Can Am Defender Power Steering Problems – Your Complete DIY Diagnostic

You’re deep on the trail, miles from the truck, and suddenly your steering wheel feels like it’s set in concrete. The familiar ease of your Can-Am Defender’s Dynamic Power Steering (DPS) is gone, replaced by a gut-wrenching arm workout. A quick glance at the dash confirms your fear: the dreaded “DPS” warning light is glowing.

We’ve all been there, and we agree—it’s one of the most frustrating things that can happen on a ride. It can instantly ruin a day of work or fun.

But here’s the good news. I promise this guide will walk you through everything you need to know. We’re going to break down the most common can am defender power steering problems, from the simple fixes you can do in 10 minutes with basic tools to the more complex issues that tell you it’s time to see a pro.

In this article, you’ll get a complete can am defender power steering problems guide. We’ll cover identifying the symptoms, pinpointing the electrical and mechanical culprits, and a step-by-step diagnostic checklist. Let’s get your rig steering like new again.

Recognizing the Signs: Common Symptoms of DPS Failure

Before we grab our tools, it’s crucial to know exactly what you’re looking for. The DPS system on your Defender is fantastic when it works, but its failure can manifest in a few distinct ways. Being able to describe the symptom is the first step in a successful diagnosis.

Here are the tell-tale signs that you’re dealing with power steering issues:

  • Heavy or Stiff Steering: This is the most obvious symptom. The steering becomes incredibly difficult to turn, especially at low speeds or a complete stop. It feels like a machine from the pre-power-steering era.
  • Intermittent Assist: The power steering might cut in and out. It could work perfectly for a few minutes and then disappear, only to return later. This often points to a loose connection or a component on the verge of failure.
  • Warning Lights: Your Defender’s dash is your best friend. A “DPS” warning, “Check Engine” light, or even a limp mode notification are clear indicators that the machine’s computer has detected a fault in the system.
  • Strange Noises: Listen closely when you turn the wheel. A high-pitched whine, a grinding sound, or a clicking noise can indicate a problem within the DPS motor or mechanical binding in the steering column.
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  • “Notchy” or Inconsistent Feeling: The steering might feel like it has “dead spots” or catches as you turn. It won’t feel smooth and linear like it should.

The Usual Suspects: Common Problems with Can Am Defender Power Steering Problems

Alright, now that you know the symptoms, let’s get into the “why.” In our experience at the shop, over 90% of DPS issues fall into a few key categories. The great news is that most of them are electrical, and many are simple fixes. This section covers the most common problems with can am defender power steering problems.

Electrical Gremlins: The #1 Culprit

Your Defender’s DPS is an Electronic Power Steering (EPS) system. It relies on a steady stream of clean electricity to function. Any interruption or fluctuation in that power is the fastest way to cause a failure.

Low Battery Voltage: The DPS motor is power-hungry. A weak, old, or undercharged battery is the absolute most common cause of power steering failure. If your battery can’t supply a consistent 12+ volts, the DPS module will be the first thing to shut down to save power for the engine.

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Bad Grounds: Your Defender’s electrical system is a loop. Power flows from the battery, and it must return through the frame via ground wires. These grounds can become corroded, caked in mud, or vibrate loose, creating a weak connection that starves the DPS unit of the power it needs.

Fuses and Relays: The simplest components can cause the biggest headaches. A single blown fuse or a faulty relay in the DPS circuit will kill the system instantly. This is always one of the first places to look.

Damaged Wiring Harness: Off-roading is tough on equipment. Wires can get pinched, chafed by rubbing against the frame, or damaged by trail debris. A short or a break in the wiring to the DPS unit is a guaranteed failure.

Sensor and Module Failures

If the core electrical supply is good, the next place to look is at the system’s brain and sensors. These components are more complex but can certainly fail.

The Steering Angle Sensor (or Torque Sensor) is a critical part. It tells the DPS module how much you’re turning the wheel and how much force you’re applying. If this sensor fails, the module doesn’t know how much assistance to provide, so it usually shuts the system off as a safety measure.

The DPS Module itself is the computer that controls the whole operation. While it’s a robust unit, it can fail due to water intrusion, voltage spikes, or internal faults. This is typically a last resort diagnosis after everything else has been ruled out.

Mechanical Issues (Less Common but Possible)

Sometimes, the problem isn’t with the power steering system at all! A mechanical issue can make the steering so stiff that it feels like the DPS has failed.

Check for binding in the steering shaft U-joints. These can rust up or get packed with dirt. Also, inspect your front-end components like tie rod ends and ball joints. If they are worn out and seized, they can create immense resistance that the DPS motor struggles to overcome.

Your Step-by-Step Diagnostic Guide: How to Troubleshoot Like a Pro

Ready to get your hands dirty? Follow this logical process to find the root cause of your issue. This is the exact procedure we use in the shop to ensure we don’t miss anything. You’ll need a few basic tools: a set of sockets/wrenches, a wire brush, and a multimeter.

  1. Start with the Obvious: The Battery is King

    Before you do anything else, check the battery. Set your multimeter to DC volts. A healthy, fully charged battery should read at least 12.6 volts with the machine off. With the engine running, it should be putting out over 13.5 volts at idle. If it’s below these numbers, your battery or charging system is the problem. Also, ensure the terminals are clean and tight!

