Automatic Transmission Interlock


Table of contents

P1730 INFINITI Possible Causes

  • Faulty low coast brake solenoid valve
  • Low coast brake solenoid valve harness is open or shorted
  • Low coast brake solenoid valve circuit poor electrical connection
  • Faulty Automatic Transmission Fluid (ATF) pressure switch 2

How do I fix code P1730 INFINITI?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Cost of diagnosing the P1730 INFINITI code

  The cost of diagnosing the P1730 INFINITI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected

  Diagnostic Trouble Code (DTC) P1730 is detected when Transmission Control Module (TCM) does not receive the proper voltage signal from the sensor and switch.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1730 INFINITI Description

  Fail-safe function to the transmission range switch detects the selector position and sends a signal to the Transmission Control Module (TCM).

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