FIXED - NO MIL LIGHT, NON START, NO COMMS WITH ECM

[Hendred]

Just a post with a fixed problem for information. I had a non starting 2007 Skoda Octavia Estate Scout 2.0TDI PD. 
 

No engine management light, no coil light, no DPF light illuminating, all other lights illuminating such as abs, airbag etc when they should, engine just cranking over. I plugged it in through OBD using snap on solus pro. No communication with ECM under engine management. I checked other modules such as abs, airbag, they all stated no comms with ecm. 
 

There is a relay in fuse box under bonnet with 370 on it, only relay under there. This was clicking as it should. I pulled it out and put a wire across where the switched side of relay would be and problem solved so swapped relay and now fixed. I also checked the energising side of where relay would be (12v). So be warned a relay can still appear ok by clicking but not necessarily be ok.

 

Hope this helps if anyone else has the same problem. 

[farty]

Did you have a spare really just handy?  Well done and thanks for this info.

[Hendred]

I took it off a golf mark 5 that’s scrap at my work, not recommended as that could of been faulty too but I was confident it was relay due to using wire in fuse box in place of relay. 

Edited 13 December, 2020 by Hendred