AutoCodes – GMC – P3054 GMC

P3054 GMC 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 GMC 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 907
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 P3054 GMC 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 GMC - DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage - AutoCodes.com
P3054 GMC Code - DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage

What are the Possible Causes of the DTC P3054 GMC?

  • 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 GMC?

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 GMC 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 GMC code?

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

Need Help with the Code?

Get the P3054 GMC 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 P3054 GMC Code

1. What are common symptoms of OBDII code P3054 GMC?

The common symptoms of OBDII code P3054 GMC include poor fuel efficiency, difficulty starting the vehicle, and reduced engine performance.

2. What could cause the DC/DC Converter Actuator Voltage Sensor Circuit 2 High Voltage error code?

The P3054 GMC code is typically triggered by issues such as a faulty DC/DC converter actuator voltage sensor, damaged wiring in the circuit, or a problem with the voltage sensor itself.

3. How serious is the P3054 GMC error code?

While the P3054 GMC code may not cause immediate harm to the vehicle, it can lead to decreased fuel efficiency and engine performance if left unresolved. It is recommended to address the issue promptly to avoid further complications.

4. Can I continue driving with the P3054 GMC code present?

It is not recommended to continue driving with the P3054 GMC code active, as it can negatively impact the vehicle's performance and fuel economy. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose the cause of the P3054 GMC error code?

Diagnosing the P3054 GMC code typically involves using an OBDII scanner to retrieve the specific fault codes, inspecting the DC/DC converter actuator voltage sensor circuit for any visible damage, and testing the voltage sensor for proper functionality.

6. What are some repair tips for resolving the P3054 GMC code?

Repairing the P3054 GMC code may involve replacing the faulty DC/DC converter actuator voltage sensor, repairing any damaged wiring in the circuit, or resetting the fault codes after addressing the underlying issue.

7. Can a DIY enthusiast fix the P3054 GMC error code?

While some DIY enthusiasts may be able to address the P3054 GMC code themselves, it is recommended to have a professional mechanic diagnose and repair the issue to ensure it is properly resolved.

8. How much does it typically cost to repair the P3054 GMC error code?

The cost of repairing the P3054 GMC code can vary depending on the underlying cause of the issue, the extent of the repairs needed, and the labor rates of the mechanic. It is advisable to obtain quotes from different repair shops for an accurate estimate.

9. Is the P3054 GMC error code covered under warranty?

Depending on the vehicle's warranty coverage, the repair for the P3054 GMC code may be covered if the issue is determined to be a manufacturer defect. It is recommended to check with the dealership or warranty provider for more information.

10. How can I prevent the P3054 GMC error code from recurring?

To prevent the P3054 GMC code from recurring, it is essential to perform regular maintenance on the vehicle, address any underlying issues promptly, and follow the manufacturer's recommended service schedule.

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