Question about Kia Rio

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I have had my vehicle in for numerous minor repairs, one recurring one which is a diagnostic code for a knock sensor P0325. I installed a new sensor and the code came up again. The location where I bring the car doesn't seem to know how to fix it as they just say the code wasnt cleared properly. The last time I was there they said it might be the MAF sensor. Can you help??? I have tried to clean the throttle body myself using air intake cleaner which seemed to keep the problem from returning until the other day? Is this something else or do i need to replace the MAF Sensor? Its a 2003 Kia Rio RX-V

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  • Kia Master
  • 8,531 Answers

P0325 has nothing to do with the MAF sensor or the throttle body. Are there other problems you are trying to solve? If you have a new knock sensor, the 325 is probably caused by poor connection. Make sure the female terminals in the connector on the car side are closed enough to grip the male counterparts on the sensor pigtail tightly. If you correct the problem, the code should clear on it's own after driving about an hour. If you have more questions, please let us know.

Posted on Oct 13, 2010

  • swiss_army22 Oct 13, 2010

    Hi, I had the knock sensor installed at a reputable garage here, only thing is it wasnt a Kia dealerrship, it was installed by a Landrover/Jaguar technician who does excellent work. I will look into it and see if it helps.

    Thanks

  • Jeffrey Turcotte
    Jeffrey Turcotte Oct 13, 2010

    I don't always check the connectors myself, so hard to blame on the mechanic. It may be this is not the problem and that it's something hard to find. It doesn't matter that your guy isn't a Kia guy--stick with a guy you can trust.

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2000 xterra code p0325 the common issue


It will not pass inspection.
P0325 NISSAN - Knock Sensor Circuit Malfunction xicon.jpghttp://engine-codes.com/p0325_nissan.htmlForum CodePossible causes- Faulty knock sensor
- Knock sensor circuit short to ground
- Knock sensor circuit short to power
- Knock sensor circuit open
- Faulty Engine Control Module (ECM) Tech notes Very common problem with Nissan vehicles. Replacing the knock sensor usually takes care of the problem.

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Diagnostic code po325 what does this mean


Hi the error code relates to the PCM Knock Sensor Circuit

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. The knock sensor generally threads into the engine block. This P0325 code may show up intermittently or the Service Engine light may be lit constantly.
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

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I have on 01 xterra-service engine light on-codes P1126 & P0325. I think the battery is about to go,could it be realated to codes? Otherwise what do the codes mean? Appreciate any help


Your battery has nothing to do with these codes. Your vehicles computers have detected a malfunction or failure in the system. This triggers these codes and sets your check engine light. Below I have listed the code meanings and some repair solutions.

P1126 - Throttle Position (Narrow Range) Sensor Circuit Malfunction.

Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM.

Possible Causes For P1126:
- Harness or connectors (Throttle control motor relay circuit is open)
- Throttle control motor relay


P0325 - Knock Sensor Circuit Malfunction

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Powertrain Control Module (PCM) or Electronic Control Module (ECM).

Possible Causes For P0325:
- Knock sensor circuit short to ground.
- Knock sensor circuit short to power.
- Knock sensor circuit open.
- Damaged knock sensor.
- Damaged PCM or ECM

Possible Solutions:
- Repair or resecure harness or connector
- Replace knock sensor Bank 1 (Bank 1 if applicable)
- Replace PCM or ECM

The P0325 DTC is a very common problem with Nissan vehicles. On most Nissan vehicles the knock sensor is located on top of the engine block.

knock_sensor_infiniti.gif

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


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

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Understanding trouble codes for my vehicles


On the Nissan that code means you have a short in the knock sensor circuit or you just need a new knock sensor.

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Check engine light on. P0325, P0420 2000 Subaru


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Trouboule


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

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Nissan quest 1999 engine light codes P0325 & P1105 WHAT DO THESE CODES MEAN


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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.

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