AutoCodes – Generic – P15BA

P15BA Code - Electric A/C Compressor Control Module Ignition On/Start Switch Circuit High Voltage

Quick Answer

The Body Control Module (BCM) controls the ignition run relay through the control circuit by applying voltage to the circuit. Common causes include Faulty Hybrid Powertrain Control Module 2, Hybrid Powertrain Control Module 2 harness is open or shorted, Hybrid Powertrain Control Module 2 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: P15BA indicates Electric A/C Compressor Control Module Ignition On/Start Switch Circuit High Voltage.
Common causes: Common causes include Faulty Hybrid Powertrain Control Module 2, Hybrid Powertrain Control Module 2 harness is open or shorted, Hybrid Powertrain Control Module 2 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 1,315

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P15BA Description

The Body Control Module (BCM) controls the ignition run relay through the control circuit by applying voltage to the circuit. The ignition circuit is energized when the vehicle power mode is Vehicle ON or Vehicle in Service Mode. The hybrid powertrain control module 2 sends the vehicle power mode status in a serial data message to the battery charger control module, A/C compressor, battery energy control module, fuel pump control module and the Transmission Control Module (TCM).

OBDII Code P15BA - Electric A/C Compressor Control Module Ignition On/Start Switch Circuit High Voltage - AutoCodes.com — P15BA Code - Electric A/C Compressor Control Module Ignition On/Start Switch Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P15BA?

Faulty Hybrid Powertrain Control Module 2
Hybrid Powertrain Control Module 2 harness is open or shorted
Hybrid Powertrain Control Module 2 circuit poor electrical connection

How to Fix the DTC P15BA?

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 P15BA 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 P15BA code?

Need more information on how to fix the P15BA code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P15BA code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P15BA Acura — Check Valve Intake Manifold Stuck Closed
P15BA Buick — Electric A/C Compressor Control Module Ignition On/Start Switch Circuit High Voltage
P15BA Cadillac — Electric A/C Compressor Control Module Ignition On/Start Switch Circuit High Voltage
P15BA Chevrolet — Electric A/C Compressor Control Module Ignition On/Start Switch Circuit High Voltage
P15BA GMC — Electric A/C Compressor Control Module Ignition On/Start Switch Circuit High Voltage
P15BA Honda — Check Valve Intake Manifold Stuck Closed

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 P15BA Code

What does the OBDII code P15BA mean?

P15BA indicates a high voltage issue in the Electric A/C Compressor Control Module Ignition On/Start Switch Circuit, which may prevent proper operation of the A/C system.

What are the common symptoms of code P15BA?

Typical symptoms include reduced or no air conditioning function, a noticeable decrease in cooling performance, and the illumination of the check engine light.

What causes code P15BA?

The code can be triggered by issues such as a faulty Electric A/C Compressor Control Module, wiring problems like shorts or opens, or a malfunction in the ignition switch circuit.

Can code P15BA affect the vehicleâ€™s performance?

While it primarily impacts the A/C system, a malfunctioning module could indirectly affect overall electrical performance or efficiency depending on the severity of the issue.

How is code P15BA diagnosed?

Technicians typically use a diagnostic scanner to confirm the code, inspect the wiring and connectors for damage, and test the A/C compressor control module and ignition circuit for faults.

Can I fix code P15BA myself?

If you are experienced in automotive repairs, you can check for damaged wiring or loose connectors. However, replacing or repairing the module may require professional expertise.

How much does it cost to repair code P15BA?

Repair costs can vary widely, typically ranging from $150 to $500 or more, depending on whether the issue lies in the wiring, control module, or another component.

Is it safe to drive with code P15BA?

Driving is generally safe, but your A/C system might not function properly. Ignoring the issue could lead to further electrical problems over time.

Do I need to replace the Electric A/C Compressor Control Module for code P15BA?

Not always. The issue might be related to wiring or connectors. The module only needs replacement if testing confirms it is the source of the problem.

Can a weak battery cause code P15BA?

In rare cases, a weak or failing battery can cause electrical irregularities that might trigger this code. Testing the battery is a good precaution during diagnosis.