AutoCodes – Generic – C1720

C1720 Code - Function Code Data From Front Left Transmitter Is Malfunctioning

Quick Answer

A sensor-transmitter integrated with a valve is installed in each wheel. Common causes include Faulty Front Left Transmitter sensor, Front Left Transmitter sensor has not bee programmed, Faulty Tire Pressure Receiver. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C1720 indicates Function Code Data From Front Left Transmitter Is Malfunctioning.
Common causes: Common causes include Faulty Front Left Transmitter sensor, Front Left Transmitter sensor has not bee programmed, Faulty Tire Pressure Receiver.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,227

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1720 Description

A sensor-transmitter integrated with a valve is installed in each wheel. It transmits a detected air pressure signal in the form of a radio wave when the vehicle is moving. The radio signal is received by the tire pressure receiver and send to the Body Control Module (BCM). The BCM monitors the sensor-transmitter. The BCM sets the OBDII code when the sensor-transmitter signal is not to factory specifications.

OBDII Code C1720 - Function Code Data From Front Left Transmitter Is Malfunctioning - AutoCodes.com — C1720 Code - Function Code Data From Front Left Transmitter Is Malfunctioning

What does this mean?

What are the Possible Causes of the DTC C1720?

Faulty Front Left Transmitter sensor
Front Left Transmitter sensor has not bee programmed
Faulty Tire Pressure Receiver
Faulty Body Control Module (BCM)

How to Fix the DTC C1720?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1720 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1720 code?

Need more information on how to fix the C1720 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1720 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1720 Infiniti — Function Code Data From Front Left Transmitter Is Malfunctioning
C1720 Nissan — Function Code Data From Front Left Transmitter Is Malfunctioning

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1720 Code

1. What are the common symptoms of OBDII code C1720?

- Common symptoms include issues with the tire pressure monitoring system (TPMS), inaccurate tire pressure readings, and warning lights on the dashboard.

2. What could cause the OBDII code C1720 to trigger?

- This code is usually triggered by a malfunction in the front left tire pressure sensor or transmitter, such as sensor damage, low battery power, or communication errors.

3. How can I diagnose the cause of OBDII code C1720?

- You can diagnose the issue by checking the tire pressure in the front left tire manually, inspecting the sensor for physical damage, and using a TPMS diagnostic tool to read sensor data.

4. Can I reset the OBDII code C1720 without fixing the underlying issue?

- Resetting the code without addressing the underlying problem will likely result in the code reappearing once the system detects the malfunction again.

5. What are the repair options for OBDII code C1720?

- Repair options may include replacing the front left tire pressure sensor/transmitter, recalibrating the TPMS system, or addressing any wiring or communication issues.

6. Is it safe to drive with OBDII code C1720 present?

- It is generally safe to drive with this code, but you should address the issue promptly to ensure the accurate functioning of the TPMS system.

7. How can I prevent OBDII code C1720 from reoccurring?

- Regularly checking tire pressure, maintaining sensor health, and following proper TPMS maintenance practices can help prevent this code from reoccurring.

8. Can extreme weather conditions affect OBDII code C1720?

- Extreme temperatures or conditions like snow and ice can impact tire pressure readings and sensor performance, potentially leading to the triggering of this code.

9. Will fixing OBDII code C1720 improve fuel efficiency?

- While fixing this code may not directly impact fuel efficiency, maintaining accurate tire pressure through a functioning TPMS system can contribute to better fuel economy.

10. How long does it typically take to repair OBDII code C1720?

- The repair time can vary depending on the exact cause of the malfunction, but simple fixes like sensor replacement can usually be completed within an hour or two at a repair shop.