C2424 Subaru Code - Transmitter 4 Battery Voltage Decrease
Quick Answer
The Tire Pressure Monitor (TPM) system checks the tire pressures of all 4 road wheels when the vehicle is driven at speeds above 25 mph (40 km/h), and warns in the event of a loss of pressure by means of a low tire pressure warning light. Common causes include Tire pressure not to factory specifications, Faulty Tire Pressure Transmitter, Faulty Tire Pressure Monitor System (TPMS) Control Module. 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
- C2424 Subaru indicates Transmitter 4 Battery Voltage Decrease.
- Common causes
- Common causes include Tire pressure not to factory specifications, Faulty Tire Pressure Transmitter, Faulty Tire Pressure Monitor System (TPMS) Control Module.
- 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 C2424 Subaru Description
What are the Possible Causes of the DTC C2424 Subaru?
- Tire pressure not to factory specifications
- Faulty Tire Pressure Transmitter
- Faulty Tire Pressure Monitor System (TPMS) Control Module
How to Fix the DTC C2424 Subaru?
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.
Code Tech Notes
If the warning light is still on after adjusting tire pressure, check for a damaged tire and repair as necessary. If warning light blinks 25 times and then illuminates, and there is not a tire without a tire pressure sensor installed, there is a malfunction in the TPM system. See appropriate manufacturer service information.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C2424 Subaru 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 C2424 Subaru Code
1. What does the OBDII code C2424 mean on a Subaru?
C2424 indicates "Transmitter 4 Battery Voltage Decrease," which means the battery in the key fob or tire pressure monitoring sensor (TPMS) labeled as "Transmitter 4" has a low voltage.
2. What are the symptoms of the C2424 code on a Subaru?
Common symptoms include a TPMS warning light on the dashboard, inability to detect one of the tire pressure sensors, or issues with the key fob's functionality.
3. What causes the C2424 code to appear on a Subaru?
The primary cause is a low or depleted battery in the transmitter, which could be a TPMS sensor or a key fob. Other causes might include a faulty transmitter or wiring issues.
4. How do I fix the C2424 code on my Subaru?
Replace the battery in the affected transmitter (key fob or TPMS sensor). If the issue persists, inspect the transmitter for damage or replace it if necessary.
5. How can I identify which transmitter is "Transmitter 4"?
"Transmitter 4" typically refers to the fourth TPMS sensor in the system, often corresponding to a specific tire (e.g., rear-right). Consult a repair manual or use a TPMS scan tool to confirm the location.
6. Can I drive with the C2424 code on my Subaru?
Yes, but with caution. While the code itself isn’t critical, it may prevent accurate tire pressure monitoring or keyless entry operation, which could lead to safety risks if not addressed.
7. How much does it cost to fix the C2424 code?
Battery replacement for a key fob or TPMS sensor typically costs $5–$15. If a TPMS sensor needs replacement, the cost can range from $50–$150, plus labor.
8. Can a dead key fob battery trigger the C2424 code?
Yes, if the vehicle's system includes the key fob as one of its transmitters, a depleted key fob battery can trigger this code.
9. Do I need to reprogram the TPMS sensor after replacing its battery?
In most cases, no. However, some vehicles may require sensor reinitialization or relearning using a TPMS tool after the battery is replaced.
10. What tools can I use to diagnose the C2424 code?
Use an OBDII scanner capable of reading Subaru-specific codes, or a TPMS diagnostic tool to pinpoint which transmitter is causing the issue.
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