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2006 MAZDA MPV
3.0L V6•FWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor486Torque3100Fluid7DTC1789Battery1Maintenance0Recalls2
P1743moderate severityPowertrain

Torque Converter Clutch (TCC) Solenoid Malfunction

on 2006 Mazda MPV 3.0L V6 · FWD

What this code means

The PCM has detected an electrical fault in the torque converter clutch solenoid circuit. This solenoid controls lockup of the torque converter for efficiency.

Symptoms

  • Poor fuel economy
  • Slipping or no lockup
  • Harsh converter engagement

Common causes

  • Faulty TCC solenoid
  • Wiring open or short
  • Dirty transmission fluid
  • Faulty PCM driver

Diagnostic steps

  1. Scan for stored codes
  2. Test TCC solenoid resistance
  3. Inspect wiring and connector
  4. Check transmission fluid condition
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