AutoCodes – Honda – P15A4 Honda

P15A4 Honda Code - AJC Compressor Driver Relay Stays Activated

Quick Answer

The Engine Control Module (ECM) monitors the AJC Compressor Driver Relay. Common causes include Faulty AJC Compressor Driver Relay, AJC Compressor Driver Relay harness is open or shorted, AJC Compressor Driver Relay 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: P15A4 Honda indicates AJC Compressor Driver Relay Stays Activated.
Common causes: Common causes include Faulty AJC Compressor Driver Relay, AJC Compressor Driver Relay harness is open or shorted, AJC Compressor Driver Relay 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 2,177

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 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P15A4 Honda Description

The Engine Control Module (ECM) monitors the AJC Compressor Driver Relay. The ECM sets the OBDII code when the AJC Compressor Driver Relay is not to factory specifications.

OBDII Code P15A4 Honda - AJC Compressor Driver Relay Stays Activated - AutoCodes.com — P15A4 Honda Code - AJC Compressor Driver Relay Stays Activated

What does this mean?

What are the Possible Causes of the DTC P15A4 Honda?

Faulty AJC Compressor Driver Relay
AJC Compressor Driver Relay harness is open or shorted
AJC Compressor Driver Relay circuit poor electrical connection

How to Fix the DTC P15A4 Honda?

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 P15A4 Honda 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 P15A4 Honda code?

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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.