Volvo

This Diagnostic Trouble Code (DTC) monitors and evaluates malfunctions in the (EGR) Exhaust Gas Recirculation Diff Pressure. A faulty (EGR) Exhaust Gas Recirculation differential Pressure can lead to uneven running and response problems.

Conditions for diagnostic trouble code (DTC):
1) Abnormal sensor signal

Observable symptoms
1) Engine de-rated
2) Exhaust leakage
3) Regeneration may not be possible

Probable cause
1) Connector
2) Wiring harness
3) Clogged ports
4) EGR Cooler
5) EGR system pipe and connections
6) Exhaust leakage, EGR System
7) EGR differential pressure sensor
8) EGR Valve

This Diagnostic Trouble Code (DTC) monitors and evaluates malfunctions in the (EGR) Exhaust Gas Recirculation Diff Pressure. A faulty (EGR) Exhaust Gas Recirculation differential Pressure can lead to uneven running and response problems.

Conditions for diagnostic trouble code (DTC):
1) Abnormal sensor signal

Observable symptoms
1) Exhaust leakage

Probable cause
1) Wiring harness
2) Clogged ports
3) EGR Cooler
4) EGR system pipe and connections
5) EGR differential pressure sensor

Detailed information

Activation
1) The diagnostic trouble code (DTC) is first set after 30?min when driving with varying engine loads
2) At idle the diagnostic trouble code (DTC) is normally not set to active
3) Diagnostic trouble codes (DTCs) are stored for 400 days counted from the first DTC setting occurrence

Deactivation
1) The diagnostic trouble code (DTC) will be shown as inactive when the ignition key is turned to the 0 position
2) To fully verify the repair it may be necessary to activate vehicle functions or perform a test drive

This Diagnostic Trouble Code (DTC) monitors and evaluates malfunctions in the (EGR) Exhaust Gas Recirculation Diff Pressure. A faulty (EGR) Exhaust Gas Recirculation differential Pressure can lead to uneven running and response problems.

Conditions for diagnostic trouble code (DTC):
1) Abnormal system response, most likely low flow

Observable symptoms
1) Possible engine de-rate
2) Exhaust leakage
3) Black smoke

Probable cause
1) Connector
2) Wiring harness
3) Clogged ports
4) EGR Cooler
5) EGR system pipe and connections
6) EGR differential pressure sensor

Detailed information

Activation
1) The diagnostic trouble code (DTC) is first set after 30?min when driving with varying engine loads
2) At idle the diagnostic trouble code (DTC) is normally not set to active

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) Temperature above normal, EGR System

Observable symptoms
1) Engine de-rated

Probable cause
1) Temperature sensor, EGR
2) Insufficient cooling effect, EGR Cooler

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) The sensor value is not within an expected range

Observable symptoms
1) None

Probable cause
1) Sensor
2) Connector
3) Wiring harness

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) EGR temperature after cooler is above range

Observable symptoms
1) Loss of power

Probable cause
1) Extreme driving conditions, EGR Cooler

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) Temperature above normal, EGR System

Observable symptoms
1) Engine de-rated

Probable cause
1) Temperature sensor, EGR

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) EGR temperature after cooler is above range

Observable symptoms
1) Loss of power

Probable cause
1) Extreme driving conditions, EGR Cooler

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EB:48 is less than 0.024?V

Observable symptoms
1) Engine de-rated

Probable cause
1) Connector
2) Temperature sensor, EGR
3) Open circuit, Ground wire
4) Short circuit to higher voltage, Signal wire
5) Wiring harness
6) Engine control module (ECM)