Volvo

This fault indicates failure of the combustion flame to ignite. When aftertreatment diesel particulate filter (DPF) regeneration is active the aftertreatment control module (ACM) activates the ignition coil, aftertreatment DPF atomization module and air valves in order to create a flame in the aftertreatment DPF combustion chamber. The flame temperature is monitored continually by the ACM. To verify combustion the ACM measures the rise in flame temperature during the first 10 seconds of combustion. If proper combustion during the first 10 seconds of operation is not achieved the fault will be set.

Conditions for diagnostic trouble code (DTC):
1) Lost flame

Observable symptoms
1) Regeneration aborted

Probable cause
1) Aftertreatment Hydrocarbon Doser

This diagnostic trouble code (DTC) indicates malfunction at the aftertreatment diesel particulate filter (DPF) flame temperature sensor. This aftertreatment DPF flame temperature sensor is used to measure engine exhaust gas temperature (EGT) within the flame region of the aftertreatment DPF during aftertreatment DPF regeneration. The aftertreatment control module (ACM) monitors this temperature to detect the existence of the flame. Diagnostic trouble codes (DTCs) may result if the system is unable to light the flame or if there are multiple flame losses. Aftertreamemt DPF regeneration will be prevented until the system is sufficiently warmed-up for the specified duration.

Conditions for diagnostic trouble code (DTC):
1) **Flame Temperature Sensor is not within expected range**

Observable symptoms
1) Regeneration aborted

Probable cause
1 )Flame temperature sensor
2) Exhaust system leakage
3) Exhaust Gas Temperature (EGT) Sensor
4) Basic checks
5) The recommendation is to perform the following checks before any further fault tracing is performed

This diagnostic trouble code (DTC) indicates malfunction at the aftertreatment diesel particulate filter (DPF) flame temperature sensor. This aftertreatment DPF flame temperature sensor is used to measure engine exhaust gas temperature (EGT) within the flame region of the aftertreatment DPF during aftertreatment DPF regeneration. The aftertreatment control module (ACM) monitors this temperature to detect the existence of the flame. Diagnostic trouble codes (DTCs) may result if the system is unable to light the flame or if there are multiple flame losses. Aftertreamemt DPF regeneration will be prevented until the system is sufficiently warmed-up for the specified duration.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EB:27 is less than 0.17?V

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) High fuel consumption
2) Engine fan constantly engaged

Probable cause
1) Engine coolant temperature sensor
2) Short circuit to ground
3) Connector
4) Wiring harness
5) Engine control module (ECM)

This diagnostic trouble code (DTC) indicates malfunction at the aftertreatment diesel particulate filter (DPF) flame temperature sensor. This aftertreatment DPF flame temperature sensor is used to measure engine exhaust gas temperature (EGT) within the flame region of the aftertreatment DPF during aftertreatment DPF regeneration. The aftertreatment control module (ACM) monitors this temperature to detect the existence of the flame. Diagnostic trouble codes (DTCs) may result if the system is unable to light the flame or if there are multiple flame losses. Aftertreamemt DPF regeneration will be prevented until the system is sufficiently warmed-up for the specified duration.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EB:27 is less than 0.17?V

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) High fuel consumption
2) Engine fan constantly engaged

Probable cause
1) Engine coolant temperature sensor
2) Short circuit to ground
3) Connector
4) Wiring harness
5) Engine control module (ECM)

The function identifies and indicates malfunction of the aftertreatment diesel particulate filter (DPF) by analyzing the pressure drop over the aftertreatment DPF. This is done by making a check for deviation between sensor value and a model pressure drop. In some extreme cases the engine will derate.

Conditions for diagnostic trouble code (DTC):
1) High differential pressure across the filter (> 35 kPa (5 psi / 10.3 in-Hg))

Observable symptoms
1) Low Power
2) Medium to high derate

Probable cause
1) Excessive smoke from the engine
2) Aftertreatment diesel particulate filter (DPF) is loaded with soot
3) Aftertreatment diesel particulate filter (DPF) is loaded with ash
4) Incomplete regeneration, driver has not allowed regeneration to complete
5) Regeneration inhibited, driver has not allowed regeneration to take place
6) Charge air system leakage
7) EGR System Faulty
8) Aftertreatment DPF Differential Pressure Sensor

The function identifies and indicates malfunction of the aftertreatment diesel particulate filter (DPF) by analyzing the pressure drop over the aftertreatment DPF. This is done by making a check for deviation between sensor value and a model pressure drop. In some extreme cases the engine will derate.

Conditions for diagnostic trouble code (DTC):
1) High differential pressure across the filter (> 30 kPa (4.4 psi / 8.8 in-Hg))

Observable symptoms
1) Low Power
2) Medium to high derate

Probable cause
1) Excessive smoke from the engine
2) Aftertreatment diesel particulate filter (DPF) is loaded with soot
3) Aftertreatment diesel particulate filter (DPF) is loaded with ash
4) Incomplete regeneration, driver has not allowed regeneration to complete
5) Regeneration inhibited, driver has not allowed regeneration to take place
6) Charge air system leakage
7) EGR System Faulty
8) Aftertreatment DPF Differential Pressure Sensor

The function identifies and indicates malfunction of the aftertreatment diesel particulate filter (DPF) by analyzing the pressure drop over the aftertreatment DPF. This is done by making a check for deviation between sensor value and a model pressure drop. In some extreme cases the engine will derate.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A137:26 is more than 4.75?V

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) Regeneration not possible

Probable cause
1) Connector
2) Open circuit, Ground wire
3) Short circuit to 5V, Signal wire
4) Short circuit to battery voltage, Signal wire
5) Wiring harness
6) Aftertreatment DPF Differential Pressure Sensor
7) Aftertreatment Control Module (ACM)