Engine-Codes - Infiniti - P1721 2003 INFINITI G35

P1721 2003 INFINITI G35 - Vehicle Speed Sensor MTR

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1721 2003 INFINITI G35 Possible Causes

  • Faulty Vehicle Speed Sensor
  • Vehicle Speed Sensor harness is open or shorted
  • Vehicle Speed Sensor circuit poor electrical connection
  • Transmission Control Module (TCM) communication

How is the P1721 2003 INFINITI G35 code repair?

Start by checking 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.

What is the cost to diagnose the P1721 2003 INFINITI G35 code

Labor: 1.0

The cost to diagnose the P1721 2003 INFINITI G35 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

TCM does not receive the proper vehicle speed sensor MTR signal (input by CAN communication) from combination meter.

Possible Symptoms

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

P1721 2003 INFINITI G35 Meaning

The vehicle speed sensor·MTR signal is transmitted from combination meter to Transmission Control Module (TCM) by CAN communication line. The signal functions as an auxiliary device to the revolution sensor when it is malfunctioning. The TCM will then use the vehicle speed sensor·MTR signal.

More Information

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