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.
4-72 Powertrain DTC Charts and Descriptions
Diagnostic Trouble Code (DTC) Charts and Descriptions
P0480 - Fan 1 Control Circuit (Continued) For Variable Speed Electric Cooling Fan
Description: This DTC sets if the PCM detects the voltage on the FCV circuit is not within the expected range.
Possible Causes: • FCV circuit open
• FCV circuit short
• B+ or ground circuit concern to cooling fan
• VPWR open to cooling fan (if applicable)
• Damaged cooling fan module
Diagnostic Aids:
For Cooling Fan Clutch
Description: This DTC sets if the PCM detects the voltage on the FCV circuit is not within the expected range.
Possible Causes: • FCV circuit open
• FCV circuit short
• Damaged cooling fan clutch solenoid
Diagnostic Aids:
Application Key On Engine Off Key On Engine Running Continuous Memory
EcoSport, GO to Pinpoint Test KF. Edge, Expedition, Explorer, F-150, Fiesta 1.0L, Fiesta 1.6L TiVCT, Flex, Focus 2.3L, Fusion, KA, MKC, MKS, MKT, MKX, MKZ, Mustang, Navigator, Taurus, Transit
Escape/Kuga, GO to Pinpoint Test KN. Fiesta 1.6L GTDI, Focus 1.0L, Focus 2.0L, Transit Connect
F-Series Super Duty GO to Pinpoint Test HV.
P0481 - Fan 2 Control Circuit
Description: This DTC sets when the HFC output is commanded on (grounded) and excessive current draw is detected on
the HFC circuit; or when the HFC circuit is commanded off and voltage is not detected on the HFC circuit. The PCM expects to detect VPWR voltage through the high speed fan control (FC) relay coil to the HFC circuit.
Possible Causes: • HFC circuit open
• HFC circuit short
• VPWR circuit to the HFC relay open
• Damaged HFC relay
Diagnostic Aids: When the HFC_F PID reads YES, a concern is present. An open circuit or short to ground can only be detected
when the PCM is not grounding the HFC circuit. A short to voltage can only be detected when the PCM is grounding the HFC circuit.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test KF.
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.