Ford Fiesta Quiz
Engine

Engine Control Electronics. Diagnosis and Testing

In this manual: Engine
Service Information — 27Suspension — 48Transmission — 9Brake System — 52Steering — 21Engine — 140Manual Transmission, Clutch, Transfer Case and Power Transfer Unit — 48Exhaust System — 6Fuel System — 21Climate Control System — 58Instrumentation and Warning Systems — 26Battery and Charging System — 20Infotainment Systems — 41Lighting — 29Power Distribution — 11Electronic Function Group — 30Body and Paint — 275Frame and Mounting — 3
~6min read

DTC Chart: Powertrain Control Module (PCM)

The diagnostics described in this manual assume a certain level of skill and knowledge of Ford diagnostic techniques.


DTC Chart: Powertrain Control Module (PCM)


Trouble Code Description Action
P0125 Insufficient Engine Coolant Temperature for Closed Loop Fuel Control
Refer to: Engine Cooling (303-03B Engine Cooling - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma, Diagnosis and Testing).
P0128 Engine Coolant Thermostat (Engine Coolant Temperature Below Thermostat Regulating Temperature)
Refer to: Engine Cooling (303-03B Engine Cooling - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma, Diagnosis and Testing).
P0217 Engine Coolant Overtemperature Conditions
Refer to: Engine Cooling (303-03B Engine Cooling - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma, Diagnosis and Testing).
P0460 Fuel Level Sensor "A" Circuit
  • First, refer to the Transmission Control/Emissions Diagnosis (PC/ED) manual.
  • If directed here from PC/ED,
    Refer to: Instrument Cluster, Message Center and Warning Chimes (413-01 Instrument Cluster, Message Center and Warnings. Diagnosis and Testing).
P0461 Fuel Level Sensor "A" Circuit Range/Performance
  • First, refer to the Transmission Control/Emissions Diagnosis (PC/ED) manual.
  • If directed here from PC/ED,
    Refer to: Instrument Cluster, Message Center and Warning Chimes (413-01 Instrument Cluster, Message Center and Warnings. Diagnosis and Testing).
P0462 Fuel Level Sensor "A" Circuit Low Signal
  • First, refer to the Transmission Control/Emissions Diagnosis (PC/ED) manual.
  • If directed here from PC/ED,
    Refer to: Instrument Cluster, Message Center and Warning Chimes (413-01 Instrument Cluster, Message Center and Warnings. Diagnosis and Testing).
P0463 Fuel Level Sensor "A" Circuit High Signal
  • First, refer to the Transmission Control/Emissions Diagnosis (PC/ED) manual.
  • If directed here from PC/ED,
    Refer to: Instrument Cluster, Message Center and Warning Chimes (413-01 Instrument Cluster, Message Center and Warnings. Diagnosis and Testing).
P0504 Brake Switch "A"/"B" Correlation
Refer to: Cruise Control (419-03 Cruise Control, Diagnosis and Testing).
P0532 A/C Refrigerant Pressure Sensor "A" Circuit Low Signal
  • For vehicles with EMTC,
    Refer to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
  • For vehicles with EATC,
    Refer to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
P0533 A/C Refrigerant Pressure Sensor "A" Circuit High Signal
  • For vehicles with EMTC,
    Refer to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
  • For vehicles with EATC,
    Refer to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
P0562 Low system voltage
Refer to: Charging System - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
P0563 System Voltage High
Refer to: Charging System - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
P0578 Cruise Control Multi-Function Input "A" Circuit Stuck
Refer to: Cruise Control (419-03 Cruise Control, Diagnosis and Testing).
P0579 Cruise Control Multi-Function Input "A" Circuit Range/Performance
Refer to: Cruise Control (419-03 Cruise Control, Diagnosis and Testing).
P058A Battery Monitor Module Performance
Refer to: Charging System - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
P0645 A/C Clutch Relay Control Circuit
  • For vehicles with EMTC,
    Refer to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
  • For vehicles with EATC,
    Refer to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
P0646 A/C Clutch Relay Control Circuit Low Signal
  • For vehicles with EMTC,
    Refer to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
  • For vehicles with EATC,
    Refer to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
P0647 A/C Clutch Relay Control Circuit High Signal
  • For vehicles with EMTC,
    Refer to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
  • For vehicles with EATC,
    Refer to: Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) (412-00 Climate Control System - General Information, Diagnosis and Testing).
P065B Generator Control Circuit Range/Performance INSTALL a new generator.
Refer to: Generator - 1.6 L EcoBoost (132 kW/180 L hp) - Sigma (414-02 Generator and Regulator, Removal and Installation).
P065C Generator Mechanical Performance
Refer to: Charging System - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
P06E9 Engine Starter Motor Performance
Refer to: Starting System (303-06B Starting System – 1.6 L EcoBoost (132 kW/180 L hp) – Sigma, Diagnosis and Testing).
P0830 Clutch Pedal Circuit "A"
Refer to: Starting System (303-06B Starting System – 1.6 L EcoBoost (132 kW/180 L hp) – Sigma, Diagnosis and Testing).
P0833 Clutch Pedal Switch "B" Circuit
Refer to: Cruise Control (419-03 Cruise Control, Diagnosis and Testing).
P0A3B Generator Overheating
Refer to: Charging System - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
P162D Cruise Control Internal Module Performance
Refer to: Cruise Control (419-03 Cruise Control, Diagnosis and Testing).
P26B7 Engine Coolant Bypass Valve "C" Control Circuit/Open
Refer to: Engine Cooling (303-03B Engine Cooling - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma, Diagnosis and Testing).
P26BD Engine Coolant Bypass Valve "D" Control Circuit/Open
Refer to: Engine Cooling (303-03B Engine Cooling - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma, Diagnosis and Testing).
U012D Lost Communication with Generator Control Module
Refer to: Charging System - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
U0167 Lost Communication with Vehicle Anti-Theft Module
See: Passive Anti-Theft System (PATS) (419-01C Passive Anti-Theft System (PATS) - Vehicles With Keyless Entry and Push Button Start, Diagnosis and Testing).
U0426 Incorrect data received from the vehicle immobilizer control module
See: Passive Anti-Theft System (PATS) (419-01C Passive Anti-Theft System (PATS) - Vehicles With Keyless Entry and Push Button Start, Diagnosis and Testing).
U042E Incorrect Data Received from Generator Control Module
Refer to: Charging System - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
U1007 Lost communication with Battery Monitor Sensor "A"
Refer to: Charging System - 1.6 L EcoBoost (132 kW/180 L PS) - Sigma (414-00 Charging System - General Information, Diagnosis and Testing).
All other Diagnostic Trouble Codes — Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual. Section 3 Symptom Chart.

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A quick Ford Fiesta quiz: every answer comes with an explanation and a link to the manual page.