The ambient air temperature signal is sent to the instrument cluster module. The instrument cluster module then transmits the ambient air temperature data to the Engine Control Module (ECM) via the J1939 data lines.
Probable cause
1) Ambient temperature below -30??C (-22??F)
2) Wiring harness
3) Faulty sensor
Volvo All Engines (2010 Emissions) Fault Code: SPN 171 FMI 19 PID: 171 Ambient Air Temperature
Volvo All Engines (2010 Emissions) Fault Code: SPN 171 FMI 14 PID: Ambient Air Temperature
Volvo All Engines (2010 Emissions) Fault Code: SPN 171 FMI 13 PID: Ambient Air Temperature
Volvo All Engines (2010 Emissions) Fault Code: SPN 171 FMI 12 PID: 171 Ambient Air Temperature
Volvo All Engines (2010 Emissions) Fault Code: SPN 1677 FMI 16 PID: PSID 25 Aftertreatment DPF Auxillary Heater Mode – Moderately Severe Level
Volvo All Engines (2010 Emissions) Fault Code: SPN 1677 FMI 0 PID: PSID 25 Aftertreatment DPF Auxillary Heater Mode
