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2012 FORD FOCUS
2.0L I4 GDI•FWD•DCT•gas
8 active safety recalls on this vehicle — view recalls
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Repairs0Labor495Torque3417Fluid7DTC1890Battery1Maintenance0Recalls8
P0679low severityPowertrain

Cylinder 9 Glow Plug Circuit

on 2012 Ford Focus 2.0L I4 GDI · FWD

What this code means

The PCM detected a fault in the glow plug control circuit for cylinder 9. This may cause poor cold starting on larger diesel engines.

Symptoms

  • Hard cold starting
  • Rough cold running
  • Glow plug indicator on

Common causes

  • Faulty glow plug cylinder 9
  • Damaged wiring or connector
  • Failed glow plug control module
  • Poor ground connection

Diagnostic steps

  1. Retrieve trouble codes
  2. Test cylinder 9 glow plug resistance
  3. Inspect harness and connectors
  4. Verify control module output
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