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2002 FORD THUNDERBIRD
3.8L V6•FWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor484Torque484Fluid7DTC1688Battery1Maintenance0Recalls2
P0592low severityPowertrain

Cruise Control Multi-Function Input A Circuit Low

on 2002 Ford Thunderbird 3.8L V6 · FWD

What this code means

The signal voltage from the cruise control multi-function input switch is too low. This usually points to a shorted circuit or faulty switch preventing proper cruise control commands.

Symptoms

  • Cruise control won't engage
  • Cruise control buttons unresponsive
  • Warning light on dash

Common causes

  • Faulty cruise control switch
  • Short to ground in wiring
  • Corroded connector at switch
  • Failed steering wheel clockspring

Diagnostic steps

  1. Scan for related cruise control codes
  2. Check switch connector for corrosion or shorts
  3. Measure input signal voltage with switch operated
  4. Test switch resistance against spec
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Other Powertrain codes on this vehicle

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