AutoCodes – Lexus – C2179 Lexus

C2179 Lexus Code - Tire Pressure Monitor ECU Communication Stop

Quick Answer

The Main Body ECU (Multiplex Network Body ECU) sends signals to the Tire Pressure Warning ECU and Receiver via a direct line. Common causes include Faulty Main Body ECU (Multiplex Network Body ECU), Main Body ECU (Multiplex Network Body ECU) harness is open or shorted, Main Body ECU (Multiplex Network Body ECU) circuit poor electrical connection. 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
C2179 Lexus indicates Tire Pressure Monitor ECU Communication Stop.
Common causes
Common causes include Faulty Main Body ECU (Multiplex Network Body ECU), Main Body ECU (Multiplex Network Body ECU) harness is open or shorted, Main Body ECU (Multiplex Network Body ECU) circuit poor electrical connection.
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 1,902
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 C2179 Lexus Description

The Main Body ECU (Multiplex Network Body ECU) sends signals to the Tire Pressure Warning ECU and Receiver via a direct line. The Diagnostic Trouble Code (DTC) will be set when the communication between the Main Body ECU (Multiplex Network Body ECU) and Tire Pressure Warning ECU and Receiver is interrupted for 10 seconds or more.
OBDII Code C2179 Lexus - Tire Pressure Monitor ECU Communication Stop - AutoCodes.com
C2179 Lexus Code - Tire Pressure Monitor ECU Communication Stop

What are the Possible Causes of the DTC C2179 Lexus?

  • Faulty Main Body ECU (Multiplex Network Body ECU)
  • Main Body ECU (Multiplex Network Body ECU) harness is open or shorted
  • Main Body ECU (Multiplex Network Body ECU) circuit poor electrical connection
  • Faulty Tire Pressure Warning ECU and Receiver

How to Fix the DTC C2179 Lexus?

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 C2179 Lexus 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 C2179 Lexus code?

Need more information on how to fix the C2179 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C2179 Lexus code diagnosed by a professional: Find a repair shop in your area

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 C2179 Lexus Code

1. What are the common symptoms of OBDII code C2179 in a Lexus related to the Tire Pressure Monitor ECU Communication Stop?

- Common symptoms include the TPMS warning light staying illuminated, inaccurate or missing tire pressure readings, and loss of communication with the TPMS system.

2. What are the possible causes of OBDII code C2179 in a Lexus?

- The code C2179 can be triggered by issues such as a faulty Tire Pressure Monitor ECU, damaged wiring or connectors, low battery voltage, or problems with the TPMS sensors.

3. How can I diagnose the OBDII code C2179 in a Lexus related to the Tire Pressure Monitor ECU Communication Stop?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific fault codes, checking the TPMS system components for damage, and testing the communication signals.

4. Can I reset the OBDII code C2179 in a Lexus myself?

- While you can clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

5. What are some repair tips for fixing the OBDII code C2179 in a Lexus?

- Repair tips may include inspecting and repairing any damaged wiring or connectors, replacing the Tire Pressure Monitor ECU if necessary, ensuring proper battery voltage, and recalibrating the TPMS sensors.

6. Is it safe to continue driving with the OBDII code C2179 in a Lexus triggered?

- It is generally not recommended to continue driving with the code triggered, as it can affect the accuracy of the TPMS system and compromise overall safety.

7. Can weather conditions affect the triggering of OBDII code C2179 in a Lexus?

- Extreme weather conditions, such as temperature fluctuations or moisture intrusion, can potentially impact the TPMS components and lead to the code being triggered.

8. How long does it typically take to repair the OBDII code C2179 in a Lexus?

- The repair time can vary depending on the exact cause of the issue, but it may take anywhere from a few hours to a full day to diagnose and fix the problem.

9. Are there any preventative measures to avoid OBDII code C2179 in a Lexus?

- Regularly checking and maintaining proper tire pressure, inspecting the TPMS system components for damage, and addressing any warning signs promptly can help prevent the code C2179 from being triggered.

10. Can I drive my Lexus without functioning TPMS if the OBDII code C2179 is unresolved?

- While it is possible to drive without a functioning TPMS system, it is not recommended as it compromises your ability to monitor tire pressure, which is crucial for safety and performance.

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