AutoCodesToyota – C2171 2017 Toyota RAV4

C2171 2017 Toyota RAV4 Code - Transmitter ID not Registered

Quick Answer

The IDs of each tire pressure warning valve and transmitter are registered to the Tire Pressure Warning ECU and Receiver. Common causes include Faulty Tire Pressure Warning ECU and 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
C2171 2017 Toyota RAV4 indicates Transmitter ID not Registered.
Common causes
Common causes include Faulty Tire Pressure Warning ECU and 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 201
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 21, 2023
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Code C2171 2017 Toyota RAV4 Description

The IDs of each tire pressure warning valve and transmitter are registered to the Tire Pressure Warning ECU and Receiver. When the Tire Pressure Warning ECU and Receiver detect that a transmitter ID code is not registered in the ECU, a Diagnostic Trouble Code (DTC) is output.
OBDII Code C2171 2017 Toyota RAV4 - Transmitter ID not Registered - AutoCodes.com
C2171 2017 Toyota RAV4 Code - Transmitter ID not Registered

What are the Possible Causes of the DTC C2171 2017 Toyota RAV4?

  • Faulty Tire Pressure Warning ECU and Receiver

How to Fix the DTC C2171 2017 Toyota RAV4?

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 C2171 2017 Toyota RAV4 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 C2171 2017 Toyota RAV4 code?

Need more information on how to fix the C2171 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 C2171 2017 Toyota RAV4 Code

1. What does the OBDII code C2171 mean on a 2017 Toyota RAV4?

C2171 indicates that the Transmitter ID for the tire pressure monitoring system (TPMS) is not registered or recognized by the vehicle's system.

2. What are the common symptoms of code C2171 on a 2017 Toyota RAV4?

The most common symptoms include the TPMS warning light illuminating on the dashboard and the system failing to display tire pressure readings.

3. What causes the C2171 code to appear in a 2017 Toyota RAV4?

This code is typically caused by the TPMS sensors not being registered to the vehicle, a dead or faulty TPMS sensor, or interference during the programming process.

4. How do I fix the C2171 code on my 2017 Toyota RAV4?

To fix the issue, re-register the TPMS sensors using a TPMS scan tool or have a technician perform the programming. If a sensor is damaged, it may need to be replaced.

5. Can low tire pressure trigger the C2171 code in a 2017 Toyota RAV4?

No, low tire pressure will not trigger the C2171 code. However, it will cause the TPMS warning light to turn on for a different reason.

6. Do I need to replace the TPMS sensors to resolve code C2171?

Not necessarily. First, attempt to re-register the sensors. Only replace them if they are confirmed to be faulty or have a dead battery.

7. What tools are needed to fix the C2171 code on a 2017 Toyota RAV4?

A TPMS scan tool or diagnostic tool capable of re-registering the transmitter IDs is required to address this issue.

8. Can I drive my 2017 Toyota RAV4 with the C2171 code active?

Yes, but the TPMS may not function correctly, meaning you won’t receive warnings about low tire pressure, which could be unsafe.

9. How much does it cost to fix the C2171 code on a 2017 Toyota RAV4?

The cost can vary. Reprogramming the sensors typically costs $50–$100 at a shop, while replacing a TPMS sensor can cost $50–$200 per sensor.

10. How can I prevent the C2171 code from occurring in the future?

Ensure that new TPMS sensors are properly registered after installation, and replace old sensors when their batteries are near the end of life.

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