AutoCodes – Generic – P15C3

P15C3 Code - Intelligent Battery Sensor Wake-up Line Disconnection

Quick Answer

The Engine Control Module (ECM) monitors the Intelligent Battery Sensor (IBS). Common causes include Faulty Intelligent Battery Sensor (IBS), Intelligent Battery Sensor (IBS) harness is open or shorted, Intelligent Battery Sensor (IBS) circuit poor electrical connection. 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
P15C3 indicates Intelligent Battery Sensor Wake-up Line Disconnection.
Common causes
Common causes include Faulty Intelligent Battery Sensor (IBS), Intelligent Battery Sensor (IBS) harness is open or shorted, Intelligent Battery Sensor (IBS) circuit poor electrical connection.
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 2,473
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 03, 2020
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Code P15C3 Description

The Engine Control Module (ECM) monitors the Intelligent Battery Sensor (IBS). The ECM sets the OBDII code when the Intelligent Battery Sensor is not to factory specifications.
OBDII Code P15C3 - Intelligent Battery Sensor Wake-up Line Disconnection - AutoCodes.com
P15C3 Code - Intelligent Battery Sensor Wake-up Line Disconnection

What are the Possible Causes of the DTC P15C3?

  • Faulty Intelligent Battery Sensor (IBS)
  • Intelligent Battery Sensor (IBS) harness is open or shorted
  • Intelligent Battery Sensor (IBS) circuit poor electrical connection

How to Fix the DTC P15C3?

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 P15C3 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 P15C3 code?

Need more information on how to fix the P15C3 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P15C3 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P15C3 BMW β€” Intelligent Battery Sensor Wake-up Line Disconnection
  • P15C3 MINI β€” Intelligent Battery Sensor Wake-up Line Disconnection
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 P15C3 Code

1. What are common symptoms of OBDII code P15C3 (Intelligent Battery Sensor Wake-up Line Disconnection)?

The common symptoms of this code may include the illumination of the Check Engine light on the dashboard, issues with the start-stop system, and potential battery-related issues.

2. What can cause the OBDII code P15C3 to trigger?

This code is typically triggered when the Intelligent Battery Sensor wake-up line is disconnected or there is a fault in the wake-up line circuit.

3. How serious is the OBDII code P15C3?

While this code may not cause immediate drivability issues, it is important to address it promptly to prevent potential battery drain or other electrical system problems.

4. How can I diagnose the cause of OBDII code P15C3?

Diagnosing this code usually involves inspecting the Intelligent Battery Sensor wake-up line for any physical damage or disconnections, checking the related wiring harness, and testing the sensor itself for proper functioning.

5. Can I drive my vehicle with OBDII code P15C3?

It is generally safe to drive the vehicle with this code, but it is recommended to have it inspected and repaired as soon as possible to avoid potential electrical system issues.

6. How can I repair OBDII code P15C3?

Repairing this code often involves reconnecting or repairing the Intelligent Battery Sensor wake-up line, ensuring that the wiring is in good condition, and resetting the fault code using an OBDII scanner.

7. Can a DIY enthusiast fix OBDII code P15C3 at home?

While some DIY enthusiasts may be able to address this code at home, it is recommended to have a professional mechanic diagnose and repair the issue to ensure proper resolution.

8. How much does it cost to fix OBDII code P15C3 at a repair shop?

The cost of fixing this code can vary depending on the extent of the issue, labor rates in your area, and whether any parts need to be replaced. It is advisable to obtain quotes from reputable repair shops.

9. Will resetting the OBDII code P15C3 make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. It is essential to diagnose and repair the root cause of the problem to prevent the code from reoccurring.

10. How long does it take to repair OBDII code P15C3?

The repair time for this code can vary depending on the specific cause of the issue, the availability of parts, and the mechanic's experience. In general, it may take anywhere from a few hours to a full day to address this problem.

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