Skip the auto shop - Our mechanics make house calls

Q: Getting a trouble code for knock sensor

asked by on

The Check Engine Light is on. The trouble code is indicating it is a knock sensor.

A: Hi there. I would recommend having a techni...

Hi there. I would recommend having a technician come out and replace the knock sensor on the car. The knock sensor is on the engine block and detects if there is a misfire in the engine or a spark knock. If it detects a knock, then it will retard the timing of the vehicle to compensate. The symptoms of a bad knock sensor usually show up at highway speeds or under a load. This sensor affects the ignition timing of an engine. The vehicle will have a loss in fuel mileage and acceleration especially at highway speeds. If you need further assistance, I recommend you have a mechanic, like one from YourMechanic, inspect the Check Engine Light and replace any failing parts.

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: How do you play a CD?

Your car’s audio system is able to play a wide range of discs, including CDs, CD-Rs and more. If you’re not sure how to load a disc or listen to it, here’s what you need to know: Turn on...

Q: Check Engine Light is on, trouble code P0011&12. I changed the oil and filter. I need to turn off the engine light to see if that problem is solved.

Hello. If the oil level was low or if the wrong oil war previously used then that can cause these codes to come up. Most of the time though, on this engine, it is caused by a failure in the...

Q: When start out driving when accelerate does good to 2000 rpm and then when go to accelerate more it drops off and have to let off

Hello. From what you describe, it would appear that your vehicle is experiencing some sort of engine performance issues. Problems accelerating under load can be caused by many things. A few common causes are issues with the ignition, engine management,...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.