AutoCodes - OBDII Code List - P3054 CADILLAC

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

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

P3054 CADILLAC Possible Causes

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

How do I fix code P3054 CADILLAC?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the P3054 CADILLAC code

Labor: 1.0

The cost of diagnosing the P3054 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

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

More Information

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Repair Importance Level: 3
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