C2172 Scion Code - Transmitter ID Not Registered In 2nd Mode
Quick Answer
The C2172 diagnostic trouble code (DTC) for Scion vehicles indicates that the transmitter ID is not registered in the second mode. Common causes include Faulty key fob battery, Key fob signal interference, Immobilizer system malfunction. 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
- C2172 Scion indicates Transmitter ID Not Registered In 2nd Mode.
- Common causes
- Common causes include Faulty key fob battery, Key fob signal interference, Immobilizer system malfunction.
- 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.
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Code C2172 Scion Description
The C2172 diagnostic trouble code (DTC) for Scion vehicles indicates that the transmitter ID is not registered in the second mode. In simpler terms, this means that the vehicle's key fob or remote transmitter is not being recognized by the vehicle's immobilizer system when attempting to start the engine. The immobilizer system is a security feature that prevents the engine from starting without the correct key fob or transmitter signal.
Common Causes of C2172 Scion
- Faulty key fob battery
- Key fob signal interference
- Immobilizer system malfunction
- Key fob programming error
- Wiring or connection issues between the key fob and immobilizer system
Symptoms of C2172 Scion
- Engine not starting
- Intermittent starting issues
- Key fob not working to unlock/lock doors
- Security light flashing on the dashboard
- Vehicle going into anti-theft mode
How to Fix C2172 Scion
- Replace key fob battery: Start by replacing the battery in the key fob to ensure it is transmitting a strong signal.
- Reprogram key fob: If the key fob is not being recognized, it may need to be reprogrammed to sync with the vehicle's immobilizer system.
- Check for signal interference: Ensure there are no sources of signal interference, such as other electronic devices, that could be disrupting the key fob signal.
- Inspect wiring and connections: Check the wiring and connections between the key fob and immobilizer system for any damage or loose connections that could be causing the issue.
- Reset immobilizer system: If all else fails, resetting the immobilizer system may be necessary to clear any errors and reestablish communication with the key fob.
Cost to Fix C2172 Scion
The cost of repairing a C2172 code for a Scion vehicle can vary depending on the specific cause of the issue. In general, replacing a key fob battery can cost around $5-$20, while reprogramming a key fob may range from $50-$100. If there are wiring or connection issues, the cost can increase due to labor and parts. Overall, the total repair cost for this issue could range from $50 to $300, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for more accurate pricing.
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Frequently Asked Questions about C2172 Scion Code
1. What does OBDII code C2172 mean for a Scion vehicle?
C2172 indicates that the transmitter ID for the tire pressure monitoring system (TPMS) is not registered in the vehicle's second mode, which can affect TPMS functionality.
2. What are the common symptoms of code C2172 in a Scion?
The TPMS warning light will illuminate, and the system may not display tire pressures correctly or may fail to alert you to low tire pressure.
3. What causes the C2172 code to appear in a Scion?
This code is typically caused by unregistered or incorrectly programmed TPMS sensor IDs, sensor replacement without reprogramming, or a malfunction in the TPMS module.
4. Can a dead TPMS sensor battery trigger code C2172?
Yes, if the sensor battery is dead, the transmitter signal may fail, resulting in the code being triggered.
5. How can I fix code C2172 on my Scion?
The TPMS sensor IDs need to be registered or reprogrammed using a TPMS scan tool. If the sensors are faulty, they may need to be replaced.
6. Do I need special tools to resolve code C2172?
Yes, you’ll need a TPMS programmer or scan tool to register the transmitter IDs to the vehicle's system.
7. Can I drive my Scion with the C2172 code active?
While the vehicle is drivable, the TPMS system will not function properly, which could lead to driving on underinflated tires without warning.
8. How much does it cost to fix code C2172 in a Scion?
Costs vary but typically range from $50 to $150 for reprogramming or registering the sensors, and $50-$100 per sensor if replacement is needed.
9. Is it possible to prevent code C2172 on a Scion?
Ensure that any time a TPMS sensor is replaced or rotated, the transmitter IDs are properly registered using the correct tools.
10. Can a weak signal from a TPMS sensor cause code C2172?
Yes, if the sensor signal is weak due to interference or distance from the receiver, the system may fail to register the ID and trigger the code.
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