I was driving a short trip from work to home to see to the dog for his lunch during which the glow plug light started flashing. I don't know if the car was in limp home mode as I decided to take it easy rather than rev it hard. I switched it off when I got home and back on again, the glow plug light came on with ignition as normal and disappeared almost straight away and the engine came to life all as normal with no sign of the flashing glow plug light. I continued to drive to work without anything noticeably wrong on the way.

I've had a read through the forum and this problem seems to occur most commonly with a brake light fault or with a DPF problem, so far I don't seem to have problems with either of those as brakes are working and there's no other lights on the dashboard. I didn't find anyone who'd had this light come on as a one-off then disappeared without trace which is what concerns me. Annoyingly I was planning to head down to Manchester and back this weekend (1,000 mile trip) which I'm now a bit uneasy about. My local Skoda dealer's service department is currently in a bit of a mess although I guess I could take it to VW or Seat to have a look although that may not be useful unless the light is on. So I'm thinking of taking the car for a run this evening and see if the light comes on again.

Any thoughts or advice gratefully received.

John

hi does the light come on when the engine is under load ie in top gear and full throttle or going up hill if yes to this it could be injectors leaking.and you would need to have a bleed off test on the injectors.i had the same problem on a mondeo tdci light would come on i just switched the car on and off and then you could carry on.bill

I haven't been able to try the car under load, will do so after work. Checked with a workmate and all my lights and other electrics seem fine. Definitely no sign of smoke from the rear either.

Edit - Gave the car a good 40 minute run this evening and no lights nor any noticeable issues, seemed to be picking up acceleration fine and going through the gears ok.

John

Edited 18 May, 201115 yr by JohnMcL7

I had the same issue at 4500km on my 1.6tdi, turned car off and read the book.

Turned the car on and like you the light went out and until today, has 20500km, never again showed up.

Thanks for your reply, that gives me a bit more confidence to just go ahead as normal.

John

I think it’s something with one of the injectors, so one of them is not working properly and sooner or later it will fail. I changed so far 2 on my car and the glow plug light was on for a short time on the first case and like yours I drive the car for a while, couple of weeks I think, but when the injectors go the glow plug light come on with the hazards and the car won’t start at all.

That is classic brake light switch problem. Had it on my mk1 Fabia vRS, no brake lights, flashing glow plug light, cured itself after a few days. If you can get someone local with VCDS to do a fault code read then that should put your mind at rest.

Ian

Reading around the problem seemed to be common on mk IV based cars but less so on mk V's?

I'd decided to head onto Manchester but tonight on the way to the petrol station the light came back on, I've hooked it up to a computer (after the flashing light disappeared again) and I'm getting the following error:

005522 - Altitude Sensor / Boost Pressure Sensor: Implausible Correlation

P1592 - 006 - Short to Plus - Intermittent

Freeze Frame:

Fault Status: 00000001

Fault Priority: 5

Fault Frequency: 2

Reset counter: 40

Mileage: 40837 km

Time Indication: 0

Date: 2000.00.00

Time: 00:57:31

Freeze Frame:

RPM: 0 /min

Torque: 0.0 Nm

Speed: 0.0 km/h

0.00 %

Voltage: 11.07 V

Pressure: 1001.1 mbar

Pressure: 1299.3 mbar

I've had a quick read on fault codes and the common cause stated for this is a short somewhere?

There's a couple of faults with the steering wheel due to the cruise control (which works fine) so I assume these are nothing to worry about:

005784 - Please Check DTC Memory of Steering Wheel Electronics

P1698 - 008 - Implausible Signal - Intermittent

Freeze Frame:

Fault Status: 00101000

Fault Priority: 0

Fault Frequency: 10

Reset counter: 40

Mileage: 40590 km

Time Indication: 0

Date: 2000.00.00

Time: 00:16:31

Freeze Frame:

RPM: 1472 /min

Torque: 88.0 Nm

Speed: 29.0 km/h

0.00 %

Voltage: 14.24 V

Bin. Bits: 11001100

Bin. Bits: 00000000

00895 - Cruise Control Switch (E45)

014 - Defective - Intermittent

There's also a fault on the alarm system which I guess is unrelated which would explain why the alarm doesn't seem to make much noise:

Component: Sounder No Answer

Component: NGS n.mounted

1 Fault Found

01134 - Alarm Horn (H12)

004 - No Signal/Communication

John

Edited 20 May, 201115 yr by JohnMcL7

I decided to try my cruise control this evening after seeing the error and sure enough it's dead, always worked flawlessly before (reading up on the contact switch issue it seems intermittent before it completely goes) and I'm sure it's worked recently so I'm thinking it's no coincidence it's gone at around the same time this engine error appears. I'll need to check that Warranty Direct cover the Cruise Control and if so dump the car into the dealer for that and mention the engine issue so at worst they fix the cruise control.

Edit - Car's been with Skoda, they can't find anything wrong with it bar the intermittent cruise control switch

John

Edited 23 May, 201115 yr by JohnMcL7

hi friends, i am using skoda octavia ,,since  (last 1week i am facing this problem, ) glow plug symbol is flasing and when i start my  engine , its starts normally ,,,and during the run , when i slow down my car, by applying brakes, my engine suddenly stops , and glow plug symbol fashes ,can any one ple help me....... ( my back tail lamps are working)