Hi all,

 

I was recently greeted by an engine warning light in my 2015 1.6 TDI 105hp Octavia Estate, engine code CLHA. Quick code reader scan identified error code P0673 Cylinder 3 Glow Plug Circuit Open.

 

I have performed continuity tests on all four glow plugs with only cylinder 3 showing no continuity, matching the error code, and as such I'll be looking to replace.

 

However I have seen conflicting information on whether the cylinder 3 glow plug is a regular or one with the pressure sensor. Both types are shown on the glow plug drawing on CarProg2, however only "PR:7MM" is shown as engine code, and there is no indication as which cylinder each type is located.

 

Any advice would be greatly appreciated

Hi

Got the same error, the rubber coating of the electrical connection is slowly ripped apart due to heat and dryness, causing the glow plug contact to jump out of place.

I've bought a second hand wire loom for the entire engine, and using this as donor.

each glow plug repair kit costs ~46 euro (in ebay germany from what i've seen) while the entire wire loom is ~60 euros and you get all the wiring you want, so consider purchasing entire loom 2nd hand.

 

also,

Got a DGT and CXXB engine, both these engines got glow plug in cylinder 3 and they are also coming with PR:7MM engine code.

To be on the safe side, PM me the VIN number of your car and i will send you the precise car part number.

In the erwin data, it says that after replacing the glow plug with the pressure sensor you need to reset learnt values of pressure sensor, etc from VCDS or ODIS.

 

PS-Per erwin manual, CLHA also has the pressure glow plugs in cylinder 3.

Edited 19 December, 20232 yr by Matanfr

Yes, the glow plug on cylinder 3 is a special unit, but try to replace all of them at the same time as they will all be of a similar age and needing to be replaced.