Skip the auto shop - Our mechanics make house calls

Q: Code P0330

asked by on

I am getting code P0330 - Knock Sensor 2 Circuit Malfunction. I reset it, but it keeps coming back on after a few minutes of driving. Is it a faulty sensor? The car drives normal.

Hello! A knock sensor code can indicate faulty wiring to the sensor, or a faulty sensor itself. The wiring of the knock sensor can be checked by performing a continuity test, and the resistance of the knock sensor can be checked with a multimeter; if these are not up to specifications, a repair of the wiring or replacement of the sensor will be necessary. A knock sensor could also set a Check Engine Light due to bad gas. I suggest adding some premium gasoline, or a fuel treatment, to the tank to see if that helps keep the warning light off. It would also be a good idea to have a certified mechanic, such as one from YourMechanic, perform the aforementioned tests in order to properly diagnose the cause of your Check Engine Light illumination.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have no clutch it goes to the floor and I cannot find the slave master cylinder for the clutch master cylinder please send pics

The reservoir supplying the fluid to both cylinders is the brake master cylinder reservoir. However, adequate fluid there means nothing as a diagnostic. The clutch slave and/or master cylinder could be leaking internally (no visible external leak) or there could...

Q: Rattle/ Knock from sounds like flywheel

Hi there: Typically a loose flywheel is an indicator of other mechanical problems, ranging from a problem with the transmission converter (on an automatic) to the starter's gear. The rattle could be coming from any of those components. In most...

Q: 1pg warning light on my 2003 dodge durango what does it mean

Hi there. Unfortunately, we're not quite clear as to what warning light you are referring to with this question. Inside your owner manual in the glove box should be a section that talks about warning lights and will provide the...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.