There’s nothing quite like the feeling of being deep on a trail, miles from anywhere, only to see that dreaded check engine light flash on your Polaris General’s dashboard. Your heart sinks a little as you cycle through the display and it spits out a cryptic number: Fault Code 746. You probably agree that an unexpected error code is the last thing you want to deal with when you’re geared up for a day of fun or work.
We promise this guide will demystify that error and turn your frustration into confidence. We’re going to break down exactly what the 746 code on polaris general means, what causes it, and how you, the weekend DIYer, can diagnose and fix it right in your own garage.
In this article, you’ll get a complete, step-by-step walkthrough, from simple visual checks to testing components with a multimeter. We’ll give you the knowledge to tackle this problem head-on, save a trip to the dealer, and get back to what you love doing—riding.
What Exactly is the 746 Code on a Polaris General?
Let’s get straight to the point. The official Polaris definition for fault code 746 is: “Rear Differential Coil Driver Circuit Open / Short to Ground / Short to B+.”
In plain English, this means the computer (your ECU) has detected an electrical problem with the system that locks and unlocks your rear differential. This is the component that controls your Turf Mode.
Essentially, too much electrical current (a short) or a break in the circuit (an open) is preventing the signal from properly reaching the rear differential solenoid. When this happens, your machine defaults to a locked rear differential for safety, and Turf Mode becomes unavailable.
Why Turf Mode Matters
Turf Mode is one of the best features on a General. It unlocks the rear differential, allowing the rear wheels to turn at different speeds. This is crucial for making tight turns on hard surfaces like pavement or your lawn without tearing everything up. When code 746 is active, you lose this handy feature.
Common Problems Causing the 746 Fault Code
Before you start throwing parts at your machine, it’s crucial to understand the likely culprits. More often than not, the common problems with 746 code on polaris general are simpler and cheaper to fix than you might think. Here’s where we recommend you start looking.
Damaged or Frayed Wiring Harness
This is, by far, the most common cause. The wiring harness that runs from the main frame to the rear differential is exposed to mud, water, rocks, and sticks. Over time, wires can get snagged, rubbed raw against the frame, or even chewed by critters.
A bare wire touching the metal frame creates a “short to ground,” which is a primary trigger for the 746 code.
A Faulty Rear Differential Solenoid/Coil
The solenoid (also called a coil) is an electromagnet that actuates the locking mechanism inside the differential. Like any electronic part, it can fail. It can develop an internal short or an open circuit, causing the resistance to go out of spec and triggering the code.
Corrosion in the Connectors
The electrical connector plugging into the rear differential solenoid lives a tough life. Water, mud, and pressure washing can force moisture inside, leading to green, crusty corrosion on the pins. This corrosion disrupts the electrical signal, which the ECU reads as a fault.
ECU (Engine Control Unit) Issues
This is the least likely cause, but it’s worth mentioning. In very rare cases, the driver circuit inside the ECU itself can fail. We always recommend ruling out every other possibility before even considering the ECU as the problem.
Your Step-by-Step Diagnostic Guide for the 746 Code on Polaris General
Alright, time to grab your tools and get your hands dirty. Follow this 746 code on polaris general guide methodically. Always start with the simplest and cheapest potential fixes first. Safety first: make sure the vehicle is in park on a level surface with the key OFF before you begin.
Step 1: The Visual Inspection (The Easiest First Step)
Your eyes are your best diagnostic tool. Get a good flashlight and start by tracing the wiring harness from the rear differential back towards the front of the machine. It’s typically a two-wire harness.
Look for any obvious signs of damage: cuts, chafing where it rubs on the frame, melted spots, or breaks. Pay close attention to any areas secured by zip ties, as they can sometimes be too tight and cut into the insulation over time. This is one of the most effective 746 code on polaris general tips we can offer.
Step 2: Check and Clean the Connector
Locate the electrical plug right on top of the rear differential. Carefully unplug it. You might need a small flathead screwdriver to gently release the locking tab.
Inspect the inside of both ends of the connector. Do you see any green or white corrosion? Is it full of dirt or mud? Even if it looks clean, it’s a good idea to spray it out with some electrical contact cleaner. Let it dry completely, then apply a small amount of dielectric grease to the seal before plugging it back in firmly. This prevents future moisture intrusion.
