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Engine knock sensor

Ozzy

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Hi
Engine management light has came on and the error code is p0325 which is says is

Malfunction with engine knock sensor detected
It also comes up with a smart junction box fault aswell
And also my rtr grille lights are not working
Which are wired to my side lights

Could this be a fuse if so any ideas of which one
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Cobra Jet

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Did you install the RTR lights, or did you buy the car with the already installed?

1st fuse box is located behind passenger side lock panel - pull the kick panel off and check code blown fuses. You're better off with a fuse tool where you can just touch the top of the fuse and see which is blown instead of trying to guess by pulling fuses.

2nd fuse box is under the hood, driver side. This one contains main relays etc.

Check for harnesses that rodents could have eaten through and also check for lose ground wires.

---
For the P0325, that code will trip if:
- Knock sensor has failed and needs to be replaced.
- The harness or connector to the knock sensor is loose (pull connector off, check for any damages to pins or wiring, reinstall connector and give it s wiggle to confirm it's attached securely).
- A wiring short or fault in the knock sensor circuit exists.

Use a multimeter and definitely check the resistance of the knock sensor by comparing it to factory specs. If the results of the resistance test are higher OR lower than the factory specs, normally that will indicate a bad sensor.
 
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Ozzy

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Darren
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2018 mustang gt
Did you install the RTR lights, or did you buy the car with the already installed?

1st fuse box is located behind passenger side lock panel - pull the kick panel off and check code blown fuses. You're better off with a fuse tool where you can just touch the top of the fuse and see which is blown instead of trying to guess by pulling fuses.

2nd fuse box is under the hood, driver side. This one contains main relays etc.

Check for harnesses that rodents could have eaten through and also check for lose ground wires.

---
For the P0325, that code will trip if:
- Knock sensor has failed and needs to be replaced.
- The harness or connector to the knock sensor is loose (pull connector off, check for any damages to pins or wiring, reinstall connector and give it s wiggle to confirm it's attached securely).
- A wiring short or fault in the knock sensor circuit exists.

Use a multimeter and definitely check the resistance of the knock sensor by comparing it to factory specs. If the results of the resistance test are higher OR lower than the factory specs, normally that will indicate a bad sensor.
I had the rtr lights fitted but not by me they was wired up at a garage.
I have another 5 error codes now very random ones looks like I'll have to get it booked into a dealer for them to look at although I'm having battery trouble which I've been told can cause error codes if that's true I don't know but will get a new battery tomorrow
 

Cobra Jet

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I had the rtr lights fitted but not by me they was wired up at a garage.
I have another 5 error codes now very random ones looks like I'll have to get it booked into a dealer for them to look at although I'm having battery trouble which I've been told can cause error codes if that's true I don't know but will get a new battery tomorrow
Sounds like whomever did the RTR's could have damaged a wiring harness, maybe left a ground loose or a connector is not seated well. Maybe call the shop back if the problems came about after the RTR install.

A failing battery can cause issues too - but again if the RTR install was improper, there could be a drain on the battery as well. Check to make sure the battery cables are secure to the posts and there isn't any major corrosion.

Post back what the Dealer finds.
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