Codes P0463 and P0725, check engine light on?

So, these are two separate problems.

P0463 - Fuel Level Sensor Circuit High Input: This code suggests that there is an issue with the fuel level sensor, which sends data to the engine control unit (ECU) regarding the amount of fuel in the tank.

P0725 - Engine Speed Input Circuit Malfunction: This code indicates that there is a problem with the signal that the engine's control module receives from the engine speed sensor

Please start a new thread for the P0725 code as we handle one problem per post.

Can I ask if the fuel gauge is working? It might work intermittently as well which is difficult to tell sometimes. The needle may waver slightly. If so, I would replace the fuel pump module which will come with the level sensor. The sensor might be offered separately so you will need to check for this. Here is how the part is changed out so you can see what needs to be done to fix it. Clear the codes once the job is complete. Check out the images (below). Please let us know what happens.

Yep, it sounds like the sensor is going bad in the tank, when it gets bad enough, I would replace the fuel pump module.

Hi,

The code is related to the engine speed vs the vehicle speed. In other words, the engine speed (RPMs) are too low when compared to the vehicle speed. This is measured while the vehicle is driven, and the engine control module is communicating with the transmission control module. My first suspect is a can-bus open circuit, broken wire, faulty connection, or something similar.

This code requires diagnostics. It could be a connector issue, a can-bus/communication issue, a wiring issue, and so on as I mentioned. I attached the diagnostics below for you to review. Take a look through them and let me know if this is something you are comfortable performing.

Take care,

Joe

See pics below.