1988 Ford Festiva L PlusFACTORY OEM SERVICE PROCEDURE

Malfunction Indicator Light (Mil)

  1. Malfunction indicator light comes on whenever an emissions related fault occurs. The fault warning light should go out after repairing fault in vehicle.
  2. A fault code will remain in ECA memory until erased. To erase memory, disconnect negative battery cable and depress brake pedal for at least 5 seconds. Reconnect battery cable and ensure malfunction indicator light is off.
Fig 1: Analog Voltmeter Trouble Code Pulse Patterns
G61439Courtesy of FORD MOTOR CO.
ECA FAULT CODES

Trouble Code No. Component Circuit Action To Take
01 Ignition Coil (-) Go To ECA-2
09 Cool. Temp. Sensor Go To ECA-4
13 Map Sensor Go To ECA-8
15 EGO Sensor Go To ECA-14
16 EGR Position Sensor Go To ECA-19
17 Feedback System Go To ECA-23
18 ABCV No. 1 Go To ECA-28
19 ABCV No. 2 Go To ECA-28
20 ABCV No. 3 Go To ECA-28
21 ABCV No. 4 Go To ECA-28
22 Shutoff Solenoid Go To ECA-31
28 EGR Vac. Solenoid 1 Go To ECA-35
29 EGR Vac. Solenoid 2 Go To ECA-35
31 Air Control Solenoid Go To ECA-39
34 E/L Solenoid Valve Go To ECA-43
35 A/C Solenoid Valve Go To ECA-43
38 EFE Heater Relay Go To ECA-47
70 Vacuum Switch Go To ECA-51
No Code N/A Go To ECA-55
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.