I have a 2000 Nissan Quest. My service engine soon light came on and the diagnosis was the knock sensor. I had it repaired for $800 and now my service engine soon light is on again a day later. Instead of taking it back to the repair shop, I took it to Checker to get a diagnosis code. It came back as the speed sensor. Was I lied too by the repair shop?
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this isn't a simple repair job, the knock sensor must be replace, I would also make sure that this IS the knock sensor that is the issue here otherwise if you replace and clear the codes the same issue will appear again, sometimes the engine computer will throw a code that is correct but misinterpreted which I believe might be your case,If you have a knock sensor code on any Nissan (in my experience) replacing the knock sensor will not fix it. The knock sensor detects unwanted engine vibrations, such as miss fires. So if you have a knock sensor code first check your spark plugs, are they in proper condition? (if not replace them). Next quest vans are known for clogging fuel injectors so i would recommend running a can of sea foam injector cleaner.
P0325 Knock Sensor 1 Circuit (Bank 1 or Single Sensor) -Circuit Malfunction
P0326 Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
P0329 Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)
P0330 Knock Sensor 2 Circuit (Bank 2) -Circuit Malfunction
P0331 Knock Sensor 2 Circuit Range/Performance (Bank 2)
P0332 Knock Sensor 2 Circuit Low Input (Bank 2)
P0333 Knock Sensor 2 Circuit High Input (Bank 2)
P0334 Knock Sensor 2 Circuit Input Intermittent (Bank 2)
P0335 Crankshaft Position Sensor -Circuit Malfunction
P0336 Crankshaft Position Sensor -Range/Performance
P0337 Crankshaft Position Sensor -Low Input
P0338 Crankshaft Position Sensor -High Input
P0339 Crankshaft Position Sensor -Intermittent
P0340 Camshaft Position Sensor A Circuit (Bank 1 or Single Sensor) -Circuit Malfunction
sorry would a play with this to know for sure ,check the wiring plugs onto the sensors to make sure their not full of oil or corroded
The service engine light on is not a big deal. you just aren't meeting emissions right now.
Go to Autozone and have them run a free scan to get fault codes.
Just remember this - do not ever change the knock sensor even if it gives a fault code. It is in the middle of the engine and a waste of $600 for no improvement. It will never affect your engine performance, good or bad.
report back with code here or on Villager- Quest website I gave you.
knock sensor is located on the block usually under the intake. nissan has problems with these sensors. i have chaunged plenty of these on nissans in the past year. this has no affect on your gas mileage. this sensor picks up misfires on the engine. sometimes you might have rough idle and can't feel it in the drivers seat but the knock sensor can. i would suggest maybe a tune up spark plugs, air filter, fuel filter first before going to take apart a bunch of things to change a sensor. the sensor is designed to pick up any differences in motor quality and will throw the engine light on. sometimes the problem is the knock sensor, or there is an underlying cause that the knock sensor is reading.