P0710moderate severityPowertrain

Transmission Fluid Temperature Sensor Circuit

on 1998 Chevrolet Astro 4.3L V6 Vortec · RWD

What this code means

Malfunction in the transmission fluid temperature sensor.

Symptoms

  • Check Engine Light
  • Incorrect shift timing
  • Limp mode possible

Common causes

  • Faulty temp sensor
  • Wiring issue
  • Connector corrosion

Diagnostic steps

  1. Test sensor resistance at known temperature
  2. Inspect wiring
  3. Check connector

Repair notes

Replace trans temp sensor (often internal, may require pan removal).

Other Powertrain codes on this vehicle

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