AutoCodes – Cadillac – P3055 Cadillac

P3055 Cadillac 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 Cadillac 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,712
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 16, 2019
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Code P3055 Cadillac 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 Cadillac - DC/DC Converter Actuator Voltage 1 Performance - AutoCodes.com
P3055 Cadillac Code - DC/DC Converter Actuator Voltage 1 Performance

What are the Possible Causes of the DTC P3055 Cadillac?

  • 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 Cadillac?

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 Cadillac 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 P3055 Cadillac code?

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Need Help with the Code?

Get the P3055 Cadillac 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 Cadillac Code

1. What are the common symptoms of OBDII code P3055 in a Cadillac related to the DC/DC Converter Actuator Voltage 1 Performance?

- Common symptoms may include poor fuel economy, reduced engine performance, and potential stalling or hesitation issues.

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

- Possible causes can include a faulty DC/DC converter actuator, wiring issues, a malfunctioning sensor, or problems with the vehicle's powertrain control module.

3. How can I diagnose OBDII code P3055 in a Cadillac related to the DC/DC Converter Actuator Voltage 1 Performance?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the related components for any visible damage, and conducting electrical tests to pinpoint the issue.

4. Can I continue driving my Cadillac with OBDII code P3055 related to the DC/DC Converter Actuator Voltage 1 Performance?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage and potentially unsafe driving conditions.

5. Is it possible to reset OBDII code P3055 related to the DC/DC Converter Actuator Voltage 1 Performance in a Cadillac?

- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

6. How much does it typically cost to repair OBDII code P3055 related to the DC/DC Converter Actuator Voltage 1 Performance in a Cadillac?

- Repair costs can vary depending on the specific cause of the issue, but it is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.

7. Are there any DIY repair tips for addressing OBDII code P3055 related to the DC/DC Converter Actuator Voltage 1 Performance in a Cadillac?

- DIY repairs for this code may include checking and cleaning electrical connections, inspecting wiring for damage, and replacing the DC/DC converter actuator if necessary.

8. Will OBDII code P3055 related to the DC/DC Converter Actuator Voltage 1 Performance affect my Cadillac's emissions performance?

- Yes, this code can impact your vehicle's emissions performance, potentially leading to increased emissions and failing an emissions test.

9. Can extreme weather conditions contribute to triggering OBDII code P3055 related to the DC/DC Converter Actuator Voltage 1 Performance in a Cadillac?

- Extreme weather conditions such as extreme heat or cold can sometimes exacerbate underlying issues that may trigger this code, so it is important to keep your vehicle well maintained.

10. How long does it typically take to repair OBDII code P3055 related to the DC/DC Converter Actuator Voltage 1 Performance in a Cadillac?

- Repair times can vary depending on the complexity of the issue and availability of parts, but it is advisable to consult a professional mechanic for a more accurate timeframe.

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