The U0073 Code is typically caused by an issue with your vehicle’s communication bus. You will want to investigate the cause of the problem and resolve it in order to prevent any further issues from happening.
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If the U0073 code appears in your car, it means that there is a problem with the communication between the body control module and the network management module. If this happens, you may be unable to start or drive your vehicle.
In order to fix it, you will need to get access to a diagnostic tool that can communicate with the various modules in your car.
To do this, take your vehicle to a mechanic who is familiar with this type of problem. They should be able to figure out what’s wrong with your car and give you advice on how best to fix it.
Diagnosing this code is not easy because it requires special tools for proper diagnosis. However, if you’re able to find a mechanic who is familiar with these types of problems, they should be able to determine what’s wrong and give you some advice on how best to fix it quickly and easily.
What Does the U0073 Code Mean?
The U0073 Code is a fault code that means there are issues being detected with the engine control module (ECM).
The engine control module (ECM) is the computer of your vehicle. It controls almost everything, from your car’s speed to its fuel efficiency. When something goes wrong with the ECM, it’s important to take care of it immediately. The code U0073 is one of those signals.
A few things can cause a U0073 Code:
-Faulty wiring in the CAN bus network
-Faulty Engine Control Module (ECM)
-Short to ground in the circuit
What are the Possible Causes of the U0073 Code?
The U0073 code is a trouble code that indicates the powertrain control module (PCM) has detected a malfunction in the controller area network (CAN), which may be a result of the following:
- An improperly wired data link connector.
- A faulty PCM.
- A faulty CAN bus.
- A low voltage supply to the CAN bus due to poor connections or high resistance in the wiring harness.
If you have an OBD-II scanner and you encounter this code, it is best to seek professional help.
What are the Common Symptoms of the U0073 Code?
When the U0073 Code appears, you may see some or all of these symptoms:
- Stalled vehicle
- Loss of engine power in the vehicle
- Checked engine lights systems may appear
- The engine may not be able to start
- An issue in your car’s wiring
- A short in your vehicle
- A faulty module
- A faulty battery
- Corrosion or water damage
How to Diagnose the U0073 Code?
- Locate the diagnostic port and connect a scan tool.
- Turn the key to the “on” position but do not start the vehicle.
- Refer to your scan tool for any codes that may be present other than the U0073 code. If there are other codes present, resolve them before diagnosing the U0073 code.
- Follow the diagnostic flowchart for any codes that are present, resetting and clearing all codes after testing or repair is complete.
- Check the fuse for the CAN bus line in your vehicle’s fuse panel (if equipped).
- Ensure that all computer connection pins, terminals, and connectors are clean and secure if you have access to them (consult your manual).
How to Fix the U0073 Code?
U0073: A code that’s common in older Chrysler models, this code indicates a controller area network (CAN) bus signal failure.
Luckily, fixing this error code is usually pretty simple.
Step 1: Check your wiring. Is it possible that a wire has been disconnected? Check the plugs and make sure they’re properly connected.
Step 2: Take a look at your CAN bus lines.
Step 3: Inspect your CAN bus harness connectors. If they appear to be damaged, replace them.
If these steps don’t work and you’re still experiencing issues with your U0073 code, it might be time to take it in for professional help.
CAN Bus codes off?
If you’re getting CAN Bus codes off, we totally understand that it’s a bummer. But before you freak out, here are a few things to check:
1) Is your battery charged? A dead battery can throw all sorts of weird codes. If this is the case, be sure to disconnect the battery for at least 10 minutes before reconnecting it. It should clear itself after that.
2) Does your vehicle have an aftermarket alarm or remote starter? You will need to speak with the company that installed the alarm or starter to see if they can help clear the code. They may advise you to disconnect the battery again to clear it.
3) Did you recently replace your battery? If so, make sure that the positive and negative terminals are firmly connected to their respective posts on the battery. If not, go ahead and reconnect them and try starting your car again.
Can you reset a body control module?
You can reset a body control module. Several things can happen if you reset a body control module. The main thing is that whatever issue prompted you to reset, it may come back. If you have an issue with your body control module, there are three common solutions:
- You can take your car into a mechanic who specializes in body control modules, and they can fix the problem;
- You can get a new body control module from an auto parts store and install it yourself; or
- You can try resetting the body control module and hope for the best.
If you try to reset your body control module, it’s important that you know what to do if something goes wrong. The first thing to remember is that safety is key. Don’t try to drive anywhere after resetting your body control module before making sure everything is working properly.
Instead, find a safe place to park and turn off the car while you examine all of the controls, including lights, windshield wipers, brakes, and other features that might not be working properly after attempting to reset your body control module.
What is Vehicle communication bus A?
Vehicle Communication Bus A (VCB-A) is a communication bus that was developed by the Society of Automotive Engineers (SAE). The VCB-A is used for the exchange of information between electronic control units (ECUs) in vehicles. Unlike other networks, the VCB-A does not require the presence of a central computer for its operation.
It is a tool that allows cars to communicate with each other. It was created by the European Union as a way to allow multiple parts of the vehicle itself, but also the surrounding vehicles, infrastructure, and other parts of the environment to communicate with each other.
Communication is possible through wireless and wired channels. When there are no obstacles along the path between the two points of communication, wireless is best. Wired communication is best when there are many objects in between.
By allowing vehicles to communicate with each other, it enables easier navigation as well as better traffic control and driver/passenger safety.
Conclusion
A U0073 Code is an indication that the vehicle’s computer has found a fault in the communication between the powertrain control module (PCM) and the transceiver module. In modern vehicles, this transceiver module is responsible for managing signals to and from the many sensors on the vehicle and relaying them back to the PCM.
When this code is stored, you may notice that your car does not shift gears as it should. In addition, it may seem as though your transmission is slipping or that your engine stalls out when you come to a stop. You will also likely notice that your engine runs more roughly than usual.
In most cases, this code is caused by a faulty connection in at least one of the modules involved. It can also be caused by a defective wiring harness or even damaged wires within either of these modules.