DTC P2BA9:00 [PCM (SKYACTIV-D 2.2)]

id0102j5730000

DTC P2BA9:00

NOx exceedence - Insufficient reagent quality
DETECTION CONDITION
•  With the following preconditions met, the average AdBlue® concentration is less than 22.5% or a AdBlue® quality sensor detection value error continues for 10 min.
MONITORING CONDITIONS
•  Communication between dosing control unit and urea level sensor: Normal
•  Communication between dosing control unit and PCM: Normal
•  Urea temperature sensor: Normal
•  Temperature sensor in Urea quality sensor: Normal
•  AdBlue® amount detected by urea level sensor: Normal range
•  The following DTCs are not detected in the PCM or EACM:
―  Urea temperature sensor/Urea level sensor: P203B:00, P203C:00, P203D:00
―  Urea temperature sensor: P205A:00, P205B:00
―  Urea quality sensor: P206C:00, P206D:00, P207F:00, P21CE:00
―  AdBlue® amount: P203F:00
―  CAN: U02A2:00, U010E:00
Diagnostic support note
•  This is an intermittent monitor (Other).
•  The check engine light does not illuminate.
•  FREEZE FRAME DATA is not available.
•  Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE
•  The instrument cluster warns the driver with the following functions.
―  Selective catalytic reduction (SCR) system warning light
―  Buzzer
―  Message
Note
•  The remaining distance to empty is a maximum of 700 km {435 mile} until the malfunction targeted by inducement (laws and regulations requirement) is repaired. This distance is displayed in the instrument cluster and counts down until the targeted malfunction is repaired.
•  Perform the following restrictions while driving the vehicle according to the remaining distance to empty.
―  700 to 650 km {435 to 404 miles}: No restriction
―  650 to 0 km {404 to 0 miles}: Maximum vehicle speed is restricted from 80 to 50 km/h{50 to 31 mph}
―  0 km {0 miles}: Engine speed is fixed at idle speed
POSSIBLE CAUSE
•  Communication error between the following:
―  Urea quality sensor—Dosing control unit
―  Dosing control unit—PCM
•  Urea level sensor malfunction
•  Mistaken replenishment of liquid other than AdBlue® such as water and diesel fuel
•  Urea quality sensor malfunction
•  AdBlue® deterioration
•  PCM malfunction
•  Dosing control unit malfunction
SYSTEM WIRING DIAGRAM
•  Not applicable

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION
1
RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the snapshot data on the repair order.
—
Go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Bulletins and/or on-line repair information availability.
•  Is any related Service 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
VERIFY DOSING CONTROL UNIT RELATED DTC
•  Retrieve dosing control unit and PCM DTCs using the M-MDS.
•  Has a DTC related to the following parts been output?
―  Communication error between the Urea quality sensor and Dosing control unit
―  Communication error between the dosing control unit and PCM
―  Urea level sensor
―  Urea quality sensor
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
No
Go to the next step.
4
INSPECT UREA LEVEL SENSOR
•  Inspect the urea level sensor.
•  Is there any malfunction?
Yes
Replace the urea level sensor/urea temperature sensor/urea tank heater, then go to the Step 7.
(See UREA LEVEL SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
5
VERIFY THAT AdBlue® HAS NOT BEEN MIXED WITH DIESEL FUEL
•  Verify the condition of the AdBlue® drained from the urea tank in Step 4.
•  Is there any evidence of diesel fuel in the AdBlue®?
Yes
Replace the AdBlue®, then go to Step 7.
(See AdBlue® REPLACEMENT [SKYACTIV-D 2.2].)
No
Go to the next step.
6
DETERMINE IF MALFUNCTION CAUSE IS UREA QUALITY SENSOR, AdBlue® DETERIORATION, OR WATER PENETRATION INTO AdBlue®
•  Replace the AdBlue®.
•  Inspect the Urea quality sensor.
•  Is there any malfunction?
Yes
Replace the Urea quality sensor, then go to the next step.
(See UREA QUALITY SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Malfunction is caused by AdBlue® deterioration or water penetration into the AdBlue®.
Go to the next step.
7
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the followings:
―  Fill up with the appropriate AdBlue®
―  Park the vehicle on level ground.
―  Switch the ignition ON (engine off).
―  Wait for 10 min with the AdBlue® temperature (PID: S_UR_TANK_TMP) at -3 °C {26.6 °F} or more.
•  Verify the instrument cluster display content.
•  Verify that there is no warning message indicating that there is a low level of AdBlue® in the multi-information display.
Note
•  Switch the ignition from ON (engine off) to OFF and then switch it ON (engine off) again to cancel the vehicle speed restriction.
•  Switch the ignition off.
•  Switch the ignition ON (engine off).
•  Are SCR system related warnings displayed in the instrument cluster?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
Go to the next step.
No
Go to the next step.
8
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
No
DTC troubleshooting completed.