Engine-CodesSubaru – C2423 Subaru

C2423 Subaru Code - Transmitter 3 Battery Voltage Decrease

Quick Answer

The C2423 diagnostic trouble code (DTC) for Subaru vehicles indicates a decrease in battery voltage for Transmitter 3. Common causes include Failing transmitter battery, Poor electrical connections, Internal faults within the transmitter. 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 Failing transmitter battery, Poor electrical connections, Internal faults within the transmitter.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code C2423 Subaru Description

The C2423 diagnostic trouble code (DTC) for Subaru vehicles indicates a decrease in battery voltage for Transmitter 3. In modern vehicles, transmitters are used for keyless entry systems, remote starters, and other convenience features. When the battery voltage for Transmitter 3 decreases, it can lead to various issues with these systems.

OBDII Code C2423 Subaru - Transmitter 3 Battery Voltage Decrease
C2423 Subaru Code - Transmitter 3 Battery Voltage Decrease

Common Causes of C2423 Subaru

  1. Failing transmitter battery
  2. Poor electrical connections
  3. Internal faults within the transmitter
  4. Environmental factors affecting battery performance
  5. Wear and tear over time

Symptoms of C2423 Subaru

  1. Keyless entry system not working consistently
  2. Remote start feature malfunctioning
  3. Vehicle not responding to key fob commands
  4. Warning light on the dashboard related to keyless entry system

How to Fix C2423 Subaru

  1. Replace the battery in Transmitter 3
  2. Check and clean electrical connections
  3. Test the transmitter's functionality
  4. Replace the transmitter if internal faults are found
  5. Reset the keyless entry system if necessary

Cost to Fix C2423 Subaru

The cost of repairing the Transmitter 3 battery voltage decrease issue can vary depending on the specific cause and the labor rates in your area. In general, replacing the transmitter battery and checking electrical connections may cost between $50 to $150. If the transmitter itself needs to be replaced, the total repair cost could range from $100 to $300. It's recommended to get a detailed quote from a trusted auto repair shop to accurately determine the cost for your specific vehicle. Labor rates typically range from $80 to $150 per hour, but can vary based on location and shop rates.

Tech Notes for C2423 Subaru

When the low tire pressure warning light illuminates, immediately check the air pressure of all tires and adjust to the specified pressure. After adjusting air pressure, drive the vehicle at 25 mph (40 km/h) or more to start TPM system re-checking of the tire inflation pressures. Warning light should turn off in a few minutes.

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.

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.

Discuss the causes and fixes for C2423 Subaru OBDII Code

Code C2423 Subaru comments

No comments found for this page.