C2123 2018 Toyota RAV4 Code - No Signal from Transmitter ID 3 In Main Mode
Quick Answer
The Tire Pressure Warning Valve and Transmitters that are installed in the tire and wheel assemblies measure the tire pressures. Common causes include Faulty Tire Pressure Warning Valve and Transmitter, 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
- C2123 2018 Toyota RAV4 indicates No Signal from Transmitter ID 3 In Main Mode.
- Common causes
- Common causes include Faulty Tire Pressure Warning Valve and Transmitter, 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.
Code C2123 2018 Toyota RAV4 Description
The Tire Pressure Warning Valve and Transmitters constantly send radio waves to the Tire Pressure Warning ECU and Receiver.
Under the conditions below, the Tire Pressure Warning ECU and Receiver is unable to receive the signals from the Tire Pressure Warning Valve and Transmitters, and a Diagnostic Trouble Code (DTC) is stored.
- Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.
- Devices using similar radio frequencies are used in the vehicle.
- The ID of the tire pressure warning valve and transmitter is mistyped during registration.
- A tire, wheel, and/or transmitter from a different vehicle is installed.
What are the Possible Causes of the DTC C2123 2018 Toyota RAV4?
- Faulty Tire Pressure Warning Valve and Transmitter
- Faulty Tire Pressure Warning ECU and Receiver
How to Fix the DTC C2123 2018 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 C2123 2018 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 C2123 2018 Toyota RAV4 Code
What does OBDII code C2123 mean for a 2018 Toyota RAV4?
Code C2123 indicates there is "No Signal from Transmitter ID 3 in Main Mode," typically related to the tire pressure monitoring system (TPMS).
What are the symptoms of code C2123 in a 2018 Toyota RAV4?
Common symptoms include the TPMS warning light illuminating on the dashboard and the system failing to display tire pressure readings for one or more tires.
What causes code C2123 in a 2018 Toyota RAV4?
The code is usually caused by a faulty TPMS sensor, a dead sensor battery, signal interference, or a wiring issue in the TPMS receiver.
How do you diagnose code C2123 on a 2018 Toyota RAV4?
Diagnosis involves scanning the vehicle with an OBDII tool, checking the functionality of the TPMS sensors, inspecting the wiring, and ensuring the sensors are properly programmed to the vehicle.
Can code C2123 cause driving issues in a 2018 Toyota RAV4?
While it doesn't directly affect driving performance, it can prevent accurate tire pressure monitoring, increasing the risk of driving with underinflated or overinflated tires.
How do you fix code C2123 on a 2018 Toyota RAV4?
Repairs typically include replacing the faulty TPMS sensor, recalibrating the system, or addressing wiring or receiver issues if applicable.
Does code C2123 require TPMS sensor replacement?
In most cases, yes, the code indicates a failure in the TPMS sensor, which often requires replacement to restore functionality.
Can a weak TPMS sensor battery trigger code C2123?
Yes, a weak or dead TPMS sensor battery can prevent the sensor from transmitting signals, leading to this code.
How much does it cost to fix code C2123 on a 2018 Toyota RAV4?
The cost can vary but typically ranges from $50 to $250 per TPMS sensor replacement, depending on parts and labor rates.
Can you clear code C2123 without fixing the issue?
Clearing the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will return until properly repaired.
Discuss the causes and fixes for C2123 2018 Toyota RAV4 OBDII Code
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