C2179 2017 Toyota RAV4 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 2017 Toyota RAV4 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 2017 Toyota RAV4 Description
What are the Possible Causes of the DTC C2179 2017 Toyota RAV4?
- 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 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 C2179 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.
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Frequently Asked Questions about C2179 2017 Toyota RAV4 Code
1. What does the OBDII code C2179 mean on a 2017 Toyota RAV4?
C2179 indicates a communication issue between the Tire Pressure Monitor ECU and other systems, typically caused by a loss of signal or wiring fault.
2. What are the common symptoms of code C2179 in a Toyota RAV4?
Symptoms include the Tire Pressure Monitoring System (TPMS) warning light staying on, failure to display tire pressure data, or intermittent TPMS operation.
3. What causes the C2179 code on a 2017 Toyota RAV4?
Common causes include damaged wiring or connectors, a malfunctioning TPMS ECU, a failed TPMS sensor, or interference with the communication network.
4. Can low tire pressure trigger code C2179?
No, low tire pressure does not directly cause this code; it relates to communication issues, not the actual tire pressure levels.
5. How do you fix code C2179 on a Toyota RAV4?
Start by inspecting the wiring and connectors for damage or corrosion. If no issues are found, check the TPMS ECU and sensors for proper operation and replace any faulty components.
6. Can a dead TPMS sensor battery cause C2179?
Yes, if a sensor’s battery is dead, it may fail to communicate with the TPMS ECU, potentially triggering this code.
7. Is it safe to drive with code C2179 on a 2017 Toyota RAV4?
While the vehicle can still be driven, you may not receive accurate tire pressure warnings, increasing the risk of driving on underinflated or overinflated tires.
8. How is code C2179 diagnosed on a Toyota RAV4?
A mechanic uses a scan tool to check for communication errors in the TPMS system, performs wiring inspections, and tests the TPMS sensors and ECU for faults.
9. Can clearing the code C2179 fix the issue?
Clearing the code may temporarily turn off the warning light, but the underlying issue must be repaired to prevent it from returning.
10. Does a software update fix code C2179 on a Toyota RAV4?
In rare cases, a software update to the TPMS ECU may resolve communication issues, but this is less common than physical repairs.
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