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I replaced my knock sensor but my check engine light came back on what else can I check. The. Code still says it's my knock sensor

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  • Cars & Trucks Master
  • 3,218 Answers

What type of. vehicle? The knock sensor may be functioning properly and is picking up a knock from the vehicles engine. Sometimes a low grade of fuel can cause the engine to ping resulting in a knock sensor code. Is there any abnormal noises being produced from the engine or bolt on accessories?

Posted on Apr 05, 2015

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Posted on Jan 02, 2017

  • 119 Answers

SOURCE: Code #P0171 & code #P0174

The most common problem on a Ford with these codes is deteriorated PCV hoses. Check the hoses from the PCV valve to the intake manifold. Pay special attention to the rubber elbows. They often crack on the inside curve and the crack is hard to see.

Posted on May 22, 2008

emissionwiz
  • 75814 Answers

SOURCE: Check Engine Light 1996 Nissan Maxima

The best way is to use a scan tool to clear the codes, that will turn off the light, also disconnecting the battery over night may work, but no completely sure about that, it varies from year to year.

Posted on Sep 23, 2008

  • 14 Answers

SOURCE: Check Engine Light - O2 Sensor - bank 1 running lean

you should have three oxygen sensors on your car, one for each bank of three cylinders; should be towards the Y pipe on each exhaust manifold. Additionally you should have one on the exhaust pipe before the cadilitic converter.

Posted on Nov 20, 2008

  • 1857 Answers

SOURCE: 98 Nissan Maxima - Check Engine Light, Knock Sensor

If the car is pinging you will set a knock sensor code.'
This comes from bad gas and running lean., You really need this professionally inspected to rule out the basics. I have seen alot of nissans with the knock sensor code stored but the light is still off.
Fill up the tank with high octane chevron and some techron injector cleaner and clear the light. If it stays off for a couple days then go get it inspected. Even if the code is stored it will still pass as long as the light is still off and the monitors have run.

Posted on Jan 04, 2010

  • 17 Answers

SOURCE: 2002 chevy silverado hd2500 6.0 ecm code po332 low

If all connections are good "dry, tight, no corrosion" then yes. It should be a defective sensor. These sensors are piezo sensors and create a voltage when sensing a knock. A bank refers to a side on a V style engine, 2 refers to the rear sensor on your bank 2. Bank 1 should be the side with cylinder #1 which should be the cylinder closest to you on one of the sides. So your looking for the rear sensor on the opposite side.

Posted on Jun 13, 2010

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Why is error code p0327


Code P0327 indicates that the readings from the #1 Knock Sensor circuit are too low, is outside of its operational window and malfunctioning. Symptoms
  • Check Engine Light will illuminate
  • Engine pings on accelration
  • Engine may be running hotter or colder than normal
  • In rare cases, the engine may not exhibit noticeable symptoms
Common Problems That Trigger the P0327 Code
  • Defective Knock Sensor
  • Defective Knock Sensor Circuit or connections
  • Defective EGR System
  • Malfunctioning Cooling System
  • Rich air/fuel ratio
Common Misdiagnosis
  • Knock Sensor replaced when cause of code P0327 was a cooling system problem
  • Knock Sensor replaced when cause of code P0327 was an EGR system malfunction

Sep 28, 2015 | 2005 Suzuki Forenza

1 Answer

Hello, I need some help. I have a 1996 Honda Civic ex (automatic) D16y8 VTEC engine. Today I had a mechanic replace distributor with a new one (not rebuilt) from an auto parts store. The mechanic did not...


Yes, the ignition timing could be off enough to cause the symptoms and the check engine light.
I would take it back to the shop and tell them to set base timing, clear the code, and refund you the cost of the knock sensor and labor.

Jul 07, 2013 | Cars & Trucks

1 Answer

I replaced the knock sensor, what else could be causing acceleration problems on hills?


The knock sensor code does not always mean the sensor is faulty.
The sensor picks up noise and vibration in the engine such as a spark knock would generate, and the computer slows down the spark timing to fix it. If the noise or vibration continues, the code is set.
Could be a noisy valve, or a problem with the crankshaft or other component.

Aug 13, 2012 | Cars & Trucks

3 Answers

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

* 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

Hope this helps
Steve

Mar 03, 2011 | 1993 Jeep Grand Cherokee

1 Answer

I have a 2004 pilot, VTS4 and engine light came on. i have a p0325 knock sensor circ. bank A. just replace the sensor?? also i can seem to find any diagrams. any help appreciated!!!


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:

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

Mar 02, 2011 | Honda Pilot Cars & Trucks

1 Answer

98 Nissan Maxima - Check Engine Light, Knock Sensor


If the car is pinging you will set a knock sensor code.'
This comes from bad gas and running lean., You really need this professionally inspected to rule out the basics. I have seen alot of nissans with the knock sensor code stored but the light is still off.
Fill up the tank with high octane chevron and some techron injector cleaner and clear the light. If it stays off for a couple days then go get it inspected. Even if the code is stored it will still pass as long as the light is still off and the monitors have run.

Jan 04, 2010 | 1998 Nissan Maxima

3 Answers

Not shifting into overdrive and check engine light


I'm not a lexus guy , but I'm thinking that you have a vacuum leak somewhere.

Nov 06, 2009 | 1999 Lexus RX 300

4 Answers

Nissan xterra knock sensor


It's the valley of the engine underneath the intake manifold. It's about an $800 job because the top of the engine has to come off. However, unless you have a supercharged xterra it shouldn't effect performance. Also, the knock sensor will not trip the check engine light, as it does not indicate a primary problem, so if your light is on you should have another code that should be fixed first.

Nov 05, 2008 | 2002 Nissan Xterra

1 Answer

2004 gmc serria ext cab (check engine light)


You can't..you'll have to replace the sensor..no other cure

Apr 08, 2017 | 2004 GMC Sierra

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