#
DTC P2428 [MZR-CD (RF Turbo)]

id0102f1032000

DTC P2428 | Exhaust gas temperature too high
--- | ---
DETECTION CONDITION | • The PCM monitors the diesel particulate filter temperature using the exhaust gas temperature sensor middle and lower signal after the diesel particulate filter regeneration procedure. If the PCM detects the exhaust gas temperature more than 1,000 °C {1,832 °F}, the PCM determines that the exhaust gas temperature too high. Diagnostic support note • The FREEZE FRAME DATA is not available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Exhaust gas temperature sensor (middle) malfunction • Exhaust gas temperature sensor (lower) malfunction • Diesel particulate filter malfunction • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
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 OTHER STORED DTCS • Connect the WDS or equivalent to DLC-2. • Turn the engine switch to ON position. • Retrieve the stored DTC. • Is the DTC P2458 or P242F displayed? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Go to the next step.
4 | INSPECT EXHAUST GAS PRESSURE SENSOR HOSE CONNECTION • Visually inspect the exhaust gas pressure sensor hose connection. • Are the hoses connected properly? | Yes | Go to the next step.
No | Reconnect hoses properly, then go to the next step.
5 | INSPECT CHARACTER FOR SENSORS • Inspect character for following sensors. - Exhaust gas temperature sensors (upper, middle, lower) - Exhaust gas pressure sensor - A/F sensor • Are characters normal? | Yes | Go to the next step.
No | Replace the abnormal part. Perform the fuel injection learning, then go to Step14. (See Injection amount correction.)
6 | INSPECT ENGINE COMPRESSION • Inspect engine compression. (See COMPRESSION INSPECTION [MZR-CD (RF Turbo)].) • Is it normal? | Yes | Go to the next step.
No | Perform engine overhaul for repairs, then go to the next step.
7 | VISUALLY INSPECT CKP SENSOR • Visually inspect for CKP sensor and CKP sensor pulse wheel. • Is there any problem? | Yes | Repair or replace suspected part. Perform the fuel injection learning, then go to Step14. (See Injection amount correction.)
No | Go to the next step.
8 | INSPECT EGR VALVE OPERATION • Perform EGR Valve Operation Inspection. (See EGR Valve Operation Inspection.) • Does the EGR valve work properly? | Yes | Go to the next step.
No | Repair or replace malfunctioning part according to inspection results. Perform the fuel injection learning, then go to Step14. (See Injection amount correction.)
9 | VISUALLY INSPECT A/F SENSOR AND EXHAUST GAS TEMPERATURE SENSOR (LOWER) • Remove and visually inspect the A/F sensor and exhaust gas temperature sensor (lower). • Is there any white or melted on tip? | Yes | Replace suspect sensor, then go to the next step.
No | Perform the fuel injection learning, then go to Step14. (See Injection amount correction.)
10 | VISUALLY INSPECT DIESEL PARTICULATE FILTER • Visually inspect the diesel particulate filter. • Is there any damaged or deterioration (white)? | Yes | Replace the diesel particulate filter, then go to the next step. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Perform the fuel injection learning, then go to Step14. (See Injection amount correction.)
11 | PERFORM DIESEL PARTICULATE FILTER REPLACE RELATED PROCEDURE • Perform the following; 1. Diesel particulate filter data reset 2. KOEO self-test 3. Diesel particulate filter reset 4. Injection amount correction 5. Diesel particulate filter manual regeneration procedure | - | Go to the next step.
12 | RETRIEVE DTC • Retrieve any DTC using the WDS or equivalent. • Is DTC P2428 detected? | Yes | Go to the Step 1.
No | Go to the next step.
13 | PERFORM DIESEL PARTICULATE FILTER ASSESSMENT • Perform "DIESEL PARTICULATE FILTER ASSESSMENT". (See DIESEL PARTICULATE FILTER ASSESSMENT [MZR-CD (RF Turbo)].) | - | Go to the next step.
14 | VERIFY TROUBLESHOOTING OF DTC P2428 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.
15 | 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.