P0325 what does it mean - 2005 Kia Rio

First off what make .model and year vehicle do you have ? po325 is a generic OBD 2 code . all cars would mean samething . The othe code p1381 is a manufacturer code an would not be the same for all makes , models .

https://www.obd-codes.com/p0325

P0325 Knock Sensor 1 Circuit Malfunction
A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged.
The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block. This P0325 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.
Symptoms You may notice drivability problems including a lack of power and perhaps some hesitation. There may also be other symptoms.
Causes A code P0325 most likely means one or more of the following has happened:

• The knock sensor is faulty and needs to be replaced
• There is a wiring short/fault in the knock sensor circuit

http://engine-codes.com/p0325_nissan.html
The P0325 code means that the Knock Sensor is not working properly. Problems with the knock sensor will not cause an engine performance problems. Replacing the knock sensor usually takes care of the problem. The link above will help you track down what you need to do to fix the issue

Both the codes here are engine codes you need to be able to pull ABS codes. P0325 is a knock sensor code and the P0496 is evap purge flow high. These will not cause a ABS or Traction control problems.

p0171 = fuel system too lean, this means vacuum leak or faulty oxygen sensor

p0303 = cylinder 3 misfire

p0325 = knock sensor malfunction.

p0303 and p0325 - i can see these working together, if a cylinder misfires, it will cause the knock sensor to trip. I would lean towards the coil and or ignition module, along with a faulty oxygen sensor.

It does sound like the sensor may be bad, but you also need to check the wiring.
This information comes from:

http://www.obd-codes.com/p0325

P0325 OBD-II Trouble Code Technical Description

Knock Sensor Circuit Malfunction
What does that mean?

A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block. This P0325 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Symptoms

You may notice drivability problems including a lack of power and perhaps some hesitation. There may also be other symptoms.
Causes

A code P0325 most likely means one or more of the following has happened:

• The knock sensor is faulty and needs to be replaced
• There is a wiring short/fault in the knock sensor circuit

Possible Solutions

• Check the resistance of the knock sensor (compare it to factory specs)
• Check for broken/frayed wires leading to the sensor
• Replace the knock sensor

P0325 OBD-II Trouble Code

Technical Description: Knock Sensor Circuit Malfunction

What does that mean?A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block. This P0325 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.

Hope this helps.

OK THIS A SITUATION. THE P0100 IS A MASS AIR FLOW PROBLEM. THE P0325 IS A KNOCK SENSOR MALFUNCTION. AND THE P0733 IS A TRANSMISSION ISSUE. I DONT KNOW IF U HAVE A TRUST WORTHY MECHANIC BUT FOR THESE THREE FIXES U NEED ONE ESPECIALLY IF U ARE NOT CAPABLE OF THIS WORK. THESE PROBLEMS WILL CAUSE U POOR PERFORMANCE AND A HEADACHE. THESE PROBLEMS DEFINITELY NEED TO BE HANDLED ASAP!

A P0325 refers to the knock sensor electrical circuit, not the sensor itself! So check all wiring & connectors leading to the sensor, back to the PCM. Good luck, I found a good P0325 article here - http://www.obd-codes.com/p0325

P0325 is for the knock sensor.

P1105 is for the manifold absolute pressure sensor (MAP).

In either case diagnostic tests need to be performed to rule out faulty sensors or if something else is causing the sensors to give the computer inaccurate information.