4A34 - P0674 (DDE)

4A34 - P0674

Information saved in
DDE

Fault code
4A34 - P0674

Fault text
DDE: Glow plug, cylinder 4, activation:

Fault description
The glow-plug preheating control module reports a
resistance fault at glow plug 4 in a LIN message.

Condition for fault identification
Test condition:
The LIN message is transmitted every 500 ms.
Voltage condition:
The LIN message is transmitted every 500 ms.

Condition for fault memory entry
Debounce (1200 ms)

Action in service
1. Check wires and plug connections.
2. Check part numbers of installed glow plugs, replace with
correct glow plugs as indicated.
3. If wiring and plug connections are OK:
Replace glow plug 4.

Fault effect and breakdown warning
Poor starting at low temperatures.
Proceed to the nearest BMW Service facility.

Driver information
Warning light:
MIL

Service instruction
Remove glow plugs with engine warmed to normal
operating temperature to avoid damage to the cylinder head.