C2179 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 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.
Code C2179 Description
What are the Possible Causes of the DTC C2179?
- 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?
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 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.
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Information for Specific Makes
- C2179 Lexus — Tire Pressure Monitor ECU Communication Stop
- C2179 Scion — Tire Pressure Monitor ECU Communication Stop
- C2179 Toyota — Tire Pressure Monitor ECU Communication Stop
Frequently Asked Questions about C2179 Code
1. What does the OBDII code C2179 mean?
C2179 indicates that the Tire Pressure Monitor ECU has stopped communicating with the vehicle’s network, often due to a connection or system fault.
2. What are the common symptoms of code C2179?
Symptoms may include a TPMS warning light on the dashboard, failure to display tire pressure readings, or intermittent TPMS functionality.
3. What causes the C2179 code to appear?
Common causes include a malfunctioning TPMS ECU, damaged wiring or connectors, a blown fuse, or an issue with the vehicle’s CAN (Controller Area Network) communication system.
4. Can a low tire pressure cause the C2179 code?
No, low tire pressure itself does not cause this code. C2179 is related to communication issues with the TPMS ECU, not the sensors directly.
5. How is the C2179 code diagnosed?
A technician will typically use a scan tool to confirm the code, inspect the TPMS ECU and its wiring, check for power and ground at the ECU, and test the vehicle’s communication network.
6. Can I still drive with the C2179 code active?
Yes, but the TPMS system will not function properly, which may compromise your ability to monitor tire pressure and increase the risk of driving on underinflated tires.
7. How is the C2179 code fixed?
Repairs may involve replacing or reprogramming the TPMS ECU, repairing faulty wiring or connectors, replacing a blown fuse, or addressing CAN network issues.
8. How much does it cost to fix the C2179 code?
The repair cost can vary but typically ranges from $100 to $500, depending on whether the issue involves wiring repairs, ECU replacement, or network diagnostics.
9. Can a dead TPMS sensor cause the C2179 code?
No, a dead TPMS sensor usually triggers a different code. C2179 is specific to communication issues with the TPMS ECU.
10. Will disconnecting the battery clear the C2179 code?
Disconnecting the battery may temporarily reset the code, but it will likely return if the underlying issue is not addressed.
Discuss the causes and fixes for C2179 OBDII Code
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