Bam 0 Posted December 19, 2006 hi there, i have upgraded my 2.0 turbo. (big projekt) new mapsensor,chip,inletmanifold,outletmanifold,turbo,injectors and so on... ECU shows an errorcode: 54 "change ecu/knocksensor" habe tried lots of thinks. changed sparkmodul etc. have measured all wiring(loom)...nothing, all ok. changed chip also... knows anybody this error??? (known hints?) cheers Share this post Link to post Share on other sites
TB_205GTI 1 Posted December 19, 2006 Tried changing the knock sensor Share this post Link to post Share on other sites
Bam 0 Posted December 19, 2006 @tb ehm.... how to check the knocksensor..has anybody some infos? R? A or V? ... ?... cheers mik Share this post Link to post Share on other sites
sonofsam 5 Posted December 19, 2006 To check the knock sensor you need an Oscilloscope, full details here :http://www.brickboard.com/ARCHIVES/2001SEP/20180393.shtml Share this post Link to post Share on other sites
pugrallye 0 Posted December 27, 2006 and when replacing, do not do it up too tight, its a crystal microphone and they crush v v easily Share this post Link to post Share on other sites
jacobs53 0 Posted December 27, 2006 you can test the knock sensor without an oscilloscope, if you use a multimeter and tap the engine block with a metal spanner. There should be a voltage increase while tapping, if there isn't the sensor is at fault. There is also a resistance test but I can't remember the specified values. lee Share this post Link to post Share on other sites
TB_205GTI 1 Posted December 27, 2006 you can test the knock sensor without an oscilloscope, if you use a multimeter and tap the engine block with a metal spanner. There should be a voltage increase while tapping, if there isn't the sensor is at fault. There is also a resistance test but I can't remember the specified values. lee Depends on what frequency the knock sensor reacts on. Share this post Link to post Share on other sites
jacobs53 0 Posted December 27, 2006 every knock sensor I have ever come across has always responded to a soft tap on the engine block. lee Share this post Link to post Share on other sites
