SPN 110 - FMI 16 (Fault Code 146)

SPN110 FMI16
Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Moderately Severe
Level

Engine Coolant Temperature Sensor Circuit

CODES:
Fault Code: 146
PID(P), SID(S): P110
SPN: 110
FMI: 0/16
Lamp: Amber
SRT:

REASON: Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level. Engine coolant temperature signal indicates engine coolant temperature is
above engine protection warning limit.

EFFECT:
-Automotive: Progressive power derate increasing in severity from time of alert.
-Marine: calibration dependent.

Circuit Description:
The engine coolant temperature sensor is used by the Electronic Control Module (ECM) to monitor the engine coolant temperature. The ECM monitors the voltage on the signal pin and converts this to a temperature value. The engine coolant temperature value is used by the ECM for the engine protection system and engine emissions control.

Component Location:
The engine coolant temperature sensor is located on the exhaust side of the engine near the thermostat housing.

Shop Talk:
This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature.


Read More:
SPN 110 - FMI 4 (Fault Code 145)
SPN 110 - FMI 3 (Fault Code 144)









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