DTC P244D:00, P244D:68 [MZ-CD 1.6]

id0102g8545100

DTC P244D:00

DTC P244D:68

Exhaust temperature too high for diesel particulate filter regeneration
DETECTION CONDITION
•  The PCM monitors the exhaust gas temperature during diesel particulate filter regeneration using the temperature sensor signal. If the temperature during diesel particulate filter regeneration is as follows for 5 s, the PCM determines that the exhaust gas temperature is high.
―  Exhaust gas temperature at upstream of diesel particulate filter exceeds 999.96 °C {1,831.9 °F}
―  Exhaust gas temperature at downstream of diesel particulate filter exceeds 800.96 °C {1,473.7 °F}
Note
•  If the detection condition continues, the PCM performs the following controls to prevent a vehicle fire.
―  If continues for 40 s, forces the engine to misfire.
―  If continues for 60 s, forces the engine to stop.
•  When DTC P244D:00 is set, the PCM inhibits engine starting.
POSSIBLE CAUSE
•  Wrong fuel (such as petrol or ethanol)
•  Engine oil deterioration
•  Excessive accumulation of soot in diesel particulate filter
•  Catalyst exhaust gas temperature sensor No.1 malfunction
•  Catalyst exhaust gas temperature sensor No.2 malfunction
•  FUEL INJECTOR CORRECTION FACTORS improperly
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related service 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
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition to off, then to ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the following PENDING CODE/DTC also present?
―  P2032:00, P2033:00
Yes
Go to the applicable DTC inspection.
(See DTC P2032:00 [MZ-CD 1.6].)
(See DTC P2033:00 [MZ-CD 1.6].)
No
Go to the next step.
4
FUEL INSPECTION
•  Inspect the fuel.
•  Is it diesel fuel?
Yes
Go to the next step.
No
Drain the fuel from the tank and refill with diesel fuel.
Then go to step 9.
Note
•  When wrong fuel has been used, the diesel particulate filter should be checked for damage.
5
ENGINE OIL INSPECTION
•  Inspect the engine oil.
•  Is the engine oil normal?
Yes
Go to the next step.
No
Replace the engine oil.
(See ENGINE OIL REPLACEMENT [MZ-CD 1.6].)
Then go to Step 9.
6
PERFORM DIESEL PARTICULATE FILTER STATIC REGENERATION
•  Cool down the engine.
•  Perform the “EXHAUST GAS TEMPERATURE VALUE RESET“.
•  Clear the DTC from the PCM memory using the M-MDS.
Note
•  If the engine misfires or stops during diesel particulate filter static regeneration, go to the next step.
•  Perform the DIESEL PARTICULATE FILTER STATIC REGENERATION.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Go to the next step.
No
Go to Step 10.
7
PERFORM FUEL INJECTOR CORRECTION FACTORS
•  Cool down the engine.
•  Perform the “EXHAUST GAS TEMPERATURE VALUE RESET“.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the FUEL INJECTOR CORRECTION FACTORS.
Note
•  If the engine misfires or stops during diesel particulate filter static regeneration, go to the next step.
•  Perform the DIESEL PARTICULATE FILTER STATIC REGENERATION.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Go to the next step.
No
Go to Step 10.
8
VISUALLY INSPECT DIESEL PARTICULATE FILTER FOR RESTRICT AND DAMAGE
•  Cool down the engine.
•  Remove the catalytic converter.
•  Visually inspect the diesel particulate filter.
•  Is there any restrict or damage?
Yes
Replace the catalytic converter, then go to the next step.
(See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZ-CD 1.6].)
No
Go to the next step.
9
VERIFY THAT DTC P244D:00, P244D:68 TROUBLESHOOTING IS COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Perform the “EXHAUST GAS TEMPERATURE VALUE RESET“.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  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.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the after repair procedure.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
No
DTC troubleshooting completed.