Excelerate

Is this CEL related to detecting knock or is that hte knock sensor is defective or the wiring is messed up?

khunt0012

P0325 Knock Sensor Circuit Malfunction

I imagine that means something is messed in the wiring not the sensor itself, but I couldn't tell you with 100% certainty.

Ross 2.0

First of all you need to tell us what year and model of car this is

khunt0012

I just assumed the 1999 Accord in his sig.

Ross 2.0

Yea I would assume that too I just want to be sure. I messed myself up a few good times on an assumption.

khunt0012

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MooGoCow3 &raquo;</TD></TR><TR><TD CLASS="quote">Yea I would assume that too I just want to be sure. I messed myself up a few good times on an assumption. </TD></TR></TABLE>

That would make 2 of us.

Excelerate

1999 Accord LX 2.3L

khunt0012

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Excelerate &raquo;</TD></TR><TR><TD CLASS="quote">1999 Accord LX 2.3L </TD></TR></TABLE>

My first response is correct then. Refer to that.

JimBlake

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by khunt0012 &raquo;</TD></TR><TR><TD CLASS="quote">P0325 Knock Sensor Circuit Malfunction

I imagine that means something is messed in the wiring not the sensor itself, but I couldn't tell you with 100% certainty.</TD></TR></TABLE>I think it could also be the sensor itself is bad. But I don't think that code is related to the system detecting knock.

khunt0012

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">I think it could also be the sensor itself is bad. But I don't think that code is related to the system detecting knock.</TD></TR></TABLE>

That's correct. The CEL is for a malfuntion in the knock sensor/wiring, not detecting knock itself.

Ross 2.0

First step
DTC P0325: KS Circuit Malfunction


Reset the ECM/PCM.

Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.

Hold the engine at 3,000-4,000 rpm for at least 60 seconds.


Is DTC P0325 indicated? YES - Go to step 4.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the knock sensor and at the ECM/PCM.


Let us know what you find out

Excelerate

I tried what you said. I let the fan cycle on and then held the revs at about 3500 for about 60 seconds or so. No CEL. What next? I've checked the knock sensor and the plug and they all look good. I guess I have to look at the ECU next. What about voltage readings?