Question about 2008 Chevrolet Cobalt

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My car pulled p0328 code what does that mean

The dealership replaced the knock sensor. Is that really all that needs to be done or could there be underlying issues? The car is still under warranty!

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  • James Young Jul 20, 2010

    What was the original problem? Without knowing what the original repair was supposed to correct we have no way of telling if that is all that needs to be done.

  • lisadersh Jul 20, 2010

    I didn't know I had one really. Woke up this morning got in the car and the check engine light came on as soon as I started the car. It's never come on before. I took it to the dealership and my receipt shows scan PCM code p0328, inspect knock sensor and harness. Sensor open intenral. replace knock sensor. That's all I got for you other than when I hit about 40 mph the car feels like it get supercharged before it shifts down.



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Thanks, that helps. It could be that is the only problem. The knock sensors started being installed several years back to provide performance feed back to the ECM/PCM. If a cylinder doesn't fire the knock sensor reports a misfire to the computer and a misfire code is shown. In this event the sensor is returning a value that indicated to the computer it was not functioning correctly. Replacement of this sensor doesn't require the motor to be rebuilt should cost around $200 at a dealer maybe a little more. You can view the knock sensor a little like the O2 sensor with the main difference being that if the knock sensor doesn't work correctly it could cause the vehicle to computer to adjust your timing the wrong way.

Posted on Jul 20, 2010


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I changed the spark plugs, amd check engine light came on. p0328, knock sensor high output bank 1 ,, i changed the knock sensor and light went off for about 25 miles and came back on

Did you change the correct knock sensor? You may have other problems that the knock sensor is detecting, which means the knock sensor is operating correctly. Knock is usually caused by detonation (cylinder firing before intended). There are many reasons this can happen. A common one, is the cylinder is running too lean.

Feb 11, 2016 | Cars & Trucks

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How do i deal with Error Code P0328

the following information courtesy of P0328 Knock Sensor Circuit High Input OBD-II Trouble Code Technical Description Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor) What does that mean? Knock sensors are used to detect engine pre-detonation (engine knock or ping). The knock sensor (KS) is usually a two wire sensor. A 5 volt reference is supplied to the sensor and there is a signal return from the knock sensor to the PCM (powertrain control module). The sensor signal wire informs the PCM when a knock occurs and in what degree of severity. The PCM will retard the spark timing to avoid pre-detonation. Most PCMs have the ability to learn spark knock trends in the engine during normal operation. A P0328 code is a generic DTC, thus it applies to all makes of vehicles, and refers to a high output voltage of the knock sensor. In many cases, this means the voltage is above 4.5V but that specific value depends on the specific make and model of vehicle. This code refers to the sensor on bank #1. Symptoms Symptoms of a P0328 DTC may include: MIL (Malfunction Indicator Lamp) illumination Audible knocking from the engine compartment Pinging from engine under acceleration Loss of power Irregular RPM Causes Potential causes of a P0328 code include: Knock sensor connector is damaged Knock sensor circuit is open or shorted to ground Knock sensor circuit is shorted to voltage Knock sensor has failed Loose knock sensor Electrical interference in circuit Low fuel pressure Incorrect fuel octane Mechanical engine problem Failed/faulty PCM Possible Solutions If you can hear engine knock (detonation), first fix the source of the mechanical problem and retest. Ensure the correct octane fuel was used (some engines require premium fuel, check the owners manual). Aside from that, for this code, most likely the problem will lie either with the knock sensor itself or the wiring & connectors going from the sensor to the PCM. Realisitcally, for the DIY vehicle owner, the best next steps are to measure the resistance between the two knock sensor wire terminals where they go into the PCM. Also, check the voltage of the same terminals. Compare those numbers to the manufacturer's specifications. Also, check all wiring and connectors leading from the knock sensor back to the PCM. In addition, you should also check the resistance using a Digital Volt Ohm Meter (DVOM) of the knock sensor itself, compare it to the vehicle manufacturers specification. If the knock sensor resistance value is out of spec, then it needs to be replaced. Other knock sensor DTCs include P0324, P0325, P0326, P0327, P0328, P0329, P0330, P0331, P0332, P0334 Register now to ask a question (free) Related P0328 DTC Discussions

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Aug 17, 2015 | Cars & Trucks

1 Answer

P0328, P0462

Code 328 is for the knock sensor which is a common code for Nissan products. it does not always mean the sensor has failed.
Code 462 usually means the computer is not getting a signal from the sending unit in the gas tank. Have you checked the signal at the tank harness ?

Jun 30, 2013 | Nissan Xterra Cars & Trucks

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You did not give the make model and year, so here is the generic meaning.
Code 328 is for a problem with the knock sensor circuit.

Apr 23, 2013 | Cars & Trucks

1 Answer

I have a 2002 Nissan frontier SC, 69000 miles. Motor runs well when first start the engine and runs very routh after warm up and it just stops sudenly the engine. Three codes P0328(knock sensor 1 circ

P0328 Is knock sensor code,all Nissan have this code so leave,concentrate on P0101 and P0103 this is MAF(mass airflow),Just make sure the timing belt is in good condition and the marks are correct, your solution is NTB02-003A In other word you need a reprogram on the ECM

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I have a 2003 xterra SE Supercharged, I was throwing a P0328 knock sensor high input. so I replaced the knock sensor, and while I was at it. the timing belt. after getting everything put back together it...

Check-- the knock sensor should be replaced if it is setting a code. Second, the misfire on number 2 hole could be a defective injector. There is a known problem for the 2002 and 2003 models. Pull the plug from #2 hole and compare it to another plug. If #2 is black and the others are not you have a leaking injector. Also, perform an ohms check on all the injectors and I bet #2 will be less than the rest. make sure you use a quality sensor, Lee Davidian

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