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.
4-36 Powertrain DTC Charts and Descriptions
Diagnostic Trouble Code (DTC) Charts and Descriptions
P017C - Cylinder Head Temperature Sensor Circuit Low (Continued)
• Damaged cylinder head temperature (CHT) sensor
• Incorrect harness connection
Diagnostic Aids: The DTC P0117 may also be reported when this DTC sets. Either of these DTCs illuminates the malfunction
indicator lamp (MIL).
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test DL.
P017D - Cylinder Head Temperature Sensor Circuit High
Description: This DTC sets when a CHT circuit concern is detected.
Possible Causes: • CHT circuit open
• CHT circuit short to voltage
• Damaged cylinder head temperature (CHT) sensor
• Incorrect harness connection
Diagnostic Aids: The DTC P0118 may also be reported when this DTC sets. Either of these DTCs illuminate the malfunction
indicator lamp (MIL).
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test DL.
P017E - Cylinder Head Temperature Sensor Circuit Intermittent/Erratic
Description: This DTC sets when the CHT circuit becomes intermittently open or short while the engine is running.
Possible Causes: • Damaged CHT harness or connector
• Damaged cylinder head temperature (CHT) sensor
• CHT circuit open
• CHT circuit short to ground
• Low engine coolant
Diagnostic Aids: Monitor the CHT PID 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 DL.
P0181 - Fuel Temperature Sensor A Circuit Range/Performance
Description: This DTC sets when the FRT voltage falls below or exceeds a calibrated limit and amount of time during testing.
Possible Causes: • FRT circuit open
• FRT circuit short
• Low ambient temperature operation
• Incorrect harness connection
• Damaged fuel rail pressure temperature (FRPT) sensor
• Damaged PCM
Diagnostic Aids: Verify the FRT PID value to determine an open or short.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test DD.
P0182 - Fuel Temperature Sensor A Circuit Low
Description: This DTC sets when the PCM detects the FRT circuit is open or shorted to ground.
Possible Causes: • FRT circuit open
• FRT circuit short to ground
• VREF circuit open
• VREF circuit short to ground
• Low ambient temperature operation
• Incorrect harness connection
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.