Step 3: Testing the Rear Differential Coil (Solenoid)
If the wiring and connector look good, the next step is to test the coil itself. For this, you’ll need a digital multimeter. Set your multimeter to measure resistance (Ohms, symbolized by Ω).
With the connector unplugged, touch the two probes of your multimeter to the two metal pins on the solenoid (the part on the differential). A healthy Polaris rear differential coil should have a resistance reading of approximately 20-25 Ohms. If you get a reading of 0 or 1 (OL or Open Line), or a number drastically outside that range, your coil is bad and needs to be replaced.
Step 4: Checking for a Short to Ground
This step checks if the power wire is touching the frame somewhere. Switch your multimeter to the continuity setting (it usually has a sound symbol like a speaker).
Leave the differential unplugged. On the vehicle-side of the harness, place one multimeter probe on one of the wire pins and the other probe on a clean, unpainted metal part of the frame. You should hear no beep and the meter should read OL. If it beeps, you have a short to ground. Now you just have to find where that bare wire is touching the frame.
Tools and Parts You’ll Need for the Job
Having the right tools makes any job easier. You don’t need a full professional shop, but a few key items are essential for this diagnosis. Here’s a quick checklist:
- Digital Multimeter
- Basic Socket and Wrench Set
- Flashlight or Headlamp
- Electrical Contact Cleaner
- Dielectric Grease
- Zip Ties
- Electrical Tape or Heat Shrink Tubing (for wire repairs)
- Potential Parts: New Rear Differential Solenoid/Coil (Part #3236123 or similar, check your model)
Best Practices for Preventing the 746 Code
An ounce of prevention is worth a pound of cure, especially in the off-road world. A good 746 code on polaris general care guide is all about being proactive.
Follow these 746 code on polaris general best practices to keep this pesky error from coming back:
- Secure Your Harness: After every few rides, take a quick look at your rear diff wiring. Make sure it’s not hanging loose or rubbing against suspension components or the frame. Add a zip tie where needed, but don’t pull it too tight.
- Use Dielectric Grease: Whenever you have electrical connectors apart for maintenance, add a dab of dielectric grease. It’s cheap insurance against water and corrosion.
- Route Wires Carefully: If you add any accessories, be mindful of how you route your wiring. Keep it away from hot exhaust parts and moving pieces.
- Sustainable Mindset: Taking 10 minutes to inspect and protect your wiring is the most sustainable 746 code on polaris general approach. It prevents a perfectly good solenoid from being thrown away due to a simple wiring issue, which is an eco-friendly 746 code on polaris general solution that saves you money and reduces waste.
When to Put Down the Wrenches and Call a Pro
We’re all for DIY, but it’s also important to know your limits. You should consider taking your Polaris General to a qualified technician if:
- You’ve followed all the diagnostic steps and still can’t find the problem.
- The wiring harness has extensive damage that requires more than a simple patch job.
- You suspect the ECU is the problem. Diagnosing and replacing an ECU is a job best left to professionals with specialized tools.
- You simply don’t feel comfortable performing electrical diagnostics. There’s no shame in that!
Frequently Asked Questions About the Polaris General 746 Code
Can I still ride my General with a 746 code?
Yes, you can. The machine defaults to a “fail-safe” mode where the rear differential remains locked. Your 4WD will still work, but you will not have Turf Mode. Be very careful making sharp turns on high-traction surfaces as it will cause wheel hop and put stress on your drivetrain components.
How much does it cost to fix a 746 code?
The cost can vary dramatically. If it’s a simple broken wire you can fix with electrical tape, it might cost you nothing. If you need a new rear differential solenoid, the part typically costs between $100 and $150. If you take it to a dealer, you can expect to add 1-2 hours of labor costs on top of that.
Is the rear differential coil the same as the solenoid?
Yes. In this context, the terms “coil” and “solenoid” are used interchangeably to describe the electronic component that actuates the rear differential lock.
Tackling an electrical code can feel intimidating, but the 746 fault is usually a straightforward fix. By following a logical diagnostic process, you can pinpoint the issue, make the repair, and save yourself a headache and a hefty repair bill.
Remember to work methodically, double-check your connections, and never be afraid to consult your service manual. Now you have the knowledge and the steps to get that code cleared and your Turf Mode back in action.
Get it fixed, get back on the trail, and ride on!
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