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3.5L V6 EcoBoostAWDAUTOMATICgasturbo
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P0871moderate severityPowertrain

Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance

on 2013 Ford Taurus 3.5L V6 EcoBoost · AWD

What this code means

The transmission fluid pressure sensor or switch C circuit is reading outside its expected range. This can cause incorrect shift timing and pressure control issues.

Symptoms

  • Harsh or delayed shifts
  • Transmission slipping
  • Check engine light on

Common causes

  • Faulty transmission fluid pressure sensor
  • Low or dirty transmission fluid
  • Wiring or connector problems
  • Internal valve body fault

Diagnostic steps

  1. Check transmission fluid level and condition
  2. Scan for related transmission codes
  3. Inspect sensor wiring and connector
  4. Test sensor signal against actual pressure

Other Powertrain codes on this vehicle

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