fault code 22: knock sensor

vincentvega · Post by **vincentvega** » Tue Mar 14, 2006 9:35 am

I am randomly getting check engine lights on my 1991 EJ22

i have dumped the codes and the only one is 22 - knock sensor abnormal voltage

where is hte knock sensor located on a 2.2? Any hints on where to look to track this one down?

SuBaRiNo · Post by **SuBaRiNo** » Tue Mar 14, 2006 8:04 pm

I get that code everytime i degrease my engine.

Check the main power loom plugs going to the engine. When i wet my engine a little bit of water tends to get in there giving me that code... Cleaning it out with some WD40 fixes the problem (for me) ... and filling the connector with grease stops it happening again.

Dave

Fatz · Post by **Fatz** » Wed Mar 15, 2006 8:06 am

ok i will get a pic for u soon, the knock sensor is located just below the throttle body.... it is a little black thing with a bolt through with a single lead commin out of it witha white connector... i found a pic, but it isnt mine....

that might need replaceing or relocated/retightened...
if you like i can post some links with same probs and solutions??

vincentvega · Post by **vincentvega** » Wed Mar 15, 2006 11:25 am

any info you have would be great mate. thanks

vincentvega · Post by **vincentvega** » Wed Mar 15, 2006 11:26 am

subarino: you may be onto something. I did a trip recently wiht a whole heap of water crossings on it..

Fatz · Post by **Fatz** » Wed Mar 15, 2006 11:43 am

here are some threads with really helpful info..

http://www.rslibertyclub.org/forums/sho ... r+relocate

http://www.ultimatesubaru.net/forum/sho ... ensor+ej22

there you go, that should be enuf info for a while...

Outback bloke · Post by **Outback bloke** » Wed Mar 15, 2006 3:37 pm

I used to have a similar problem with the white RS I had. I ended up just taking it out and cleaning the surface where it bolts to the block and the connection (plug) behind the TPS. Worked perfectly after that. You will have three plugs there. One is crank sensor (dk grey), one is cam sensor(lt grey) the other is the knock sensor (single wire, white plug).

Fatz · Post by **Fatz** » Mon Mar 20, 2006 12:52 pm

howd it all go??

vincentvega · Post by **vincentvega** » Mon Mar 20, 2006 1:04 pm

havnt looked into it any further yet. too busy driving it