Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2016 Ford Fiesta STFACTORY OEM SERVICE PROCEDURE
1.6L Ecoboost
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| P0125 | Insufficient Coolant Temp For Closed Loop Fuel Control | REFER to: Engine Cooling . |
| P0128 | Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature) | REFER to: Engine Cooling . |
| P0217 | Engine Coolant Overtemperature Condition | REFER to: Engine Cooling . |
| P0460 | Fuel Level Sensor "A" Circuit | First, Refer to Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)
. If sent here from PC/ED, REFER to: Instrumentation, Message Center and Warning Chimes . |
| P0461 | Fuel Level Sensor "A" Circuit Range/Performance | First, Refer to Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)
. If sent here from PC/ED, REFER to: Instrumentation, Message Center and Warning Chimes . |
| P0462 | Fuel Level Sensor "A" Circuit Low | First, Refer to Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)
. If sent here from PC/ED, REFER to: Instrumentation, Message Center and Warning Chimes . |
| P0463 | Fuel Level Sensor "A" Circuit High | First, Refer to Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)
. If sent here from PC/ED, REFER to: Instrumentation, Message Center and Warning Chimes . |
| P0504 | Brake Switch "A"/" B" Correlation | REFER to: Cruise Control . |
| P0532 | A/C Refrigerant Pressure Sensor "A" Circuit Low | For vehicles with EMTC, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC)
. For vehicles with EATC, REFER to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) . |
| P0533 | A/C Refrigerant Pressure Sensor "A" Circuit High | For vehicles with EMTC, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC)
. For vehicles with EATC, REFER to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) . |
| P0562 | System Voltage Low | REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| P0563 | System Voltage High | REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| P0578 | Cruise Control Multifunction Input A Circuit Stuck | REFER to: Cruise Control . |
| P0579 | Cruise Control Multifunction Input A Circuit Range/Performance | REFER to: Cruise Control . |
| P058A | Battery Monitor Module Performance | REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| P0645 | A/C Clutch Relay Control Circuit | For vehicles with EMTC, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC)
. For vehicles with EATC, REFER to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) . |
| P0646 | A/C Clutch Relay Control Circuit Low | For vehicles with EMTC, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC)
. For vehicles with EATC, REFER to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) . |
| P0647 | A/C Clutch Relay Control Circuit High | For vehicles with EMTC, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC)
. For vehicles with EATC, REFER to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) . |
| P065B | Generator Control Circuit Range/Performance | INSTALL a new generator.REFER to: Generator - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| P065C | Generator Mechanical Performance | REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| P06E9 | Engine Starter Performance | REFER to: Starting System . |
| P0830 | Clutch Pedal "A" Circuit | REFER to: Starting System . |
| P0833 | Clutch Pedal Switch "B" Circuit | REFER to: Cruise Control . |
| P0A3B | Generator Over Temperature | REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| P162D | Internal Control Module Cruise Control Performance | REFER to: Cruise Control . |
| P26B7 | Engine Coolant Bypass Valve "C" Control Circuit/Open | REFER to: Engine Cooling . |
| P26BD | Engine Coolant Bypass Valve "D" Control Circuit/Open | REFER to: Engine Cooling . |
| U012D | Lost Communication With Generator Control Module | REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| U0167 | Lost Communication With Vehicle Immobilizer Control Module | REFER to: Passive Anti-Theft System (PATS) . |
| U0426 | Invalid Data Received From Vehicle Immobilizer Control Module | REFER to: Passive Anti-Theft System (PATS) . |
| U042E | Invalid Data Received From Generator Control Module | REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| U1007 | Lost Communication With Battery Monitoring Sensor "A" | REFER to: Charging System - 1.6L EcoBoost (132kW/180PS) - Sigma . |
| All Other DTCs | - | Refer to Engine Controls - Symptom Charts (Except Diesel & Hybrid) . |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.