Flashing glow plug and limp mode

[dode4444]

Hi all,

Had my car about 2 months now and no problems until today.

Pulled out to overtake and as soon as the car dropped down a gear the car lost most of its power and went into limp mode with the glow plug light flashing.....
As I pulled over to stop the engine management light is now on and constantly illuminated along side the glow plug flashing and limp mode.

Anyone had any experience with this situation/problem?

Car is booked in at my local garage tomorrow to do a diagnostic fault read.

Thanks.


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[robes401]

Interestingly I had a very similar problem a couple of weeks ago. I was sat through roadworks on a dual carriageway at about 40 mph. When the roadworks ended I pulled out to overtake and accelerated quickly, at which point the glow plug light started flashing (indicating a problem with the engine management) and the car went into limp mode. I pulled off at the next exit and got the manual out which said drive to nearest service centre, but when I switched the car back on the light went off and has stayed off since. I have scanned the car which reported the following which suggested a stuck turbocharger actuator:

9127 - Actuator Module for Turbocharger 1
P00AF 00 [096] - Stuck
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 178419 km
Date: 2020.01.21
Time: 22:12:02


Engine speed: 3869.50 /min
Normed load value: 99.6 %
Vehicle speed: 106 km/h
Coolant temperature: 88 °C
Intake air temperature: 99 °C
Ambient air pressure: 1030 mbar
Voltage terminal 30: 14.460 V
Unlearning counter according OBD: 30
Turbine actuator 1 bank 1: posit.feedback - Spec.value: 5.00 %
Turbine actuator 1 bank 1: posit.feedback - Act.value: 43.91 %
Turbine actuator 1 bank 1: posit.feedback - Offset closed: 0.20 %
Turbine actuator 1 bank 1: monitoring - status-Bits 0-7: 0
Turbine actuator 1 bank 1: monitoring - status-Bits 0-7: 55
Turbine actuator 1 bank 1: monitoring - status-Bits 0-7: 0
Turbine actuator 1 bank 1: monitoring - status-Bits 0-7: 8
Turbine actuator 1 bank 1: posit.feedback - Uncnd vlt: 2538.4 mV
Accelerator pedal travel: raw value: 100.00 %

I have a C7 pre-facelift Ultra - 2.0 tdi.

[Alan02]

Likely to be a Overboost fault.

[dode4444]

Got a loan of a mates generic scanner and got the above message so hopefully nothing terminal....
Pitch black outside so will give a good look over tomorrow checking for anything obvious although I’m not hugely mechanically minded.

Thanks for all help so far folks!


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[dode4444]

Thought I’d update incase it ever helps anyone out.....


In daylight I’ve managed to check over the car with a good mate who’s a mechanic.
We found the intercooler intake hose had popped off so replaced with a more heavy duty jubilee clip and cleared the code with the diagnostic reader....

Took it a spirited drove and all is well.

Thanks.


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