Glow plug problem

Cbub

New member
Joined
Aug 18, 2021
Location
Dublin
TDI
2000 jetta
My 2000 tdi jetta keeps throwing a code glow plug not working.i have replace all glow plugs wiring and relay module on coolant and engine. Code is po380
 

Curious Chris

Top Post Dawg
Joined
Jun 11, 2001
Location
Pineview GA
TDI
Jetta Wagon 2003 RIP Rockford IL
16764/P0380/000869 - Glow Plug/Heater (Q6) Circuit: Malfunction
Possible Symptoms
  • No Pre-Glow Period
  • Poor Cold Starting
Possible Causes
  • Glow Plug Wiring faulty
  • Glow Plug faulty
Possible Solutions
  • Check Glow Plug Wiring
  • Check Glow Plug
Special Notes
 

wonneber

Top Post Dawg
Joined
Oct 12, 2011
Location
Monroe, NY, USA
TDI
2014 Jetta Sportwagen, 2021 Atlas,2003 Jetta 261K Sold but not forgotten
When you turn the key on does the glow plug light on the dash come on, even for a second?
Your Dublin 2000 may be different then what we have on this side of the pond.
 

BobnOH

not-a-mechanic
Joined
May 29, 2004
Location
central Ohio
TDI
New Beetle 2003 manual
For some odd reason the glow plug codes need to be cleared with a suitable OBDII device like VCDS.
 

Stupendous60

Veteran Member
Joined
May 18, 2019
Location
TX
TDI
2000 Beetle TDI automatic "Otto", 2000 Beetle TDI manual "Amfeny", 2000 Beetle TDI manual "NC", 2002 TDI Beetle manual "Manny" 2019 Beetle gas/auto "Nunu"
Cbub, suspect the glow plug harness.
 

mittzlepick

Veteran Member
Joined
Mar 18, 2001
Location
union maine
TDI
2004 jetta wagon (365k)2001 wagon tire burner 6spd 2003 wagon(417k)
Tested it all with meter? Was it a short or long wire harness? Maybe a bit of differential in your crimp if it is a shorty, or a bad new gp. Test individual resistance and continuity in them and the harness. Being a 2000 its a two wire yes? Dodgy parts?
 
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