Volvo All Engines (2010 Emissions) Fault Code: SPN 1761 FMI 18 PID: PPID 278 Aftertreatment Diesel Exhaust Fluid (DEF) – Moderately Severe Level

Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor has an indicator lamp and gauge in the instrument cluster. A solid lamp comes on when there is approximately 16% DEF remaining in the tank. A flashing lamp indicates when there is approximately 4% DEF remaining in the tank. A 25% engine derate is possible if the DEF is not refilled above the red line on the gauge at the next engine start up.

Conditions for diagnostic trouble code (DTC):
1) Low signal voltage from sensor

Observable symptoms
1) No aftertreatment diesel exhaust fluid (DEF) dosage
2) Engine de-rated (25%)

Probable cause
1) Empty tank
2) Connector
3) Wiring harness
4) Aftertreatment diesel exhaust fluid (DEF) tank, Level Sensor

Detailed information
1) Aftertreatment diesel exhaust fluid (DEF) tank Low Level Indicator (Flashing)