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July 14, 2025

Decoding the P132B: Your Guide to the 6.4 Power Stroke Actuator Update

Educational
Tara Lunder
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If you own a 6.4 Power Stroke and have encountered the dreaded P132B trouble code, you know how frustrating it can be. This common diagnostic trouble code often points directly to issues with your engine’s actuator. At Alliant Power, we’ve seen this problem countless times, and we’re here to break down what’s happening and, more importantly, how to fix it with an updated solution.

What is the P132B Code and What Causes It?

The P132B code specifically indicates an issue with the variable geometry turbocharger (VGT) control circuit, often pointing to the actuator that controls the turbo’s vanes. The original 6.4 Power Stroke actuators were known for a common failure point: stripped plastic gears. Over time, these gears would wear down, causing the actuator to skip or even lock up. This prevents the turbo from adjusting properly, leading to symptoms like reduced power, poor fuel economy, and, of course, that persistent P132B code.

How Can You Check Your 6.4 Power Stroke Actuator?

Before diving into a replacement, there’s a simple way to perform a quick check to see if your actuator is getting power and attempting to move. With the key turned to the “on” position, observe the actuator. You should see a small rod move as the system initializes. If you don’t see this movement, or if it’s erratic, it’s a strong indicator that the actuator is failing or has already failed.

The Solution: An Updated, More Durable Actuator

The good news for 6.4 Power Stroke owners is that there’s an improved solution available. BorgWarner has released an updated brushless motor actuator specifically designed to address the shortcomings of the original part.

What makes this new actuator better?

  • No More Plastic Gears: The brushless motor design inherently avoids the stripped plastic gear issue common in older units, leading to significantly increased durability.
  • Eliminates Water Cooling: A major design change is the removal of the water cooling system found in the original actuators. This eliminates a potential leak point and simplifies the overall system, contributing to greater reliability.
  • Longer-Lasting Performance: This updated design means you’re installing a part that’s built to last, reducing the likelihood of recurring P132B codes and subsequent downtime.

Is Installation Difficult?

Installing the new, updated actuator is a relatively straightforward process. The main difference you’ll notice is the need to reroute one coolant line and remove another, due to the new actuator’s lack of water cooling. Our technical support resources, including videos, can guide you through these simple steps, ensuring a smooth replacement.

Get Your 6.4 Power Stroke Running Strong Again

If you’re dealing with a P132B code, don’t let it keep your 6.4 Power Stroke sidelined. Understanding the cause and knowing about the updated actuator is the first step toward a reliable fix. The new brushless motor actuator from BorgWarner offers a durable, long-term solution, getting your engine back to peak performance.