W3E VW Posted August 13, 2008 Report Share Posted August 13, 2008 my gti seems to be down on power intermittant. ran vag comm, fault was camshaft sensor/ engine speed sensor inccorec allocation. replaced camshaft sesor, vvt valve chekd timing is ok. fault sill there. not done a g40 speed sensor. any1 had a simelar problem?? Quote Link to comment Share on other sites More sharing options...
CasperGTI Posted August 13, 2008 Report Share Posted August 13, 2008 (edited) 17748/P1340/004928 - Camshaft Position Sensor (G40) / Engine Speed Sensor (G28): Incor. Correlation Possible Causes Timing Belt/Chain incorrectly installedTiming Chain probably lengthened Camshaft Position Sensor (G40) faulty Engine Speed Sensor (G28) faulty Possible Solutions Check Timing Belt/Chain installationUse Measuring Value Blocks (MVB) to Check Timing Chain Check/Replace Camshaft Position Sensor (G40) Check/Replace Engine Speed Sensor (G28)Id take a guess at one of the sensors. You can check the G40 sensor but unplugging it and putting a multimeter on the connectors. Its either resistance related to engine speed or its phonetic so will give off a voltage. Set it to measure resistance and see if it changes resistance when you accelerate. or set it to DC voltage and see if it increases voltage when you accelerate. Hope that helps, replied to to your PM too John Edited August 13, 2008 by CasperGTI Quote Link to comment Share on other sites More sharing options...
Nadeemaashraf Posted February 10, 2015 Report Share Posted February 10, 2015 I've got the same issues 17748 fault code with g40,g28 errors. Only issue is my car is not starting. Please help. Quote Link to comment Share on other sites More sharing options...
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