T5 flashing glow plug warning light

Hi there,

I have a 2012 T5.1.

A few days ago whilst driving the glow plug light started flashing, engine machine light came on and the van went into limp mode.

Codes suggested the MAF sensor was faulty so I replaced that then cleared the codes. This seemed to fix the problem and the van drove fine for a few days until the glow plug light started flashing again randomly. This is now intermittent and doesn't always come on when the van is driven. I've pasted a read out of the diagnostics below. Hopefully someone can help.

Thanks!

Car Scanner ELM OBD2
Version: 1.100.2/401002/GP
DTC report
Connection profile: Volkswagen OBD-II / EOBD 1.0L-2.0L TSI/TFSI CAN-UDS + AT/DSG (PQ26, MQB, MLB, MSB, etc.)Date: 01/10/2023 22:37:33
VIN:
============================
OBD-II
No DTC found.
============================
19. CAN Gateway
No DTC found.
============================
09. Onboard supply control unit09. Onboard supply control unit
DTCs: 2
----------------------------
03303 [0x0CE7]
Status: Test is inhibited by other DTC, Validated and stored in non volatile memory
----------------------------
00920 [0x0398]
Exterior Mirror Heating Elements (Z4 / Z5); heated exterior mirrors (Z4 / Z5)
Status: Test conditions are met, Test is inhibited by other DTC, Validated and stored in non volatile memory, Validated fault present at time of request
============================
03. ABS control unit03. ABS control unit
DTCs: 1
----------------------------
01314 [0x0522]
Engine control unit
Status: Pending fault present, Test conditions are met, Test is inhibited by other DTC, Validated and stored in non volatile memory
============================
01. Engine control unit01. Engine control unit
DTCs: 2
----------------------------
11901 [0x002E7D] Archive (inactive)
P023600: Turbocharger Boost Sensor (A) Circ., Range/Performance
Status: Test failed since last DTC clear
----------------------------
04124 [0x00101C] Archive (inactive)
P065100: Sensor Reference Voltage "B" Circuit Open
Sensor Reference Voltage "B" Circuit, Open
P065100: Sensor Reference Voltage "B" Circuit Open
Status: Test failed since last DTC clear
============================
08. Heater and climate
No DTC found.
============================
10. Parking Assistant 2
No DTC found.
============================
15. SRS
No DTC found.
============================
17. Dashboard
No DTC found.
============================
25. Immobilizer
No DTC found.
============================
76. Parking assistant
No DTC found.

Where is address 01?

Hi Crasher, thanks for you reply.

Do you mean 01 engine control unit?

The only codes were the ones shown as archived above.

01. Engine control unit01. Engine control unit
DTCs: 2
----------------------------
11901 [0x002E7D] Archive (inactive)
P023600: Turbocharger Boost Sensor (A) Circ., Range/Performance
Status: Test failed since last DTC clear
----------------------------
04124 [0x00101C] Archive (inactive)
P065100: Sensor Reference Voltage "B" Circuit Open
Sensor Reference Voltage "B" Circuit, Open
P065100: Sensor Reference Voltage "B" Circuit Open
Status: Test failed since last DTC clear

I can scan again tomorrow if I've misunderstood.

Cheers