AutoCodesGeneric – P15CE

P15CE Code - Intelligent Battery Sensor Wake-up Line Short Circuit To B+ Or Earth

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
P15CE indicates Intelligent Battery Sensor Wake-up Line Short Circuit To B+ Or Earth.
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 4,584
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 P15CE 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 P15CE - Intelligent Battery Sensor Wake-up Line Short Circuit To B+ Or Earth - AutoCodes.com
P15CE Code - Intelligent Battery Sensor Wake-up Line Short Circuit To B+ Or Earth

What are the Possible Causes of the DTC P15CE?

  • 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 P15CE?

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 P15CE 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 P15CE code?

Need more information on how to fix the P15CE code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P15CE code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P15CE BMW — Intelligent Battery Sensor Wake-up Line Short Circuit To B+ Or Earth
  • P15CE MINI — Intelligent Battery Sensor Wake-up Line Short Circuit To B+ Or Earth
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 P15CE Code

1. What does the OBDII code P15CE mean?

The P15CE code indicates an issue with the Intelligent Battery Sensor (IBS), specifically a short circuit in the wake-up line to either the battery's positive terminal (B+) or ground (Earth).

2. What are the common symptoms of the P15CE code?

Symptoms may include a check engine light, issues with battery charging, erratic electrical behavior, or trouble starting the vehicle.

3. What causes the P15CE code to appear?

This code is typically caused by damaged wiring, corroded connectors, a faulty Intelligent Battery Sensor, or a short circuit in the wake-up line.

4. Can I continue driving with the P15CE code active?

While the vehicle may still be drivable, ignoring the issue can lead to further battery or electrical system problems. It’s best to address the issue promptly.

5. How do I diagnose the P15CE code?

Start by inspecting the IBS wake-up line for damaged wiring, corrosion, or loose connections. Use a multimeter to check for shorts or continuity issues.

6. How can I fix the P15CE code?

Repairs may involve replacing damaged wiring, cleaning corroded connectors, or replacing the Intelligent Battery Sensor if it’s faulty.

7. Is the Intelligent Battery Sensor (IBS) expensive to replace?

The cost varies by vehicle, but the part itself is generally affordable. Labor costs may add up depending on the complexity of the replacement.

8. Can a weak battery cause the P15CE code?

A weak or failing battery is not a direct cause but can contribute to electrical issues that might trigger the code. Testing the battery is a good step during diagnosis.

9. Does the P15CE code affect fuel efficiency?

This code doesn’t directly affect fuel efficiency, but unresolved electrical issues might lead to suboptimal engine performance over time.

10. Can I clear the P15CE code without fixing the issue?

You can clear the code with an OBDII scanner, but it will likely return unless the underlying problem is resolved.

Discuss the causes and fixes for P15CE OBDII Code

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