C2125 Code - No Signal from Transmitter ID 5 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
- C2125 indicates No Signal from Transmitter ID 5 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 C2125 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 C2125?
- Faulty Tire Pressure Warning Valve and Transmitter
- Faulty Tire Pressure Warning ECU and Receiver
How to Fix the DTC C2125?
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 C2125 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 C2125 code?
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Need Help with the Code?
Get the C2125 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C2125 Chrysler — Sensor Supply 2 Voltage
- C2125 Dodge — Sensor Supply 2 Voltage
- C2125 Jeep — Sensor Supply 2 Voltage
- C2125 Lexus — No Signal from Transmitter ID 5 In Main Mode
- C2125 Scion — No Signal from Transmitter ID 5 In Main Mode
- C2125 Toyota — No Signal from Transmitter ID 5 In Main Mode
Frequently Asked Questions about C2125 Code
1. What are common symptoms of OBDII code C2125?
- Common symptoms include issues with tire pressure monitoring system (TPMS) functionality, warning lights on the dashboard, and difficulty monitoring tire pressure.
2. What are the possible causes of OBDII code C2125?
- The code C2125 "No Signal from Transmitter ID 5 In Main Mode" can be caused by a faulty TPMS sensor, low tire pressure, TPMS module issues, or wiring problems.
3. How can I diagnose OBDII code C2125?
- Diagnosis involves checking the tire pressure in all tires, inspecting the TPMS sensors for damage, testing the TPMS module, and verifying the wiring connections for any issues.
4. Can low tire pressure trigger OBDII code C2125?
- Yes, low tire pressure can trigger code C2125 as the TPMS sensor may not be able to transmit a signal properly when tire pressure is below the recommended level.
5. How can I repair OBDII code C2125?
- Repair options may include inflating the tires to the correct pressure, replacing a faulty TPMS sensor, resetting the TPMS system, or repairing any damaged wiring related to the TPMS system.
6. Is it safe to continue driving with OBDII code C2125 present?
- It is generally safe to drive with code C2125, but it is recommended to address the underlying issue promptly to ensure proper functioning of the TPMS system.
7. Can weather conditions affect OBDII code C2125?
- Extreme weather conditions, such as severe cold or heat, can impact tire pressure and potentially trigger code C2125 due to fluctuations in tire pressure affecting TPMS sensor readings.
8. Will resetting the TPMS system clear OBDII code C2125?
- Resetting the TPMS system may clear the code temporarily, but if the underlying issue, such as a faulty sensor or wiring problem, is not resolved, the code is likely to reappear.
9. How much does it cost to repair OBDII code C2125?
- The cost of repairing code C2125 can vary depending on the specific issue causing the fault, such as sensor replacement, wiring repairs, or TPMS module troubleshooting. Costs can range from relatively inexpensive for simple fixes to more costly for complex repairs.
10. Can a DIY enthusiast fix OBDII code C2125 at home?
- DIY enthusiasts with knowledge of automotive repair may be able to address code C2125 at home by following diagnostic procedures, replacing TPMS sensors, checking wiring connections, and resetting the TPMS system using appropriate tools and equipment.
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