code 43

Hello,

This code is for the knock sensor which is located by the starter here is the location in the diagrams below. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

so i should buy a new knock sensor? So I should get a new knock sensor or is there a way to bypass it?

I would replace the sensor first to see what happens here is the location. Check out the diagrams (Below). Please let us know what happens.

I replaced the sensor and the same codes up?

I would swap out the distributor with a rebuild unit here are diagrams to help you Below.

That did it :) thanks so much for helping me solve the problem.

Nice work, we are here to help, please use 2CarPros anytime.

Cheers

I have 1995 Chevrolet 5.7 with same code P43. I have changed knock sensor, connector and distributor light still comes back on with Code P43.

Hi,

This code is set when there is low or high voltage sent from the knock sensor. Since the module has been replaced, chances are either it is a wiring issue or the ignition control is bad (part of PCM).

If you look at the attachments below, they provide the diagnostics for determining if there is a voltage issue or if it is a sensor. Since the code is still present, you can most likely skip step one and jump to step 2.

Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find or if you have other questions. Also, the directions below are for a truck having an automatic transmission. If your vehicle is a manual, let me know. Also, the third pic is more or less a description of the circuit and what causes the code to set.

Take care,

Joe

See pics below.