Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
Powertrain DTC Charts and Descriptions 4-23
Diagnostic Trouble Code (DTC) Charts and Descriptions
P0112 - Intake Air Temperature (IAT) Sensor 1 Circuit Low
Description: This DTC sets when the IAT sensor signal is less than the self-test minimum.
Possible Causes: • IAT circuit short to ground
• Damaged IAT sensor
• Incorrect harness connection
Diagnostic Aids: An IAT sensor PID reading less than the self-test minimum with ignition ON engine OFF or during any engine
operating mode indicates a concern is present.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test DA.
P0113 - Intake Air Temperature (IAT) Sensor 1 Circuit High
Description: This DTC sets when the IAT sensor signal is greater than the self-test maximum.
Possible Causes: • IAT circuit open
• IAT circuit short to voltage
• Damaged IAT sensor
• Incorrect harness connection
Diagnostic Aids: An IAT sensor PID reading greater than self-test maximum with the ignition ON engine OFF or during any
engine operating mode indicates a concern is present.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test DA.
P0114 - Intake Air Temperature (IAT) Sensor 1 Intermittent/Erratic
Description: This DTC sets when the IAT sensor signal was intermittent during the comprehensive component monitor
(CCM).
Possible Causes: • IAT circuit intermittent open
• IAT circuit intermittent short to voltage
• IAT circuit intermittent short to ground
• Damaged IAT sensor
• Damaged harness connector
• Damaged harness
Diagnostic Aids: Monitor the IAT sensor value on a scan tool. Look for sudden changes in the reading when the harness is
wiggled or the sensor is tapped.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test DA.
P0116 - Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/Performance
Description: This DTC sets when the engine coolant temperature or cylinder head temperature value is higher than the
calibrated value and could prevent one or more on board diagnostic (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 intake air temperature and the engine coolant temperature or cylinder head temperature to stabilize and not differ by greater than a calibrated value. This DTC sets when all of the following conditions are met: The engine coolant temperature at engine start exceeds the intake air temperature at engine start by greater than a calibrated value, typically 17°C (30°F). The engine coolant temperature 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 this DTC has expired.
Possible Causes: • ECT or cylinder head temperature (CHT) sensor
• Coolant system concern
Diagnostic Aids: Make sure the intake air temperature and the engine coolant temperature or cylinder head temperature are
similar when the engine is cold. Also make sure the ECT or CHT sensor and the actual engine operating temperatures are the same.
Application Key On Engine Off Key On Engine Running Continuous Memory
EcoSport, GO to Pinpoint Test DX. Edge 2.0L,
2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.