Code p0326

Asked by GuruSTYYH May 19, 2019 at 07:44 PM about the 2006 Chevrolet Cobalt

Question type: Maintenance & Repair

I have a 2006 Chevy Cobalt and the check engine
light came on, I took it into the AutoZone and
pulled the code for p0326 they said that it was a
knock sensor I'm not too sure where it's located or
how to go about fixing it when I drive the vehicle it
accelerates weird, idles funny and loses a lot of
gas when I'm only driving for a short distance
anybody possibly have any information on Chevy
cobalts I have put a lot of money into this vehicle I
have done the oil change I have done with Auto
body I've done everything you can think of and the
check engine light just keeps coming on I'm also
having oil coming up out of my air tanks so I
thought I'd come here and ask.

2 Answers

Same thing happened to my 2008 Cobalt - I have a code reader and got the same problem code - p0326. "Knock" sensor pertains to spark knock & usually indicates that the timing is too advanced or gas octane is too low. Simple fix; I put a tank of premium in mine (after turning off the code with my code reader) and that kept the check engine light off. Since the engine computer "learns" by running, it will eventually adjust the engine to an optimum running condition; HOWEVER, when the check engine light comes on, the computer resets everything to the default settings until the code is turned off and stays off, so your engine is probably running rich and the timing somewhat retarded.


Also, remember the wiring is deteriorating on these older cars. (Trust me, I have 4 of them) Just because the scanner says a sensor has failed it may no be the actual sensor. It may be the wiring that leads to it. Do all your diagnostics before spending more money on parts that may not be needed. If you don't have the skill to do that then have a shop do it. It will save you money in the long run.

Your Answer:

Chevrolet Cobalt Experts

  • #1
  • #2
    John Carson
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Chevrolet Malibu
46 Great Deals out of 1,872 listings starting at $1,700
Used Honda Civic
154 Great Deals out of 6,379 listings starting at $1,995
Used Ford Mustang
41 Great Deals out of 1,794 listings starting at $5,750
Used Chevrolet Impala
37 Great Deals out of 961 listings starting at $2,495
Used Ford Focus
74 Great Deals out of 1,926 listings starting at $1,900
Used Honda Accord
57 Great Deals out of 1,951 listings starting at $1,495
Used Dodge Charger
47 Great Deals out of 826 listings starting at $4,850
Used Toyota Corolla
146 Great Deals out of 5,535 listings starting at $2,495
Used Toyota Camry
67 Great Deals out of 1,717 listings starting at $2,888
Used Nissan Altima
65 Great Deals out of 1,554 listings starting at $2,499
Used Volkswagen Jetta
92 Great Deals out of 3,257 listings starting at $500

Used Cars for Sale

2010 Chevrolet Cobalt For Sale
60 listings starting at $4,500
2008 Chevrolet Cobalt For Sale
19 listings starting at $3,495
2006 Chevrolet Cobalt For Sale
19 listings starting at $1,595

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.