knock sensor location

Note: Knock sensor may also be referred to as knock sensor No. 1.


Removal and Installation (Camry)

1. Knock sensor is located on side of cylinder block, just below intake manifold. See Fig. 10.
2. Service information is not available from manufacturer. It may be necessary to remove engine with trans- axle to gain access for removal of intake manifold. For engine removal, see appropriate article in engines.
3. It may be necessary to remove intake manifold for access to knock sensor. Use Oil Pressure Switch Socket (SST 09816 30010), or equivalent, when servicing knock sensor.
4. Tighten knock sensor and intake manifold bolts/nuts (if removed) to specification. See Torque specifications.

Fig. 10: Locating Knock Sensor (Camry and Highlander)

So, I will not have to take off the intake manifold to get to it then, right?

Reread item 3.

Sorry, hmac300! I did not see your response at first. It looks as though I will have to take off the intake manifold in order to get to the sensor, unless I can find an extension wrench. Why do they have to make everything so difficult and frustrating to get to?

because they make cars to assemble not repair. engineers do not think that way because they have never repaired a car.

Well said! Thanks for your help! I think I have a better understanding of where it is located and what it is going to take to get to it, now. Also, I was told that I can tap the engine block to make sure it is not just a lose wire or corrosion built up, first.

If you have the correct tool then you do not need to remove the manifold.

Yes, you can do that with tapping the block.

"I was told that I can tap the engine block to make sure it is not just a lose wire or corrosion built up, first".
No, not exactly.

If you have a scan tool with the capability of monitoring the knock sensor signal, you can simulate a knock by tapping on the block and see if the computer sees it but you already know it is not because it is setting the code. It will not tell you what the issue with the circuit is though.

For Toyota engines this sensor is a common failure.

KHLow2008, what is this correct tool you are referring to? It would nice to know since it will save me the trouble of having to take off the manifold.

Would someone just tell me what they would do if they were the one replacing the part? Hopefully I will not have to remove the engine (which is mentioned above) to get to this booger. The sensor does not knock/rattle at all, so I am thinking it might just be a lose wire.

A 24 mm long socket with thin sides. From underneath vehicle check if you have space for an open end wrench.

Definitely you need not remove the engine.

"The sensor does not knock/rattle at all, so I am thinking it might just be a lose wire".

No, you are way off with that. The sensor does not cause knocks. It tells the computer when it senses ignition ping so the computer can adjust the timing to get rid of it. The code is telling you that the sensor is not working. The tech has to diagnose the circuit to determine the reason it does not work which could be anything in the circuit. The sensor itself is the most common cause as Klow2008 pointed out.

Okay! I was thinking I would have to get to it from on top after reading a couple of replies from above. It got me confused! It looks like the easiest way is getting to it from underneath in which all I will have to do then is unplug and unscrew it. Is this correct?

Yes, from underneath is an easier option.

I just want to clarify, on a four cylinder engine, the knock sensor is located on the backside of the engine block, directly below the cylinder head (facing the rear of the engine compartment).

1. Disconnect the cable from the negative terminal on the battery.
2. Pinch off the coolant hoses to the throttle body before removing the intake manifold/throttle body).
3. Remove the intake manifold.
4. Disconnect the electrical connector and remove the knock sensor.
5. If you are going to reuse the old sensor, coat the threads with thread sealant. New sensors are pre-coated already. Do not apply any additional sealant or the operation of the sensor may be affected.
6. Install the knock sensor and tighten it securely (approx. 30 ft-lbs). Do not over-tighten the sensor or damage may occur. Plug in the electrical connector, refill the cooling system and check for leaks.

Engine Mechanical problem
2002 Toyota Camry 4 cyl Two Wheel Drive Automatic

Where is the knock sensor located on my 2002 Toyota camry 2AZ engine. My check engine light is on after I just changed the head and the Oil Balancer.

INSPECTION REMOVE ENGINE FROM VEHICLE REMOVE INTAKE MANIFOLD AND THROTTLE BODY ASSEMBLY

REMOVE KNOCK SENSOR Disconnect the knock sensor connector. Using SST, remove the knock sensor. SST 09816-30010

INSPECT KNOCK SENSOR Using an ohmmeter, check that there is continuity between the terminal and body. If there is continuity, replace the sensor. REINSTALL KNOCK SENSOR Using SST, install the knock sensor. SST 09816-30010 Torque: 44 N.m (450 kgf.cm, 33 ft.lbf) Connect the knock sensor connector. REINSTALL INTAKE MANIFOLD AND THROTTLE BODY ASSEMBLY INSTALL ENGINE TO VEHICLE https://www.2carpros.com/kpages/auto_repair_manuals_alldata.htm

Hello,

The check engine light has come on and the code showing is PO325 (knock sensor - bank 1). My Haynes manual has a very non-specific drawing as to the location of the sensor. Do you have a link to a good picture of the location or step-by-step instructions on accessing it? Good diagrams of the engine space could be very helpful.

A little additional info on the car:
Manufactured Kentucky 12/99
VIN: 4T1BG22K2YU960239
Model No.: SXV20L-CEPNKA

Thanks for your time!

Hello,

It looks like it is under the intake manifold. Here is a diagram of the location (below)

You will need to jack the car up to get to it.

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken

Engine Mechanical problem
1996 Toyota Camry 6 cyl Front Wheel Drive Automatic

need help finding the 2 knock sensors

You have to remove the intake manifold to see them. They screwed onto the heads.