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DTC P242F [MZR-CD (RF Turbo)]

id0102f1841300

DTC P242F | Diesel particulate filter restriction-soot accumulation
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DETECTION CONDITION | • The PCM calculates diesel particulate filter soot accumulation based on the exhaust gas pressure sensor signal. If the PCM calculates that soot accumulation amount is more than 11 g/L {0.69 Ib/ft 3}, the PCM determines that the diesel particulate filter soot accumulation excessive. Diagnostic support note • MIL illuminates if PCM detects the above malfunctioning condition in one drive cycle while the DTC for the same malfunction has been stored in the PCM. • FREEZE FRAME DATA is available. • DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Exhaust gas pressure sensor piping restriction and/or damaged • Diesel particulate filter restriction and/or damaged • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has 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 | IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is DTC P242F on FREEZE FRAME DATA? | Yes | Go to the next step.
No | Go to troubleshooting procedures for DTC in FREEZE FRAME DATA. (See DTC TABLE [MZR-CD (RF Turbo)].)
4 | INSPECT EXHAUST GAS PRESSURE SENSOR PIPING • Inspect exhaust pressure piping for restriction and damaged. • Is there any restriction and damaged? | Yes | Repair or replace malfunctioning part, then go to Step 7.
No | Go to the next step.
5 | MONITOR DIESEL PARTICULATE FILTER SOOT ACCUMULATION • Monitor PM_ACC, PM_ACC_DSD and PM_GEN PIDs using the WDS or equivalent. • Is one of the monitored value 15 g/L or more? | Yes | Replace the catalytic converter. Clear the PCM memory. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].) Then go to Step 7.
No | Perform injection amount correction procedure then perform manual diesel particulate filter regeneration procedure. Then go to the next step. (See DIESEL PARTICULATE FILTER REGENERATION [MZR-CD (RF Turbo)].) Note • If any of the below DTCs are stored in the PCM, manual regeneration will be blocked by the PCM. Carry out the appropriate DTCs inspection procedure first.Then, perform manual regeneration procedure again. P0045, P0093, P0097, P0098, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0131, P0132, P0151, P0152, P0154, P0191, P0192, P0193, P0201, P0202, P0203, P0204, P0299, P0301, P0302, P0303, P0304, P0337, P0406, P0500, P0545, P0546, P0548, P0549, P0605, P0606, P0628, P0629, P1378, P1379, P1589, P1675, P1676, P2002, P2032, P2033, P2146, P2147, P2148, P2149, P2228, P2229, P2454, P2455, P2456, P2621, P2622, P242F*, P253F. *:For P242F, manual regeneration will only be blocked if an excessive amount of soot is in the diesel particulate filter.
6 | INSPECT FOR RESTRICTION OR CLOGGED IN DIESEL PARTICULATE FILTER • Start the engine and warm up to normal operation temperature. • Monitor EXHPRESS PID using the WDS or equivalent at idle. • Is the EXHPRESS PID value less than 4.0 kPa {30.0 mmHg}? | Yes | Go to the next step.
No | Visually inspect diesel particulate filter. If damaged or deterioration found, replace the catalytic converter. Clear the PCM memory. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].) Then go to the next step.
7 | VERIFY TROUBLESHOOTING OF DTC P242F COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the engine switch to ON position (engine off). • Clear the DTC from PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present? | Yes | Replace the PCM, go to the next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
8 | VERIFY AFTER REPAIR PROCEDURE • Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.