AutoCodes – Generic – C2166

C2166 Code - Abnormal Temperature Inside ID 2 Tire

Quick Answer

The Tire Pressure Warning Valve And Transmitter measures tire internal temperature as well as tire pressure, and transmits the information to the tire pressure monitor receiver along with the transmitter ID. Common causes include Damaged Tire, Faulty Tire Pressure Warning Valve And Transmitter, Faulty Tire Pressure Warning ECU. 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: C2166 indicates Abnormal Temperature Inside ID 2 Tire.
Common causes: Common causes include Damaged Tire, Faulty Tire Pressure Warning Valve And Transmitter, Faulty Tire Pressure Warning ECU.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,272

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C2166 Description

The Tire Pressure Warning Valve And Transmitter measures tire internal temperature as well as tire pressure, and transmits the information to the tire pressure monitor receiver along with the transmitter ID. If the measured temperature is out of the specified range, the Tire Pressure Warning ECU recognizes it as a malfunction, outputs the Diagnostic Trouble Code (DTC), and blinks the tire pressure warning light.

OBDII Code C2166 - Abnormal Temperature Inside ID 2 Tire - AutoCodes.com — C2166 Code - Abnormal Temperature Inside ID 2 Tire

What does this mean?

What are the Possible Causes of the DTC C2166?

Damaged Tire
Faulty Tire Pressure Warning Valve And Transmitter
Faulty Tire Pressure Warning ECU

How to Fix the DTC C2166?

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 C2166 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 C2166 code?

Need more information on how to fix the C2166 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C2166 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C2166 Lexus — Abnormal Temperature Inside ID 2 Tire
C2166 Scion — Abnormal Temperature Inside ID 2 Tire
C2166 Toyota — Abnormal Temperature Inside ID 2 Tire

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 C2166 Code

1. What are the common symptoms of OBDII code C2166?

- The common symptoms include abnormal temperature readings from the tire pressure monitoring system (TPMS) for the ID 2 tire, as well as potential TPMS warning lights on the dashboard.

2. What could cause the OBDII code C2166 to trigger?

- The code C2166 may be triggered by issues such as a faulty TPMS sensor, wiring issues, low tire pressure, or tire temperature abnormalities.

3. How can I diagnose the cause of OBDII code C2166?

- To diagnose the cause of C2166, you can start by checking the tire pressure in the ID 2 tire, inspecting the TPMS sensor for damage, and ensuring that all wiring connections are secure.

4. Can low tire pressure cause the OBDII code C2166 to appear?

- Yes, low tire pressure in the ID 2 tire can trigger code C2166 as the abnormal temperature reading may be a result of the tire being underinflated.

5. What is the typical repair for OBDII code C2166?

- The typical repair for code C2166 involves addressing the root cause, which could include replacing a faulty TPMS sensor, correcting wiring issues, inflating the tire to the proper pressure, or addressing temperature abnormalities.

6. Are there any DIY tips for fixing OBDII code C2166?

- DIY tips for addressing code C2166 include checking and inflating the tire pressure to the recommended level, inspecting the TPMS sensor for damage, and ensuring all wiring connections are secure.

7. Can extreme weather conditions trigger OBDII code C2166?

- Yes, extreme weather conditions such as extreme heat or cold can affect tire temperatures and trigger code C2166 due to abnormal readings in the ID 2 tire.

8. Is it safe to drive with OBDII code C2166 active?

- It is generally safe to drive with code C2166, but it is important to address the underlying issue promptly to ensure accurate tire temperature monitoring and proper functioning of the TPMS.

9. How can I reset OBDII code C2166 after making repairs?

- Once you have addressed the issue causing code C2166, you can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the error code.

10. Does OBDII code C2166 affect vehicle performance?

- OBDII code C2166 typically does not directly impact vehicle performance, but it can affect the accuracy of the tire pressure monitoring system and potentially compromise driving safety.