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2004 FORD THUNDERBIRD
3.8L V6•FWD•AUTOMATIC•gas
1 active safety recall on this vehicle — view recalls
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Repairs0Labor484Torque484Fluid7DTC1721Battery1Maintenance0Recalls1
P0941moderate severityPowertrain

Hydraulic Oil Temperature Sensor Circuit Intermittent/Erratic

on 2004 Ford Thunderbird 3.8L V6 · FWD

What this code means

The hydraulic oil temperature sensor signal is intermittent or erratic. Loose connections or a failing sensor are common culprits.

Symptoms

  • Intermittent transmission warning light
  • Unpredictable shift behavior
  • Fluctuating temperature readings

Common causes

  • Loose or corroded connector
  • Faulty oil temperature sensor
  • Chafed or damaged wiring
  • Intermittent module fault

Diagnostic steps

  1. Scan for intermittent codes
  2. Wiggle test wiring and connectors
  3. Monitor sensor data during driving
  4. Repair or replace faulty components
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