DTC P2457 Exhaust Gas Recirculation (EGR) Cooling System Performance (4JJ3 with DPD)

1. DTC P2457 description

EGR gas temperature sensor 1 (exhaust manifold side) is installed to the exhaust manifold. EGR gas temperature sensor 1 (exhaust manifold side) measures the exhaust gas temperature at the EGR cooler inlet. EGR gas temperature sensor 2 (EGR valve side) is installed to the EGR valve adapter. EGR gas temperature sensor 2 (EGR valve side) measures the exhaust gas temperature at the EGR cooler outlet. The ECM continually monitors the difference between the temperatures input from both sensors. If the ECM detects that the difference between the temperatures input from both sensors is less than the calculated value, the DTC is set.

2. Condition for setting DTC P2457

Condition for running the DTC

DTCs P003A, P0045, P0048, P0112, P0113, P0117, P0118, P0122, P0123, P0182, P0183, P0241, P0242, P0403, P041C, P041D, P04D0, P04D1, P060B, P0638, P0641, P0651, P0697, P06A3, P06D2, P2227, P2228, P2229, P2453, P2454, P2455, P245C, P245D, U0074, U010A, and U0110 are not set.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P003A Turbocharger Boost Control Solenoid Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0045 Turbocharger Boost Control Solenoid Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0048 Turbocharger Control Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0112 Intake Air Temperature Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0113 Intake Air Temperature Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0117 Engine Coolant Temperature Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0118 Engine Coolant Temperature Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0122 Throttle Position Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0123 Throttle Position Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0182 Fuel Temperature Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0183 Fuel Temperature Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0241 Turbocharger Boost Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0242 Turbocharger Boost Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0403 Exhaust Gas Recirculation (EGR) Motor Control Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P041C Exhaust Gas Recirculation (EGR) Temperature Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P041D Exhaust Gas Recirculation (EGR) Temperature Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P04D0 EGR Cooler Inlet Temperature Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P04D1 EGR Cooler Inlet Temperature Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P060B Internal Control Module A/D Processing Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0638 Throttle Actuator Control Range/Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0641 Sensor Reference Voltage 1 Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0651 Sensor Reference Voltage 2 Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0697 Sensor Reference Voltage 3 Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P06A3 Sensor Reference Voltage 4 Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P06D2 Sensor Reference Voltage 5 Circuit".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2227 Barometric Pressure Circuit Range/Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2228 Barometric Pressure Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2229 Barometric Pressure Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2453 Differential Pressure Sensor Circuit Range/Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2454 Differential Pressure Sensor Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P2455 Differential Pressure Sensor Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P245C Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit Low".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P245D Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit High".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC U0074 Control Module Communication Bus Off - Local CAN".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC U010A Lost Communication With Exhaust Gas Recirculation (EGR) Control Module".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC U0110 Lost Communication with VNT System".

The battery voltage is 10 to 16 V.
The ignition switch is ON.

Also, the following are met for the predetermined time or more:

The EGR valve opening position is 10% or more, and does not change by 10% or more.
The EGR cooler bypass valve is stopped.
The engine speed is 1200 rpm or more and does not change by 1200 rpm or more.
The fuel injection quantity is within the predetermined range and does not change by 5 mm3/st or more.
The boost pressure does not change by 5 kPa {0.7 psi} or more.
The fuel temperature is 150°C {302°F} or less.
The engine coolant temperature is 65℃ {149°F} or more.

Condition for setting the DTC

The ECM detects that the temperature difference between EGR gas temperatures 1 and 2 is less than the calculated value for 4 seconds. (This indicates a reduced EGR cooler performance.)

3. Action taken when DTC P2457 sets

The ECM illuminates the MIL. Refer to Action taken when DTC sets - Type B.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

4. Condition for clearing DTC P2457

Refer to Conditions for clearing the MIL/DTC - Type A or Type B.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".