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DTC P2458 [MZR-CD (RF Turbo)]

id0102f1841700

DTC P2458 | Diesel particulate filter regeneration duration
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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 8 g/L {0.50 Ib/ft 3}, the PCM determines the diesel particulate filter regeneration duration. Diagnostic support note • The FREEZE FRAME DATA is not available. • The 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 | VERIFY DTC P242F IS STORED • Is the DTC P242F stored in PCM? | Yes | Perform DTC P242F troubleshooting procedure. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Go to the next step.
4 | IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is the FREEZE FRAME DATA present? | Yes | Go to troubleshooting procedures for DTC in FREEZE FRAME DATA. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Go to the next step.
5 | 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 8.
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 | Perform manual diesel particulate filter regeneration again. If the EXHPRESS PID value less than 4.0 kPa {30.0 mmHg} . 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 P2458 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.