Location of knock sensor on 2002 honda crv - 2002 Honda CR-V

The knock sensor on a 2003 Honda CRV is located on the engine block. Specifically, it is located under the intake manifold, which means it can be difficult to access. Here are the steps to locate and replace the knock sensor on a 2003 Honda CRV:

1. Disconnect the negative battery cable to prevent electrical shock.
2. Remove the intake manifold. This involves removing several bolts and electrical connections.
3. Locate the knock sensor, which is located near the rear of the engine block, under the intake manifold.
4. Disconnect the electrical connector from the sensor.
5. Remove the sensor from the engine block. This may require a special tool, depending on the specific design of the sensor.
6. Install the new knock sensor, making sure it is properly aligned and tightened to the correct torque specification.
7. Reconnect the electrical connector to the sensor.
8. Reinstall the intake manifold, making sure all bolts and electrical connections are properly secured.
9. Reconnect the negative battery cable.

Note that if you are not experienced with working on engines or are unsure of how to proceed, it may be best to seek the assistance of a qualified mechanic to replace the knock sensor on your 2003 Honda CRV.

I looked 03 honda crv, 2.4L engine. A four cylinder only has one bank. I looked at wiring diagram, it only showed one knock sensor. Hope this helps. It appears to be left of starter motor. If picture is incorrect, my bad.

front of engine above oil filter

Knock sensor is a single wire red/blue wire. Sensor is located by starter under intake manifold and according to schematic goes straight to ecm pin 9. Ground is engine ground.at base of sensor

Here's a link on replacing your knock sensor. 2000 Honda Odyssey Knock Sensor Circuit Failure Here's another link with pics, http://www.odyclub.com/forums/14-periodic-maintenance/77165-rat-mouse-chew-your-knock-sensor-how-replace-w-pictures-minimal-tools-required.html

this should help, it locates most of the components related to the cooling fan with the switch included

http://www.k20a.org/upload/k20aorgspecmotor/build/thumbnails/tn_Picture%20993.jpg
right by the stater under the intake manfold, google: k20a3 knock sensor location

Just done this on a 2002 (mk2) CR-V with 2 litre ivtec petrol engine. The knock sensor is screwed into the engine block underneath the inlet manifold. The best access to it is by removing the inlet manifold but this takes time. I replaced it from below by:

1) remove the undertray that is fastened to the front bumper, to do this its two bolts and lots of plastic rivets - lever the centre pins out of the rivets and they will come out.
2) from underneath the car you can now see the knock sensor in the centre of the engine block, it has a 27mm AF hex and a cable going to it.
3) disconnect the cable from the knock sensor, it has a latch on the plug that needs to be pressed, if like me you can't reach to press the latch don't worry move on to the next step.
4) Get a large 27mm open end spanner and undo the knock sensor, if you wern't able to disconnect the cable in the previous step it is possible to take the sensor all the way out of the block with the cable still attached. It is then much easier to unlatch the cable.
5) to refit the new one you need small hands or better access - there is a plastic clip holding a cable to the engine on the left hand side of the engine I found that by removing this clip (a single 10mm bolt) I could move the bundle of cables and get better access to refit and connect the new knock sensor.
6) Fit the new knock sensor into the block, tighten it to the recommended torque (can't get a torque wrench in so just nip it up, do not overtighten).
7)reconnect the cable.
8) refasten the cable clip holding the bundle of cables you removed to get access.
9) refit undertray.
10) I don't have a code reset device and the check engine light was still on after this work but it went out after three complete engine cold,hot,cold cycles. and has stayed out since.

The knock sensor is located on the side of the engine block. And the oxygen sensors are located in the exhaust system. There will be one oxygen sensor (upstream) screwed into either the exhaust manifold or the exhaust pipe before the catalytic converter. The other oxygen sensor (down stream) will be screwed into the exhaust pipe just after the catalytic converter.

Check all fuses, then check the wiring of the two 02 sensors on either side of the cat. converter. If the fuses and wiring are fine, it is likely one of the oxygen sensors; one is about $50 and the other is $200 (parts only). Use only Honda recommended parts, not BOSCH.