AutoCodes – Honda – P0A94 2021 Honda CR-V

P0A94 2021 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 2021 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 87
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 23, 2025
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Code P0A94 2021 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 2021 Honda CR-V - DC-DC Converter Performance Problem - AutoCodes.com
P0A94 2021 Honda CR-V Code - DC-DC Converter Performance Problem

What are the Possible Causes of the DTC P0A94 2021 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 2021 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 2021 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 2021 Honda CR-V code?

Need more information on how to fix the P0A94 2021 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0A94 2021 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 2021 Honda CR-V Code

What does the OBDII code P0A94 mean on a 2021 Honda CR-V?

The P0A94 code indicates a DC-DC Converter Performance Problem, meaning the system that converts high-voltage battery power to 12V for standard vehicle electronics is malfunctioning.

What are common symptoms of the P0A94 code in a 2021 Honda CR-V?

Common symptoms include warning lights on the dashboard, such as the Check Engine Light or hybrid system warning, dimming headlights, or a drained 12V battery.

What causes the P0A94 code in a 2021 Honda CR-V?

The P0A94 code can be caused by a faulty DC-DC converter, damaged wiring or connectors, a failed 12V battery, or issues with the high-voltage battery system.

Can I drive my 2021 Honda CR-V with the P0A94 code active?

Driving with the P0A94 code is not recommended, as a malfunctioning DC-DC converter can lead to loss of power to critical systems and potentially leave you stranded.

How is the P0A94 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the DC-DC converter and its wiring for damage, test the 12V battery, and verify proper operation of the high-voltage system.

How much does it cost to fix the P0A94 code on a 2021 Honda CR-V?

Repair costs vary, but replacing a DC-DC converter can range from $500 to $1500, depending on labor rates and parts prices.

Can a weak 12V battery trigger the P0A94 code?

Yes, a weak or failing 12V battery can cause the DC-DC converter to work harder, potentially setting the P0A94 code.

What happens if the DC-DC converter fails completely?

If the DC-DC converter fails, the 12V battery will not charge, leading to loss of power for lights, accessories, and possibly the ability to start the vehicle.

Is the P0A94 code covered under warranty for a 2021 Honda CR-V?

It may be covered under the hybrid or emissions warranty, but coverage depends on mileage, time since purchase, and warranty terms. Contact your dealer for verification.

Can the P0A94 code be cleared without fixing the issue?

Clearing the code without addressing the underlying issue will likely cause it to reappear, as the root problem with the DC-DC converter needs to be resolved.

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