AutoCodes – Chevrolet – P3055 Chevrolet

P3055 Chevrolet Code - DC/DC Converter Actuator Voltage 1 Performance

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: P3055 Chevrolet indicates DC/DC Converter Actuator Voltage 1 Performance.
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 41,219

How popular is this code, among other codes? Medium

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 P3055 Chevrolet 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 P3055 Chevrolet - DC/DC Converter Actuator Voltage 1 Performance - AutoCodes.com — P3055 Chevrolet Code - DC/DC Converter Actuator Voltage 1 Performance

What does this mean?

What are the Possible Causes of the DTC P3055 Chevrolet?

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

How to Fix the DTC P3055 Chevrolet?

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 P3055 Chevrolet 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.

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Need Help with the Code?

Get the P3055 Chevrolet 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 P3055 Chevrolet Code

1. What are common symptoms of OBDII code P3055 in a Chevrolet vehicle?

- Common symptoms include poor fuel efficiency, loss of power, and potential issues with the hybrid battery system.

2. What causes the OBDII code P3055 in a Chevrolet related to the DC/DC Converter Actuator Voltage 1 Performance?

- The code P3055 is typically triggered by a malfunction in the DC/DC converter, a faulty actuator, or issues with the voltage control system.

3. How serious is the OBDII code P3055 in a Chevrolet and should it be repaired immediately?

- The code P3055 can affect the vehicle's performance and fuel efficiency, so it is recommended to address the issue promptly to prevent further damage.

4. Can I still drive my Chevrolet with the OBDII code P3055 present?

- It is not recommended to continue driving the vehicle with the code P3055 present, as it can lead to more severe issues if left unattended.

5. How can I diagnose the OBDII code P3055 in my Chevrolet at home?

- You can use an OBDII scanner to retrieve the fault code and then inspect the DC/DC converter, actuator, and related components for any visible damage or loose connections.

6. What are some DIY repair tips for fixing the OBDII code P3055 in a Chevrolet?

- DIY repair tips include checking and tightening electrical connections, inspecting for damaged wiring, and possibly replacing the DC/DC converter or actuator if necessary.

7. Is it recommended to reset the OBDII code P3055 in a Chevrolet after making repairs?

- Yes, it is recommended to reset the code using an OBDII scanner after addressing the underlying issue to clear the warning light and monitor for any recurrence.

8. How much does it typically cost to repair the OBDII code P3055 in a Chevrolet at a dealership or repair shop?

- The cost of repairs for the OBDII code P3055 can vary depending on the extent of the issue, but it may range from $200 to $600 at a dealership or repair shop.

9. Are there any common mistakes to avoid when dealing with the OBDII code P3055 in a Chevrolet?

- Common mistakes include ignoring the warning signs, attempting repairs without proper diagnosis, and neglecting regular maintenance of the hybrid system.

10. Can the OBDII code P3055 in a Chevrolet be related to other codes or issues in the vehicle?

- Yes, the code P3055 may be related to other hybrid system codes or issues, so it is important to conduct a thorough diagnosis to identify all potential problems.