AutoCodes – Subaru – C2423 Subaru

C2423 Subaru Code - Transmitter 3 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
C2423 Subaru indicates Transmitter 3 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.
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Code Popularity 2,237
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code C2423 Subaru Description

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. A sensor installed in each wheel will indicate when tire pressure is severely low. The TPM system will activate only when the vehicle is driven. The Tire Pressure Monitor System (TPMS) Control Module monitors the tire pressure at each wheel. The TPMS Control Module sets the OBDII code when the tire pressure signal is not to factory specifications.
OBDII Code C2423 Subaru - Transmitter 3 Battery Voltage Decrease - AutoCodes.com
C2423 Subaru Code - Transmitter 3 Battery Voltage Decrease

What are the Possible Causes of the DTC C2423 Subaru?

  • Tire pressure not to factory specifications
  • Faulty Tire Pressure Transmitter
  • Faulty Tire Pressure Monitor System (TPMS) Control Module

How to Fix the DTC C2423 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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C2423 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.

Need more information about the C2423 Subaru code?

Need more information on how to fix the C2423 Subaru code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C2423 Subaru code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C2423 Subaru Code

1. What are common symptoms of OBDII code C2423 in a Subaru related to "Transmitter 3 Battery Voltage Decrease"?

The common symptoms include issues with the keyless entry system, such as difficulty unlocking or locking the doors remotely.

2. What could cause OBDII code C2423 in a Subaru indicating "Transmitter 3 Battery Voltage Decrease"?

The code C2423 is typically triggered when there is a problem with the battery voltage of the third transmitter, often due to a faulty transmitter or a weak battery.

3. How can I diagnose the cause of OBDII code C2423 in my Subaru for "Transmitter 3 Battery Voltage Decrease"?

To diagnose the issue, you can start by checking the battery of the third transmitter, ensuring it has enough power. If the battery is fine, you may need to inspect the transmitter itself for any damage.

4. Is it safe to continue driving my Subaru with OBDII code C2423 related to "Transmitter 3 Battery Voltage Decrease"?

While it is generally safe to drive with this code, it is advisable to address the issue promptly to avoid any inconvenience with the keyless entry system.

5. Can I reset OBDII code C2423 in my Subaru indicating "Transmitter 3 Battery Voltage Decrease" without fixing the underlying problem?

Resetting the code without addressing the root cause, such as replacing the faulty transmitter or battery, may only provide a temporary solution as the issue is likely to recur.

6. Are there any DIY repair tips for fixing OBDII code C2423 in a Subaru due to "Transmitter 3 Battery Voltage Decrease"?

If you are familiar with automotive electronics, you can attempt to replace the battery in the third transmitter yourself following the manufacturer's instructions.

7. Will replacing the transmitter battery resolve OBDII code C2423 in my Subaru for "Transmitter 3 Battery Voltage Decrease"?

In many cases, replacing the battery in the third transmitter can resolve the code C2423, restoring normal operation of the keyless entry system.

8. How much does it typically cost to repair OBDII code C2423 in a Subaru related to "Transmitter 3 Battery Voltage Decrease"?

The cost of repairing this issue can vary depending on whether you replace the transmitter battery yourself or seek professional assistance. It is usually an affordable repair.

9. Can extreme weather conditions affect OBDII code C2423 in a Subaru due to "Transmitter 3 Battery Voltage Decrease"?

Extreme temperatures can impact battery performance, potentially leading to a decrease in transmitter battery voltage and triggering the C2423 code.

10. Is it necessary to visit a dealership for OBDII code C2423 in a Subaru related to "Transmitter 3 Battery Voltage Decrease"?

While visiting a dealership is an option, you can also address this issue at an independent repair shop or even handle it yourself if you are comfortable working on your vehicle's electronics.

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