| DTC Code | DTC Name |
|---|---|
| P200C | Diesel Particulate Filter Over Temperature Bank 1 |
| P200E | Catalyst System Temperature Too High Bank 1 |
| P2428 | Exhaust Gas Temperature Too High Bank 1 |
DESCRIPTION
The exhaust fuel addition injector assembly is mounted on the exhaust manifold, and low pressure fuel is supplied to the exhaust fuel addition injector assembly by the feed pump in the supply pump assembly. The exhaust fuel addition injector assembly adds fuel in response to a control signal from the ECM, in order to perform PM forced regeneration.
During PM forced regeneration, the exhaust fuel addition injector assembly adds fuel to raise the DPF* catalyst temperature.
*: Diesel Particulate Filter
For more information on the exhaust fuel addition injector assembly and DPF catalyst, refer to the following procedures.
If DTC P200C, P200E and P2428 are present, refer to the diagnostic trouble code (DTC) chart for Diesel Particulate Filter System.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
|---|---|---|---|---|---|
| P200C | Diesel Particulate Filter Over Temperature Bank 1 | The value of "Exhaust Temperature B1S3" is higher than 1000°C (1832°F) for 5 seconds (1 trip detection logic). |
|
Comes on | DTC stored |
| P200E | Catalyst System Temperature Too High Bank 1 | The value of "Exhaust Temperature B1S2" is higher than 1000°C (1832°F) for 5 seconds (1 trip detection logic). |
|
Comes on | DTC stored |
| P2428 | Exhaust Gas Temperature Too High Bank 1 | The value of "Exhaust Temperature B1S1" is higher than 1000°C (1832°F) for 5 seconds (1 trip detection logic). |
|
Comes on | DTC stored |
Due to fail-safe operation when other DTCs (that involve the engine power limit) are stored, PM forced regeneration may be prohibited.
This DTC or P20CF, P244B, P0240 and P2463 may be stored due to the fact that PM forced regeneration is prohibited due to the fail-safe operation of other DTCs.
The air fuel ratio and the exhaust gas temperature can be checked by entering the following menus on the GTS: Powertrain / Engine and ECT / Data List / Diesel Exhaust / AF Lambda B1S1, Exhaust Temperature B1S1, Exhaust Temperature B1S2 and Exhaust Temperature B1S3.
Malfunctions in the engine itself may affect the DPF system control and cause storage of this DTC. For example, malfunctions in the injector assemblies that cause a large amount of smoke emission: These affect the exhaust fuel addition injector assembly operation. Blockages or leaks in the air intake system, or an EGR system malfunction such as EGR passage blockages: These malfunctions affect the DPF catalyst temperature control. Therefore, the engine condition itself should also be checked, in addition to the exhaust fuel addition injector assembly.
| DTC No. | Data List |
|---|---|
| P200C |
|
| P200E | |
| P2428 |
MONITOR DESCRIPTION
The ECM monitors DPF catalyst temperature. When the temperature becomes high due to uncombusted fuel, engine oil or thermal degradation to the DPF catalyst, the ECM illuminates the MIL.
CONFIRMATION DRIVING PATTERN
| DTC No. | DTC Detection Drive Pattern |
|---|---|
| P200C | PM forced regeneration* *: When P200C is detected due to a DPF catalyst problem such as thermal degradation, because the malfunction cannot be duplicated even if the vehicle is driven after PM forced regeneration is performed, perform troubleshooting by following the diagnosis procedure and checking the freeze frame data. |
| P200E | PM forced regeneration* *: When P200E is detected due to a DPF catalyst problem such as thermal degradation, because the malfunction cannot be duplicated even if the vehicle is driven after PM forced regeneration is performed, perform troubleshooting by following the diagnosis procedure and checking the freeze frame data. |
| P2428 | PM forced regeneration* *: When P2428 is detected due to a DPF catalyst problem such as thermal degradation, because the malfunction cannot be duplicated even if the vehicle is driven after PM forced regeneration is performed, perform troubleshooting by following the diagnosis procedure and checking the freeze frame data. |
CAUTION / NOTICE / HINT
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
After replacing an injector assembly, the ECM needs registration.
Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
PROCEDURE
READ DTC OUTPUT (RECORD STORED DTC AND FREEZE FRAME DATA (PROCEDURE 1))
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Record the stored DTC and freeze frame data.
| Result | ||
|---|---|---|
|
REPLACE EXHAUST GAS TEMPERATURE SENSOR
Check the values of "Exhaust Temperature B1S1", "Exhaust Temperature B1S2" and "Exhaust Temperature B1S3" that were saved in Procedure 1.
| Result | Items to be Replaced |
|---|---|
| DTC P2428 is output and the value of "Exhaust Temperature B1S1" is 850°C (1562°F) or higher | Exhaust gas temperature sensor (B1S1) |
| DTC P200E is output and the value of "Exhaust Temperature B1S2" is 850°C (1562°F) or higher | No. 2 exhaust gas temperature sensor (B1S2) |
| DTC P200C is output and the value of "Exhaust Temperature B1S3" is 850°C (1562°F) or higher | No. 3 exhaust gas temperature sensor (B1S3) |
If DTC P200C, P200E and/or P2428 is output, the exhaust gas temperature sensors need to be replaced. However, make sure to perform all diagnostic procedures for P200C, P200E and/or P2428 before replacing the exhaust gas temperature sensors.
If the exhaust gas temperature sensors are subjected to an abnormally high temperature, the internal resistance of the sensor increases. This causes incorrect temperature measurement.
| Result | ||
|---|---|---|
|
CHECK FOR BLACK SMOKE
Start the engine and drive the vehicle until the engine coolant temperature reaches 75°C (167°F) or higher.
Stop the vehicle and allow the engine to idle.
Fully depress the accelerator pedal for 5 seconds, and then release it [A].
Repeat the procedure [A] 10 times [B].
Check for black smoke emission during the procedure [A] and [B].
| OK |
|---|
| Black smoke is emitted less than 5 times. |
Even if the black smoke is very thin, count the number of black smoke emissions if there is any visible smoke.
| Result | |||
|---|---|---|---|
|
GO TO STEP 5
REPLACE EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY
Even though it has been determined that the DPF Exhaust manifold converter sub-assembly (DPF catalyst) needs to be replaced, make sure to perform all diagnostic procedures for DTC P200C, P200E and/or P2428 before replacing it.
This DTC is stored because an excessive amount of PM has accumulated and resulted in abnormal combustion. It is necessary to diagnose the cause of abnormal PM accumulation and repair the problem. Therefore, do not perform replacement at this time.
| Result | ||
|---|---|---|
|
CHECK FUEL INJECTION SYSTEM
Check the fuel injection system.
| Result | ||
|---|---|---|
|
CHECK INTAKE / EXHAUST SYSTEM
Check the intake/exhaust system.
| Result | ||
|---|---|---|
|
CHECK AFTER TREATMENT CONTROL SYSTEM
Check the after treatment control system.
| Result | ||
|---|---|---|
|
REPLACE MALFUNCTIONING PARTS
Replace the following items only when it has been determined necessary based on diagnosis for DTC P200C, P200E and/or P2428.
Replace the exhaust manifold converter sub-assembly.
Perform Initialization procedure for Catalyst Record Clear and DPF Deterioration Record Clear.
Replace the exhaust gas temperature sensor (B1S1).
Replace the No. 2 exhaust gas temperature sensor (B1S2).
Replace the No. 3 exhaust gas temperature sensor (B1S3).
| Result | ||
|---|---|---|
|
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
Connect the GTS to the DLC3.
Turn the ignition switch ON and turn the GTS on.
Clear the DTCs.
Warm up the engine (engine coolant temperature is 75°C (167°F) or higher).
Perform PM forced regeneration.
| Result | ||
|---|---|---|
|
END