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: Rear main seal leaking

Hi there. The only way to fix a rear main seal is to remove the transmission, pull out the old seal with a seal puller, and install a new one. It is an extensive procedure and needs to be performed...

Q: Computer reads accelerator pedal sensor when it has already been replaced.

Hello. It is possible that you received a bad pedal assembly because this is a common failure on this vehicle. Most of the time, though, the issue is not in the pedal assembly but it is in the throttle body....

Q: Knock Sensor + Wiring Harness installation cost? Will YourMechanic install parts if I provide them?

Hello. Yes we will install parts that are provided by you but doing so will void our warranty. You will also be charged for the technicians time if the part you provide does not fit properly. After we install the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...