Chasing error codes

[fastjet]

Hi, I could do with some help please to resolve an error code thrown up by Lexia. I ran a global scan and the following error was shown.
Injection - pre-post heating relay short circuit to positive. Error code P0380 - Tree connectors.
I have checked the glow plug wiring and I cannot find anything that appears to be out of place. The glow plugs themselves are in good condition and have constant values across the four.

Can anyone help out with suggestions on what might be causing this and how to fix it?

Thanks

[GiveMeABreak]

Ignore it. It’s generally a ghost fault as the glow plugs do very little on an HDi apart from helping on cold starts and assisting with regeneration (on DPF models). This is a common ‘fault’ and can normally be ignored.

[ekjdm14]

Ignore it. It’s generally a ghost fault as the glow plugs do very little on an HDi apart from helping on cold starts and assisting with regeneration (on DPF models). This is a common ‘fault’ and can normally be ignored.

From my recent experience, I'd suggest this code is caused by one or more of the glow plugs having failed (despite consistent ohms measured). As mentioned, I'd advise ignoring this code since the HDi will indeed start and run just fine without any functioning GP's. It's when the last plug fails that you have an issue I believe. On our 206 this resulted in an EML, "antipollution fault" message and 3000rpm limp-home rev limit, whereupon I embarked on the GP change which turned into a head-off job due to a snapped off tip (the very reason why I'd ignore the GP's until they're all dead, only risk trying to remove them when the ECU forces your hand!)