C2171 Scion Code - Transmitter ID not Registered
Quick Answer
The IDs of each tire pressure warning valve and transmitter are registered to the Tire Pressure Warning ECU and Receiver. Common causes include 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
- C2171 Scion indicates Transmitter ID not Registered.
- Common causes
- Common causes include 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 C2171 Scion Description
What are the Possible Causes of the DTC C2171 Scion?
- Faulty Tire Pressure Warning ECU and Receiver
How to Fix the DTC C2171 Scion?
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 C2171 Scion 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 C2171 Scion Code
1. What does the OBDII code C2171 mean on a Scion?
C2171 indicates that the vehicle's system has detected a "Transmitter ID not Registered," usually related to the Tire Pressure Monitoring System (TPMS).
2. What are the common symptoms of the C2171 code?
Symptoms include the TPMS warning light illuminating on the dashboard and possibly no real-time tire pressure readings on the vehicle's display.
3. What causes the C2171 code to appear?
The code is often caused by unregistered or mismatched TPMS sensor IDs, a dead TPMS sensor battery, or interference during sensor registration.
4. How do I fix the C2171 code on my Scion?
You need to register the TPMS sensor IDs to the vehicle's ECU using a TPMS programming tool or scan tool. Replace faulty sensors if needed.
5. Can I drive with the C2171 code active?
Yes, but the TPMS system will not function properly, meaning you won't be alerted to low tire pressure, which could be a safety issue.
6. How is the C2171 code diagnosed?
A technician will use a TPMS scan tool to check the sensor IDs, verify their status, and reprogram or replace any malfunctioning sensors.
7. Do I need to replace all TPMS sensors if I get the C2171 code?
No, only replace the sensor(s) with dead batteries or that cannot be registered. Sometimes reprogramming the existing sensors is sufficient.
8. Can a battery replacement in a TPMS sensor clear the C2171 code?
Yes, if the sensor battery was the issue. However, the sensor will still need to be re-registered to the vehicle after replacement.
9. What tools are needed to resolve the C2171 code?
A TPMS scan tool, OBDII scanner, or a compatible programming device is needed to register or reprogram the sensors.
10. How much does it cost to fix the C2171 code?
Costs can vary. Reprogramming sensors typically costs $50–$100 at a shop, while sensor replacements range from $50–$150 per sensor, plus labor.
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