DTC P244A:00 [SKYACTIV-D 1.5]

id0102q2058900

DTC P244A:00

Exhaust gas pressure sensor No.2 range/performance problem
DETECTION CONDITION
•  With the following conditions met, a condition has continued for 7 s in which the difference in the pressure before and after passing the diesel particulate filter is less than the specified value.
MONITORING CONDITIONS
―  Battery voltage: 8—20 V
―  0.5 s have elapsed after the ignition was switched ON (engine on)
―  The following conditions continue for 3 s:
•  Engine speed: 825 rpm or more
•  Amount of exhaust gas: 2.5 m3/min or more
•  Change in exhaust gas amount: 0.03 m3/min or less within 0.016 s
•  Exhaust gas temperature detected by exhaust gas temperature sensors No.2 and No.3: 500 °C {932 °F} or less
•  Estimated exhaust gas temperature after passing through diesel particulate filter: 500 °C {932 °F} or less
•  PM accumulation amount: 1.5 g/l {0.094 lb/ft3} or more
Diagnostic support note
•  This is an intermittent monitor (diesel particulate filter 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 auto DPF regeneration control.
•  Inhibits the compulsory DPF regeneration control.
•  Inhibits the EGR control.
•  Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE
•  Erratic signal to PCM
―  Exhaust gas pressure sensor No.2 signal malfunction
―  Input signal part connector or terminals malfunction
―  Input signal part related circuit malfunction
•  Exhaust gas leakage from exhaust system
•  Pipe between exhaust gas pressure sensor No.2 and catalytic converter (diesel particulate filter) restriction and/or damaged or improper routing
•  Exhaust gas pressure sensor No.2 malfunction
•  Catalytic converter (diesel particulate filter) or diesel particulate filter malfunction (deformation, damage)
•  PCM malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic Procedure

STEP

INSPECTION

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 FREEZE FRAME DATA/snapshot data on the repair order.
—
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
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.
•  Are any other PENDING CODEs and/or DTCs present?
Yes
Go to the applicable PENDING CODE or DTC inspection.
(See DTC TABLE [SKYACTIV-D 1.5].)
No
Go to the next step.
4
VERIFY CURRENT INPUT SIGNAL STATUS
•  Start the engine.
•  Access the following PID using the M-MDS:
―  EXHPRESS_DIF
•  Is the PID value within specification?
Yes
Go to the next step.
No
Inspect the suspected sensor and related wiring harness.
•  If there is any malfunction:
―  Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.
•  If there is no malfunction:
―  Go to the next step.
5
INSPECT EXHAUST SYSTEM FOR LEAKAGE
•  Visually inspect for exhaust gas leakage from the exhaust system.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.
No
Go to the next step.
6
INSPECT EXHAUST GAS PRESSURE SENSOR NO.2 RELATED PIPE
•  Visually inspect the exhaust gas pressure sensor No.2 related pipe for restriction, damaged and improper routing.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.
No
Go to the next step.
7
INSPECT EXHAUST GAS PRESSURE SENSOR NO.2
•  Reconnect all disconnected connectors.
•  Inspect the exhaust gas pressure sensor No.2.
•  Is there any malfunction?
Yes
Replace the exhaust gas pressure sensor No.2, then go to the next step.
(See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
No
Catalytic converter (diesel particulate filter) or diesel particulate filter can be considered the cause.
•  Replace the catalytic converter (diesel particulate filter), then go to the next step.
8
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Access the EXHPRESS_DIF PID using the M-MDS.
•  Start the engine.
•  Race the engine at 3,500 rpm or more for 1 min.
•  Verify that the EXHPRESS_DIF monitor value is 0.2 kPa {0.002 kgf/cm2, 0.03 psi} or more.
•  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.
9
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.