NOTE: Please see the step by step troubleshooting procedures for this specific code.
PROBABLE CAUSES:
1. Ambient air temperature sensor not programmed correctly in ECM.
2. Ambient air temperature sensor connector/harness.
3. Ambient air temperature sensor.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 171 FMI 13 (ACM) Ambient Air Temperature Signal Not Available via the Controller Area Network
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 171 FMI 9 (CPC) J1587 Ambient Air Temperature Sensor Data Stopped Arriving
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 171 FMI 4 (ACM) Typically Ambient Air Temperature Circuit Failed Low
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 171 FMI 4 (CPC) Ambient Temperature Sensor Failed Low
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 171 FMI 3 (ACM) Ambient Air Temperature Circuit Failed High
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 171 FMI 3 (CPC) Ambient Temperature Sensor Failed High
