Question about 2005 GMC Sierra

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Knock sensors code won't clear, after changing both sensors and harness

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Try this:remove the negative cable at battery,wait 5 minutes then
plug it back!...what's up?

Posted on Apr 02, 2014

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I recently changed both knock sensors and wiring harness on my 99 Lexus rx 300! I purchased the parts on ebay and they state (OEM PARTS) Check engine, P0330,


code p 0330 refers to knock sensor (KS)2 bank 2 ---circuit malfunction===causes wiring--KS---ECM
it is possible that in changing the harness there is a problem connection or the connection to ks2 is not correct ( not on properly)

Oct 01, 2016 | 1999 Lexus RX 300

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Returning Knock Sensor Code 52 and Retarding Timing


Some cars have more than one sensor.

Jun 12, 2015 | Cars & Trucks

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2000 Nissan frontier ran rough and stalled out. will not start. only code is for knock sensor. Could the knock sensor cause this?


Ecu collects data from all sensors. If they don't "add up" it throws the code. Could be corrosion on the connection or connector is off.
Find the knock sensor on the block, check the connection. If a bad connection scrape spade to bright metal both sides reconnect, clear code. Recheck codes. No help must be knock sensor. so must be changed.

Mar 17, 2015 | Nissan Cars & Trucks

2 Answers

2003 Escalade 6.0L AWD p0327 code replaced both knock sensors and harness. Cleared codes 10 miles later light came back on p0327. What do i look for now?


  • Verify the resistance of the knock sensor (compare it to factory specs)
  • Inspect for broken/frayed wires leading to the sensor
  • Check the wiring and connections leading to/from the knock sensor and PCM/ECM
  • Verify proper voltage is reaching the knock sensor (e.g. 5 volts)
  • Verify proper grounding of sensor and circuit
  • Replace the knock sensor
  • Replace the PCM/ECM

Jun 03, 2012 | 2003 Cadillac Escalade

2 Answers

Getting codes P0325 and P0420. Where to start?


Hi,

code P0325 is for knock sensor and it looks like is a common problem with these engines.You might need to replace the knock sensor, and this is a few hours job for a qualified mechanic.You can try first using a high grade gasoline, but I doubt it will fix the problem.
code P0420 -right bank -B1 three way catalyst function.
possible cause for P0420:
-you might have a hole in the exhaust tube
- you might have some intake air leaks
- injectors leaks
-spark plugs
check first for some damage exhaust tube.or it might be related to code p0325, as a change in timing dictated by knock sensor malfunction.
hope this will help.
Good luck.

Jan 23, 2011 | 1998 Nissan Pathfinder

1 Answer

I have an engine code PO332 knock sensor 2 circuit low imput bank 2 what is this problem .the car is a 2001 gmc yukon xl .


The most likely cause of your code is a bad rear knock sensor. You should check the knock sensor wiring harness for corrosion. But if that checks out the sensor will have to be replaced. The knock sensor is under the intake manifold, although it's not too difficult to remove. Both knock sensors should be replaced along with the wiring harness, just because of labor involved in gaining access to the sensors. You could try clearing the code, it may stay off for a long time.

May 23, 2010 | 2001 GMC Yukon XL

2 Answers

Service engine light


Your not going to here any knock from the engine the knock sensor detects detonation which is not detectable with the human ear. if you want to test the knock sensor you can tap the side of the block the engine should stumble for a couple of seconds if it does not change then the way the engine runs then the knock sensor is defective or hase buildup iside the engine and you will need to do a top engine clean. if you want instructions on how to do this just post another post to this reply This happens on engines that ave high mileage or acar that runs low grade like regular.

Apr 16, 2010 | 2004 Mini Cooper

2 Answers

Check engine light on. P0325, P0420 2000 Subaru


CODE PO420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD BANK I * CODE PO325 KNOCK SENSOR NO.1 CIRCUIT MALFUNCTION BANK NO.1 OR SINGLE SENSOR

Nov 13, 2009 | 2000 Subaru Outback

1 Answer

Codes will not clear


Try clearing it with an OBD 2 code reader reader.

Feb 03, 2009 | 1996 Nissan Maxima

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