P0325 on a 2.0L Tiburon

[David Lisle]

Greetings everyone,

I’m looking for help understand the P0325 code my car threw up this evening.

I know that it is a Knock sensor and here is the freeze frame from the code.

P0325: Knock Sensor 1 Circuit (Bank 1 or Single Sensor) (Powertrain, Generic)
Fuel system status: Fuel system 1: Closed loop (1)
Fuel system status: Fuel system 2: NA
Calculated engine load: 37.3 %
Engine Coolant Temperature: 185 °F
Short Term Fuel Trim – Bank 1: 3.1 %
Long Term Fuel Trim – Bank 1: -2.3 %
Engine RPM: 2973 RPM
Vehicle Speed Sensor: 65 mph
Ignition Timing Advance for #1 Cylinder: 34.0 (what should the ideal number for this one be?)
Intake Air Temperature: 77 °F
Air Flow Rate from Mass Flow Sensor: 3.1 lb/min
Absolute Throttle Position: 17.6 %
Time Since Engine Start: 207 s
Commanded Evaporative Purge: 0.0 %
Fuel Level Input: 0.0 %
Barometric Pressure: 29.0 inHg
Control module voltage: 14.07 V
Absolute Load Value: 76.5 %
Fuel/Air Commanded Equivalence Ratio: 1.000
Relative Throttle Position: 15.3 %
Ambient Air Temperature: 75 °F

Topic

[college man]

What is the advance number at idle? does the number move
or just locked?

[David Lisle]

6-9 at idle

[jason]

if you reb the motor from idle to say 3000rpm do you here any noise or rattling.

[David Lisle]

No rattling or out of the ordinary noise that I can detect however, I do have a new freeze frame. The P/S Belt has been squealing recently however that could be an unrelated issue.

P0325: Knock Sensor 1 Circuit (Bank 1 or Single Sensor) (Powertrain, Generic)

Permanent Trouble Codes
-none

Freeze Frame
P0325: Knock Sensor 1 Circuit (Bank 1 or Single Sensor) (Powertrain, Generic)
Fuel system status: Fuel system 1: Closed loop (1)
Fuel system status: Fuel system 2: NA
Calculated engine load: 50.2 %
Engine Coolant Temperature: 186 °F
Short Term Fuel Trim – Bank 1: -0.8 %
Long Term Fuel Trim – Bank 1: -3.9 %
Engine RPM: 3397 RPM
Vehicle Speed Sensor: 75 mph
Ignition Timing Advance for #1 Cylinder: 30.0
Intake Air Temperature: 71 °F
Air Flow Rate from Mass Flow Sensor: 4.8 lb/min
Absolute Throttle Position: 22.0 %
Time Since Engine Start: 445 s
Commanded Evaporative Purge: 0.0 %
Fuel Level Input: 0.0 %
Barometric Pressure: 29.0 inHg
Control module voltage: 14.07 V
Absolute Load Value: 92.9 %
Fuel/Air Commanded Equivalence Ratio: 1.000
Relative Throttle Position: 20.8 %
Ambient Air Temperature: 50 °F

[zero]

You can usually test a knock sensor by checking it’s resistance. Not sure what it should be, also a good idea to visually check as much wiring as possible.

[David Lisle]

I found the sensor and the wiring harness plug, don’t know what size socket I’m going to need but there is a lot of congestion in the location.

[David Lisle]

Quick Update, I unplugged and re-plugged in the Knock Sensor and now the check engine light has turned off. Could this have just been a loose connection?

[college man]

[quote=”dblisle” post=117539]Quick Update, I unplugged and re-plugged in the Knock Sensor and now the check engine light has turned off. Could this have just been a loose connection?[/quote]

That is a possibility or a dirty connection.

[Author]

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