by frequently diesel particulate filter regeneration
•  Engine oil data reset procedure does not perform in each engine oil replacements.
•  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 SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT ENGINE OIL LEVEL
•  Inspect the engine oil level.
•  Is the engine oil amount above X line on the dipstick?
Yes
Replace the engine oil.
(See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.5].)
Perform the “ENGINE OIL DATA RESET”, then go to Step 5.
(See ENGINE OIL DATA RESET [SKYACTIV-D 1.5].)
No
Go to the next step.
4
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition off, then ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the PENDING CODE/DTC P253F:00 also present?
Yes
Replace the engine oil.
(See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.5].)
Perform the “ENGINE OIL DATA RESET”, then go to the next step.
(See ENGINE OIL DATA RESET [SKYACTIV-D 1.5].)
No
Go to the next step.
5
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine and warm it up completely.
Caution
•  While performing this step, always operate the vehicle in a safe and lawful manner.
•  When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
•  Drive the vehicle under the FREEZE FRAME DATA/snapshot data condition.
•  Perform the DTC Reading Procedure.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
No
Go to the next step.
6
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.

Note
•  To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”.

Details On DTCs (European (L.H.D., U.K.) specs.)

DESCRIPTION

Engine oil level signal: engine oil level high
DETECTION CONDITION
Determination conditions
•  Oil level increased above or near X mark.
Preconditions
•  Engine speed: 750—3,000 rpm
•  Vehicle speed: 5 km/h {4 mph} or more
•  Engine oil control: during low oil pressure
•  Engine oil temperature: 20—120 °C {68—248 °F}
•  The following DTC is not detected:
―  Communication error between engine oil level sensor and PCM: U1100:00
―  Engine oil level sensor malfunction: P250A:00
―  Engine oil level sensor power supply circuit: P250C:00
Drive cycle
•  1
Self test type
•  CMDTC self test
Sensor used
•  PCM
•  Engine oil level sensor
•  Engine oil temperature sensor
•  Low-G sensor
FAIL-SAFE FUNCTION
•  Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT
•  Wrench indicator light is illuminated
POSSIBLE CAUSE
•  Improper engine oil level (high)
•  Engine oil attenuation by frequently diesel particulate filter regeneration
•  Engine oil level sensor malfunction
―  Clogging of oil passage to engine oil level sensor detection area
―  Engine oil level sensor internal application specific integrated circuit malfunction
•  Erratic signal to PCM
―  Engine oil level sensor connector or terminals malfunction
―  Open or short circuit in wiring harness between engine oil level sensor terminal C and PCM terminal 1Q
•  PCM malfunction


System Wiring Diagram

•  Not applicable

Function Explanation (DTC Detection Outline)

•  The PCM monitors the oil level while the above preconditions are being met and if the traveled distance is 100 km {62.2 mph} or more or the monitoring time is 300 s or more, it calculates the average oil level.
•  If the averaged oil level is near the X mark two times in a row, the PCM stores a DTC and turns on the wrench indicator light in the instrument cluster.

Repeatability Verification Procedure

1.  Move the vehicle to a level area and switch the ignition ON.
2.  Verify engine oil level using the dipstick (verify that it is near the X mark).

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

Item
Definition
Unit
Condition/Specification
EOL
Engine oil level
mm, in
•  Displays the engine oil level.

Function Inspection Using M-MDS

STEP

INSPECTION

ACTION
1
PURPOSE: VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
2
PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
•  Is the DTC P252F:00 on FREEZE FRAME DATA?
Yes
Go to the next step.
No
Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA.
(See DTC TABLE [SKYACTIV-D 1.5].)
3
PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (misfire related) on the repair order.
—
Go to the next step.
4
PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY OTHER RELATED DTCs OCCURRING
•  Switch the ignition off, then ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the other PENDING CODE/DTC also present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-D 1.5].)
No
Go to the next step.
5
PURPOSE: VERIFY IF THERE IS PID ITEM CAUSING DRASTIC CHANGES OF ACCELERATION FLUCTUATION BY INPUT SIGNAL TO PCM
•  Access the following PIDs using the M-MDS:
PCM:
―  EOL
•  Is there any signal that is far out of specification?
Yes
Go to the next step.
No
Go to the troubleshooting procedure to perform the procedure from Step 1.
6
PURPOSE: VERIFY CONNECTOR CONNECTIONS
•  Access the following PIDs using the M-MDS:
PCM:
―  EOL
•  When the following parts are shaken, does the PID value include a PID item which has changed?
―  Engine oil level sensor
―  PCM
Yes
Repair or replace the applicable connector parts.
Go to the troubleshooting procedure to perform the procedure from Step 3.
No
Go to the troubleshooting procedure to perform the procedure from Step 1.


Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure
•  Step 1
―  Perform inspection of engine oil level.
•  Step 2
―  Inspect for clogging of the oil passage to the engine oil level sensor detection area.
•  Step 3—4
―  Verify that the primary malfunction is resolved and there are no other malfunctions.

STEP

INSPECTION

ACTION
1
PURPOSE: INSPECT ENGINE OIL LEVEL
•  Inspect the engine oil level.
•   Is the engine oil amount above X line on the dipstick?
Yes
Replace the engine oil.
(See ENGINE OIL REPLACEMENT [SKYACTIV-D 1.5].)
Perform the “ENGINE OIL DATA RESET”, then go to Step 3.
(See ENGINE OIL DATA RESET [SKYACTIV-D 1.5].)
No
Go to the next step.
2
PURPOSE: INSPECT FOR CLOGGING OF THE OIL PASSAGE TO THE ENGINE OIL LEVEL SENSOR DETECTION AREA
•  Remove the engine oil level sensor.
•  Visually inspect the oil passage to the engine oil level sensor.
•  Is there any restriction detected?
Yes
Clean the oil passage, then go to the next step.
No
Replace the engine oil level sensor, then go to the next step.
(See ENGINE OIL LEVEL SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
3
PURPOSE: PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS PCM
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Implement the repeatability verification procedure.
•  Perform the DTC Reading Procedure.
•  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.
4
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.