AutoCodes – Generic – P3054

P3054 Code - DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage

Quick Answer

The Power Supply Transformer is used to boost battery voltage to sensitive loads during engine restart. Common causes include Faulty Power Supply Transformer, Power Supply Transformer harness is open or shorted, Power Supply Transformer 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: P3054 indicates DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage.
Common causes: Common causes include Faulty Power Supply Transformer, Power Supply Transformer harness is open or shorted, Power Supply Transformer 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 7,369

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 May 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P3054 Description

The Power Supply Transformer is used to boost battery voltage to sensitive loads during engine restart. It provides two voltage outputs that provide the boosted voltage. The Power Supply Transformer communicates to the Engine Control Module (ECM). When the engine is not cranking, the Power Supply Transformer passes through voltage from the two supply circuits. The ECM receives data about the sensed output voltages provided by the Power Supply Transformer.

OBDII Code P3054 - DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage - AutoCodes.com — P3054 Code - DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage

What does this mean?

What are the Possible Causes of the DTC P3054?

Faulty Power Supply Transformer
Power Supply Transformer harness is open or shorted
Power Supply Transformer circuit poor electrical connection

How to Fix the DTC P3054?

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 P3054 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 P3054 code?

Need more information on how to fix the P3054 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P3054 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P3054 Buick — DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage
P3054 Cadillac — DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage
P3054 Chevrolet — DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage
P3054 GMC — DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage

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 P3054 Code

1. What are common symptoms of OBDII code P3054?

- Common symptoms include poor fuel economy, reduced engine performance, and the illumination of the check engine light.

2. What does the OBDII code P3054 indicate?

- The code P3054 indicates a high voltage condition in the DC/DC converter actuator voltage sensor circuit 2.

3. What are possible causes of OBDII code P3054?

- Possible causes include a faulty DC/DC converter actuator voltage sensor, damaged wiring or connectors in the circuit, or issues with the powertrain control module (PCM).

4. How can I diagnose the OBDII code P3054?

- Diagnosing the code may involve using a scan tool to read the fault codes, inspecting the wiring and connectors for damage, and testing the DC/DC converter actuator voltage sensor.

5. Is it safe to continue driving with OBDII code P3054?

- It is not recommended to continue driving with the code present, as it can lead to further damage to the vehicle and potentially cause safety issues.

6. Can I repair OBDII code P3054 myself?

- Depending on your level of automotive knowledge, you may be able to repair the issue yourself by replacing the faulty sensor, repairing damaged wiring, or clearing the code with a scan tool.

7. How much does it typically cost to fix OBDII code P3054 at a repair shop?

- The cost of fixing the issue can vary depending on the root cause of the problem, but it may range from $100 to $300 at a repair shop.

8. Will OBDII code P3054 cause my vehicle to fail an emissions test?

- Yes, the presence of the code may cause your vehicle to fail an emissions test, as it indicates a problem with the emissions control system.

9. Can a bad battery trigger OBDII code P3054?

- A bad battery can potentially cause voltage irregularities that may trigger the code, so it's important to ensure your battery is in good condition when diagnosing the issue.

10. How can I prevent OBDII code P3054 from occurring in the future?

- Regular maintenance of your vehicle, including checking the charging system and sensors, can help prevent issues that may trigger the code P3054.