Knock sensor. Please help!

Asked by Jun 22, 2017 at 02:29 PM about the 2010 Chevrolet Cobalt

Question type: Maintenance & Repair

hey guys was wondering if you can help me out, I have a
2010 cobalt LT and the check engine light came on
recently so I pulled the codes and p0327 came up and
said it might be the knock sensor, a knock in my engine or
low fuel pressure. I dont really hear a rattle coming from
the engine and after I pulled the codes the check engine
light turned off. Maybe it's a bad connection with the
sensor?? Any help is appreciated and thanks in advanced
guys

8 Answers

5,145

Maybe. A bad connection could show up as a failed sensor. Check the connection and drive it for a bit. Then scan for codes again. If it shows a failed sensor again, you might want to change the sensor. If it says low fuel pressure you might want to check your fuel pressure and correct it if it's low.

Any luck with this problem? I have the same issue.

5,145

Did you trouble shoot your fuel system and change the knock sensor?

I have replaced tbe sensor, sensor connection, tested sensor wires for conductivity as well as output voltage. Still get the code like clockwork on every start for the last year.

Fuel system, no, could that affect this?

5,145

I haven't researched it myself, but the original poster said one of the possibilities was low fuel pressure. Wouldn't hurt to check that out. I've also noticed a number of threads here where problems were solved by cleaning up, tightening and occasionally rewiring and even adding grounds. There are several on that car and some seem to degrade over time. Modern auto electrical systems are extremely sensitive to things like bad grounding, so that might be worth looking into. Spend a little time reading through some of the other posts on this site regarding Cobalt issues. You might find some more clues to follow.

Thank you sir

Finally solved. Wiring harness wore through where it was touch on the oil filter housing. It was shorting to ground through the engine. Repaired wire and sll good.

Your Answer:

Cobalt

Looking for a Used Cobalt in your area?

CarGurus has 208 nationwide Cobalt listings starting at $2,490.

Postal Code:

Chevrolet Cobalt Experts

  • #1
    munron
    Reputation
    1,350
  • #2
    dandyoun
    Reputation
    1,060
  • #3
    MoGo
    Reputation
    1,010
View All

Related Models For Sale

Used Chevrolet Cruze
61 Great Deals out of 7,451 listings starting at $3,200
Used Honda Civic
117 Great Deals out of 5,028 listings starting at $100
Used Chevrolet Malibu
46 Great Deals out of 1,985 listings starting at $2,390
Used Ford Focus
48 Great Deals out of 2,542 listings starting at $2,534
Used Chevrolet Impala
18 Great Deals out of 1,010 listings starting at $2,994
Used Chevrolet Camaro
6 Great Deals out of 1,003 listings starting at $4,500
Used Ford Mustang
22 Great Deals out of 1,220 listings starting at $5,995
Used Toyota Corolla
119 Great Deals out of 4,274 listings starting at $2,300
Used Honda Accord
33 Great Deals out of 1,673 listings starting at $1,800
Used Honda Civic Coupe
34 Great Deals out of 1,054 listings starting at $3,295
Used Toyota Camry
26 Great Deals out of 2,104 listings starting at $2,995
Used Dodge Charger
39 Great Deals out of 915 listings starting at $4,490
Used Nissan Altima
38 Great Deals out of 1,230 listings starting at $2,995

Used Cars For Sale

2010 Chevrolet Cobalt For Sale
60 listings starting at $2,995
2009 Chevrolet Cobalt For Sale
34 listings starting at $7,400
2006 Chevrolet Cobalt For Sale
30 listings starting at $2,490

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.