What Does It Mean When My Jeep Says No Bus?


Jeeps are fantastic automobiles. 

They appear to be able to accomplish anything you want them to, and they’re a lot of fun as well. 

However, Jeep owners sometimes run into difficulties that they aren’t always aware of how to handle. 

When the Jeep states, “no bus,” it’s usually an indication of something wrong with one of the Jeep’s communication ports.

What Does It Mean When My Jeep Says No Bus?

No Bus usually means that there’s something wrong with one of the Jeep’s communication ports. Several different things could be responsible for this error code, and it is important to know what they all are so you can make an accurate diagnosis before calling your mechanic.

That’s not all; there are two main types of trouble codes: active and stored. Continue reading for more on those.

What Is A Trouble Code?

A trouble code is active when the Jeep’s computer has detected a problem and turned on its check engine light. 

The Jeep owner can then use a scan tool to read the Jeep’s trouble codes and determine what is wrong.

Active Jeep Troubles Codes

An active trouble code usually comes with a check engine light, while history Jeep’s only require the Jeep owner to use a scan tool to read them. 

Some Jeep’s may display both an error code and a check engine light, but most Jeep’s only display one or the other.

Stored Trouble Codes

A stored code or history code, on the other hand, appears when there has been an issue in Jeep’s past, but it no longer exists. 

It will remain a record of this error for future reference in Jeep servicing and repair, but it is not an active code.

What To Do When My Jeep Says No Bus?

If your Jeep says no bus, it is important to locate the cause of this issue and get it fixed. 

You can either take your Jeep in for service or attempt a do-it-yourself approach by using the steps below:

  1. Check all connections and make sure they are tight.
  2. Make sure that the Jeep’s battery is fully charged and connected properly.
  3. If you have an older Jeep, try replacing the alternator because it may be defective or worn out. If this doesn’t work, replace your Jeep starter relay as well. The Jeep starter relay usually fails due to electrical surges caused by worn Jeep starter solenoids.
  4. If your Jeep’s check engine light is on, it’s usually because of a Jeep oxygen sensor or Jeep catalytic converter issue. Replacing these components should fix the problem, but you will need to reset your Jeep computer (if there isn’t already an active code set).

If these steps do not work, then you will need to bring your Jeep in for service.

How To Reset A Jeep’s Computer?

You can usually reset your Jeep computer by disconnecting the Jeep battery for several minutes. 

You may need to consult the Jeep repair manual or service personnel to locate the Jeep’s main fuse box, which is where you will find the Jeep’s battery storage compartment and its fuses.

The Jeep battery is usually located underneath the Jeep’s driver seat, though it may vary from Jeep to Jeep.

What Are Some Helpful Tips For My Trip To The Mechanic?

If you have a newer Jeep and none of these steps work, then take your Jeep’s computer in for service so they can diagnose the Jeep and figure out what is wrong. 

If you have a Jeep with an active code set, your Jeep’s computer will not reset until a mechanic or Jeep’s specialist has fixed the Jeep’s issue.

If it turns out to be something serious like a failed powertrain control module, don’t try to fix this Jeep issue yourself. 

You can either take your Jeep in for service or call a tow truck to have it towed to the Jeep’s dealership, where they will be able to fix it properly and reset the Jeep computer for you.

Last but not least, if your Jeep has an active trouble code set, don’t try driving it because you could damage your Jeep further.

If you follow these Jeep’s troubleshooting steps, then you can fix most Jeep problems in a few hours or less without the need to take it into the shop and spend hundreds of dollars on labor costs.

What Are Some Other Jeep Dashboard Errors?

There are other Jeep dashboard errors that you might see intermittently or constantly depending on the Jeep’s problem. 

Some of these Jeep dashboard errors include:

Frequently Asked Questions (FAQs)

When Do I Use The 4×4 Low-Range?

You can use Jeep’s low range if your Jeep gets stuck or becomes otherwise immobilized due to lack of ground clearance.

Some common reasons why someone would need to switch on their Jeeps low range include:

  • When Jeep is stuck in mud or snow
  • When Jeep is on a steep hill and unable to climb up or down without help from the Jeep’s low range transmission function.

There are many other situations where you need to use your Jeep’s low range, so remember this Jeep tip for future reference.

What Is A Jeep Transfer Case?

The transfer case is what allows the Jeep four-wheel drive (when it’s engaged) to work by splitting power between two different sets of gears: one for each axle. 

In Jeep low range, the transfer case also allows you to use four-wheel drive for slow or difficult terrain where a lower gear ratio is needed.

How Do I Know If My Jeep Transfer Case Is Working?

Try driving it in Jeep’s low range on a Jeep road with some steep hills to determine whether your Jeep’s transfer case is working correctly. 

If your Jeep’s low range is functioning as it should, then it will be able to navigate its way up and down even on very steep Jeep roads without any problem or resistance from slipping or getting stuck in mud, snow, etc.

How Do I Know If My Jeep Wants To Go Into Low Range?

The Jeep low range function is activated by a switch on the transfer case that tells your Jeep’s computer it should automatically go into Jeep’s low range when you’re driving in Jeep low range off-road.

What Is A Jeep Brake Controller?

The brake controller allows you to control your Jeep’s brakes from the driver’s seat without having to press down on the Jeep foot pedals when using Jeep’s low range.

How Do I Use A Jeep Brake Controller?

The Jeep brake controller is very easy to use, but for it to work correctly, you will need a Jeep factory tow package installed on your Jeep if it doesn’t already have one installed from the Jeep’s manufacturer. 

If you don’t have a Jeep factory tow package installed on your Jeep, you will need to install one before using a Jeep brake controller.

Are There Different Types Of Jeep Transmissions?

Yes, there are many different Jeep transmissions available depending on the type of driving conditions and terrain you will encounter while using your Jeep off-road. 

Some Jeep transmissions include:

  • Jeep automatic transmission
  • Jeep manual
  • Jeep transfer case
  • Jeep low-range and
  • Jeep high range

How Can I Tell If Jeep Has A Factory Tow Package?

Jeep has a factory tow package listed in the Jeep’s owner’s manual under the list of standard features.

The location of this information will vary depending on which Jeep model you are using, so be sure to check your owner’s manual thoroughly before attempting to use any Jeep tow package or Jeep brake controller.

Why Is Jeep Four-Wheel Drive Important?

Jeep four-wheel drive is essential because it helps your Jeep navigate tough terrain and difficult road conditions without getting stuck. 

It does this by sending power and torque between the front of Jeep rear of the Jeep’s axle, making it easier for you to drive through even the most difficult road conditions.

What Are The Advantages Of Owning A Jeep Wrangler?

There are many advantages of owning a Jeep Wrangler, including the fact they can go almost anywhere without getting stuck in mud or snow because it has great Jeep four-wheel-drive capabilities. 

Jeep Wranglers are also very popular with Jeep enthusiasts because they can be customized and modified into various Jeep models people use for Jeep off-road activities or daily driving purposes.

Final Words

The No Bus message Jeep Wrangler’s dashboard displays tells Jeep’s computer to automatically go into Jeep four-wheel-drive when you’re driving in Jeep low range off-road.

Jeep automatic and manual transmissions can be used with a Jeep transfer case, which helps send power and torque between the front or rear axles to make it easier for your Jeep to drive off-road through even the most difficult terrain. 

Lastly, there are many different Jeep transmissions available depending on the terrain you will be encountering while driving.

John Nelson

You can find John stringing a hammock from the back of his SUV to a tree camping in the outdoors most weekends during warmer weather. John loves the outdoors and the freedom four-wheel-drive vehicles offer.

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