AutoCodes – Honda – P0A94 2018 Honda CR-V

P0A94 2018 Honda CR-V Code - DC-DC Converter Performance Problem

Quick Answer

The auto idle stop system equipped vehicle uses the DC-DC converter to prevent electronic accessory reset due to 12 volt battery voltage lowering when recovering (starter motor running) from idle stop condition. Common causes include Faulty DC-DC Converter, DC-DC Converter harness is open or shorted, DC-DC Converter 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: P0A94 2018 Honda CR-V indicates DC-DC Converter Performance Problem.
Common causes: Common causes include Faulty DC-DC Converter, DC-DC Converter harness is open or shorted, DC-DC Converter 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 55

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 Jun 23, 2025

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0A94 2018 Honda CR-V Description

The auto idle stop system equipped vehicle uses the DC-DC converter to prevent electronic accessory reset due to 12 volt battery voltage lowering when recovering (starter motor running) from idle stop condition. The DC-DC converter is connected with DCDC STS line which the Powertrain Control Module (PCM) sends a voltage boost request and the Local Interconnect Network (LIN) line which the DC-DC converter sends a diagnostic results to the PCM. When the self-diagnostic circuit in the DC-DC converter detects a failure, it is noticed to the PCM via the LIN line. If the PCM receives a DC-DC converter failure information for a set time, the PCM detects a DC-DC converter performance problem and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0A94 2018 Honda CR-V - DC-DC Converter Performance Problem - AutoCodes.com — P0A94 2018 Honda CR-V Code - DC-DC Converter Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0A94 2018 Honda CR-V?

Faulty DC-DC Converter
DC-DC Converter harness is open or shorted
DC-DC Converter circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0A94 2018 Honda CR-V?

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 P0A94 2018 Honda CR-V 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 P0A94 2018 Honda CR-V code?

Need more information on how to fix the P0A94 2018 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0A94 2018 Honda CR-V 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 P0A94 2018 Honda CR-V Code

What does the OBDII code P0A94 mean in a 2018 Honda CR-V?

The P0A94 code indicates a DC-DC Converter Performance Problem, which affects the electrical system's ability to manage voltage levels.

What are the common symptoms of a P0A94 code on a 2018 Honda CR-V?

Symptoms may include warning lights like the check engine light, reduced fuel efficiency, electrical system malfunctions, or difficulty starting the vehicle.

What causes the P0A94 code in a 2018 Honda CR-V?

Possible causes include a faulty DC-DC converter, damaged wiring or connectors, overheating of the converter, or issues with the hybrid battery system.

Can I drive my 2018 Honda CR-V with the P0A94 code?

Driving with this code is not recommended, as it can lead to further electrical system damage or even leave you stranded if the vehicle fails to start.

How is the P0A94 code diagnosed on a 2018 Honda CR-V?

A mechanic will use an OBDII scanner to retrieve the code, inspect the DC-DC converter, check for damaged wiring or connectors, and test the hybrid battery system.

How much does it typically cost to fix the P0A94 code on a 2018 Honda CR-V?

Repair costs can range from $500 to $1,500, depending on whether the DC-DC converter needs replacing and if additional electrical repairs are required.

Can a bad hybrid battery trigger the P0A94 code in a 2018 Honda CR-V?

Yes, a failing hybrid battery can cause the DC-DC converter to malfunction, potentially triggering this code.

What is the function of the DC-DC converter in a 2018 Honda CR-V?

The DC-DC converter regulates voltage between the high-voltage hybrid battery and the vehicle's 12V electrical system.

How can I prevent the P0A94 code from occurring on my 2018 Honda CR-V?

Regular maintenance, avoiding electrical overloads, and ensuring proper cooling for the converter can help prevent this issue.

Is the P0A94 code specific to hybrid or electric vehicles?

Yes, this code is typically associated with hybrid or electric vehicles, as it relates to the DC-DC converter that manages voltage between high-voltage and low-voltage systems.