Engine-CodesBuick – P1A94 Buick

P1A94 Buick Code - 14-Volt Power Module Stuck ON

Quick Answer

The P1A94 Buick code indicates that the 14-volt power module in the vehicle is stuck in the ON position. Common causes include Malfunctioning power module, Wiring issue, Faulty voltage regulator. 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
P1A94 Buick indicates 14-Volt Power Module Stuck ON.
Common causes
Common causes include Malfunctioning power module, Wiring issue, Faulty voltage regulator.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P1A94 Buick Description

The P1A94 Buick code indicates that the 14-volt power module in the vehicle is stuck in the ON position. This module is responsible for regulating the voltage supplied to various electrical components in the vehicle. When this module is stuck ON, it means that it is continuously supplying 14 volts of power, which can lead to various issues within the vehicle's electrical system.

OBDII Code P1A94 Buick - 14-Volt Power Module Stuck ON
P1A94 Buick Code - 14-Volt Power Module Stuck ON

Common Causes of P1A94 Buick

  1. Malfunctioning power module
  2. Wiring issue
  3. Faulty voltage regulator
  4. Problem with the vehicle's computer system
  5. Corrosion or damage to electrical connections

Symptoms of P1A94 Buick

  1. Flickering lights
  2. Erratic behavior of electronic systems
  3. Battery draining quickly
  4. Electrical components not functioning properly
  5. Potential damage to sensitive components

How to Fix P1A94 Buick

  1. Diagnose the root cause of the issue by using a diagnostic scanner to read the fault codes and testing the power module and related components.
  2. Replace the 14-volt power module if it is found to be malfunctioning.
  3. Check and repair any damaged wiring or connections in the electrical system.
  4. Test the voltage regulator and replace if necessary.
  5. Clear the fault codes and reset the vehicle's computer system to ensure the issue is resolved.

Cost to Fix P1A94 Buick

The typical repair costs for addressing a P1A94 Buick code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. However, it's essential to note that rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. It's advisable to contact local repair shops for a more accurate estimate based on your vehicle make and model.

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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 P1A94 Buick Code

What does the OBDII code P1A94 mean on a Buick?

The P1A94 code indicates that the 14-volt power module in the vehicle is stuck in the "ON" position and is not functioning as expected.

What are the common symptoms of the P1A94 code?

Typical symptoms include an illuminated check engine light, decreased fuel efficiency, electrical system warnings, and potential battery charging issues.

What causes the P1A94 code to appear?

The common causes include a malfunctioning 14-volt power module, wiring or connector issues, or a fault in the powertrain control module (PCM).

Can I drive my Buick with the P1A94 code?

While the car may still be drivable, leaving this issue unaddressed can lead to further electrical or charging system problems over time.

How is the P1A94 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the 14-volt power module, check electrical connections, and test the related circuits for faults.

What repairs are typically needed for the P1A94 code?

Repairs may include replacing the 14-volt power module, repairing damaged wiring, or reprogramming or replacing the PCM if necessary.

Is the P1A94 code specific to Buick vehicles?

While this issue is more common in Buick models, the P1A94 code can potentially appear in other GM vehicles with similar systems.

How much does it cost to fix the P1A94 code?

The repair cost varies depending on the specific issue but can range from $300 to $1,000, including parts and labor.

Can a dead battery trigger the P1A94 code?

A weak or dead battery can sometimes contribute to electrical faults, but the P1A94 code is typically related to the 14-volt power module itself.

Does the P1A94 code require module reprogramming?

In some cases, reprogramming the powertrain control module (PCM) may be necessary if software-related issues are contributing to the code.

Discuss the causes and fixes for P1A94 Buick OBDII Code

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