DTC P0116: CHT Sensor Circuit Range/Performance: Notes

DTC P0116 CHART (MZI-3.7)

DTC P0116	CHT sensor circuit range/performance
DETECTION CONDITION	P0116 Indicates the engine coolant temperature logic test has failed. This DTC indicates that the CHT value is higher than the calibrated value and could prevent 1 or more OBD monitors from completing. The PCM runs this logic after an engine off and a calibrated soak period (typically 6 hours). This soak period allows the IAT and the CHT to stabilize and not differ by more than a calibrated value. DTC P0116 is set when all of the following conditions are met: The CHT at engine start exceeds the IAT at engine start by more than a calibrated value, typically 17 °C {31 °F} . The CHT exceeds a calibrated value, typically 107 °C {225 °F} . The fuel system, heated oxygen and misfire monitors have not completed. The calibrated time to set DTC P0116 has expired.
POSSIBLE CAUSE	CHT sensor malfunction Cooling system malfunction PCM malfunction

DTC P0116

CHT sensor circuit range/performance

DETECTION CONDITION

P0116 Indicates the engine coolant temperature logic test has failed. This DTC indicates that the CHT value is higher than the calibrated value and could prevent 1 or more OBD monitors from completing. The PCM runs this logic after an engine off and a calibrated soak period (typically 6 hours). This soak period allows the IAT and the CHT to stabilize and not differ by more than a calibrated value. DTC P0116 is set when all of the following conditions are met:
- The CHT at engine start exceeds the IAT at engine start by more than a calibrated value, typically 17 °C {31 °F} .
- The CHT exceeds a calibrated value, typically 107 °C {225 °F} .
- The fuel system, heated oxygen and misfire monitors have not completed.
- The calibrated time to set DTC P0116 has expired.

POSSIBLE CAUSE