  2. Inspect Fuses and Relays

    Locate your fuse box (check your owner’s manual for the exact location). Find the fuse labeled for the DPS system. Pull it out and visually inspect it. If the small metal strip inside is broken, it’s blown. Replace it with a fuse of the exact same amperage. If there’s a relay, you can often swap it with an identical relay from a non-critical system (like the horn) to see if the problem moves.

  3. Chase the Grounds

    This is a crucial step in our how to can am defender power steering problems guide. Find the main ground strap from the battery to the frame and the engine to the frame. Unbolt them, use a wire brush to clean the connector and the frame contact point until they are shiny, and bolt them back down securely. A little dielectric grease on the connection can help prevent future corrosion.

  4. Check for Fault Codes

    Your Defender can tell you what’s wrong. You can often access fault codes without a scanner by following a specific key-on/key-off sequence (check forums or your service manual for your model’s procedure). If you have a diagnostic scanner like a Candoo Pro, plug it in. Codes will point you directly to the problem, whether it’s a sensor, the motor, or the module.

  5. Perform a “Wiggle Test”

    With the machine turned off, jack up the front end so the tires are off the ground. Turn the steering wheel from lock to lock. Does it feel smooth or does it bind up? Grab each tire at the top and bottom and try to wiggle it. Excessive play could indicate bad ball joints. This helps rule out mechanical issues that are masquerading as a DPS failure.

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Can Am Defender Power Steering Problems Best Practices: Prevention is Key

The best repair is the one you never have to make. Following a few best practices will dramatically reduce your chances of getting stranded with a failed DPS. This is your long-term can am defender power steering problems care guide.

Proactive Electrical Care

Your Defender’s electrical system is its lifeblood. Use a battery tender if your machine sits for extended periods. Once a year, take the time to check and clean your main power and ground connections. A sustainable approach to maintenance means ensuring the longevity of your components.

Properly diagnosing an electrical fault instead of just replacing the entire DPS unit is also the most eco-friendly can am defender power steering problems solution, saving a large, complex part from the landfill.

Mind Your Mods

We love adding accessories like winches, light bars, and stereo systems. However, these all put a heavy demand on your electrical system. If you’re running a lot of high-draw accessories, make sure they are wired correctly using relays. Consider upgrading to a heavy-duty battery or even a dual-battery setup to provide the DPS with the consistent power it needs.

Keep it Clean and Lubricated

After a muddy ride, wash your machine thoroughly, but be careful with a pressure washer around the DPS unit and its connectors. Periodically lubricate the U-joints in your steering shaft with a quality grease to prevent them from binding up.

When to Put Down the Wrenches and Call a Pro

There’s no shame in knowing your limits. While many DPS issues are DIY-friendly, some require specialized tools and knowledge. It’s time to call your trusted mechanic if:

  • You have performed all the checks in our guide (battery, fuses, grounds) and the problem persists.
  • You have pulled fault codes that point to an internal module or sensor failure.
  • The repair involves replacing the entire DPS unit, which often needs to be calibrated to the machine with a dealer-level tool.
  • You are simply not comfortable or confident working on electrical systems. Safety first, always.
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Frequently Asked Questions About Can Am Defender Power Steering Problems

Can I ride my Defender without power steering?

Technically, yes, you can. The machine will still steer, but it will be extremely difficult, especially in tight terrain or at low speeds. It is not recommended for normal riding as it can be physically exhausting and potentially unsafe if you need to make a sudden maneuver. Think of it as a “limp mode” to get you back to the trailer or the shop.

How much does it cost to fix Can-Am DPS?

The cost can vary dramatically. If your problem is a blown fuse or a loose ground wire, the fix might cost you less than $5 and a little bit of your time. However, if the entire DPS motor and module assembly needs to be replaced, the part alone can cost over $1,500, plus several hours of labor. This is why a thorough diagnosis is one of the most important benefits of can am defender power steering problems knowledge; it saves you money.

Can water damage the power steering system?

Absolutely. The DPS unit is an electrical component, and while it’s designed to be weather-resistant, it’s not fully waterproof. Deep water crossings or direct hits with a high-pressure washer can force moisture into the connectors or the module itself, leading to corrosion and failure. Applying dielectric grease to connectors can provide an extra layer of protection.

Is there a recall on Can-Am Defender power steering?

Over the years, BRP has issued recalls for certain models and years related to the DPS system. The best way to check is to visit the official Can-Am Off-Road website and use their “Recalls” section. You can enter your vehicle’s VIN to see if any open safety recalls apply to your specific machine.

Tackling can am defender power steering problems can seem intimidating, but it doesn’t have to be. By following a logical, step-by-step process, you can solve the majority of issues yourself right in your own garage. Remember to always start with the simplest solutions—battery, fuses, and grounds—before assuming the worst.

With this guide in your back pocket, you have the knowledge and confidence to diagnose the issue and make the right call. Keep those connections clean, keep that battery charged, and you’ll enjoy countless miles of effortless steering on the trail. Happy riding!

Thomas Corle
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