Skip the auto shop - Our mechanics make house calls

Q: Having trouble trying to locate my knock sensor. It's throwing a code for it. 1,2,4,5,6 cylinder misfires

asked by on

Having trouble trying to locate my knock sensor. It's throwing a code for it. 1,2,4,5,6 cylinder misfires Could the knock sensor cause the misfires? And where do I locate knock sensor on my type 01 Jetta vr6 2.8L 12V
My car has a manual transmission.

A: As you may know a knock sensor may fail for...

As you may know a knock sensor may fail for any of the following reasons:

  • The knock sensor is faulty and needs to be replaced
  • There is a wiring open/short/fault in the knock sensor circuit
  • The PCM/ECM has failed

Any of the above could potentially cause a misfire. The knock sensor should be located under the intake manifold between cylinders #1 and 2.

If you need assistance with this, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose the misfire firsthand and help you fix it accordingly.

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: Camshaft Position Sensor

Hello, thanks for writing in about your Dodge Challenger. From what you've described it sounds like you may have a different sensor than what the auto parts store has listed. If you go to the dealer you would be able...

Q: What else should I do?

The fuel injectors on this engine can intermittent stick causing a misfire. The fix is to replace the injector for the cylinder having the problem. This is from a carbon build up in the injector pintle. I would recommend having...

Q: My car shut off while driving and it won't turn back over

Assuming the engine is getting fuel with the new fuel pump, the next step would be to check for spark. The engine needs spark, air, and fuel to start and run. Air is almost always present, and again assuming fuel...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...