Knock Sensor error code

[martynzs]

My emission warning light came on yesterday, and after plugging the car into a generic ODB reader, this was the outcome.

P0325 Knock sensor 1 malfunction (bank 1 or single sensor)

The code was cleared, and the light hasnt come back on in 40 miles...Now my dad, a mechanic of 30+ years explained what this is, and reckons that aslong as the light doesn't come back on it should be fine.

Should I be replacing it now?

 

[Lal B3N]

Mine was a bit intermittent when mine was bringing up that fault code.

Would come back on when sitting at the same revs for a period of time or certain fuel would bring the code up.

For what it costs I just changed it and been fine ever since.

 

[martynzs]

Ill see if it comes back then. I haven't noticed any change in performance/economy so touch wood it will be ok.

I did fill up with a different fuel than usual (Esso SUL 97) so maybe that caused a hiccup!

 

[BLT]

I got an engine management light come on a couple days later when I filled up with total 95 fuel (think it came on when I started the car). Plugged the code reader in and it was a P0130 02 sensor blank 1 error. Since the car seemed to be running normal to me I cleared it to see if it returned. Well a couple of days later it did when I started the car; once again car running fine. So what I did was the day I needed fuel I cleared the error/light and filled up with Shell V-Power to which it hasn’t been back on yet and it's been a few days now.

This now has me wondering if it was the fuel or the sensor playing up. I know we have different error codes but my advice is maybe try another fuel company (mind you is each company’s fuel any different?)

 

[martynzs]

Interesting, was yours the Engine light, or emissions?

Its the first time ive used this fuel, so does seem a little suspicious. TBH it usually just gets normal 95 from Shell as its 1.28 around here and I've had no problems.

 

[BLT]

Yeah sorry meant emissions light. Same one that you had was lit

Well I thought I would try the petrol thing first but if it comes back or the car starts to act up I will then look at the sensors

 

[gaz90]

I got the exact same code as Martyn last night when I put my engine back together and started the engine (I have a 1.2l 16v), fault code cleared and it seems ok.
Should the sensor be replaced? Or just wait and see how it goes?
Sorry for asking questions on your thread mate but I was just about to make a thread about this then seen yours

 

[BLT]

If it was me I would have made sure the sensor was clean and check the wires for damage etc. If it seemed fine I would clear the light and then see if it returned and if it did then go about replacing the sensor