P10DB

4602 - P10DB

Information saved in
DDE

Fault code
4602 - P10DB

Fault text
DDE: Reducing agent, output of feed line heater too high:
Short circuit, heater circuit

Fault description
The error is recognized when the resistance following
activation of the metering line's heating unit rises above a
specific limit value.

Condition for fault identification
Test condition:
A check for this error runs once per heating cycle.
Voltage condition:
A check for this error runs once per heating cycle.

Condition for fault memory entry
Event debounced (1)

Action in service
1. Check wires and plug connections.
2. If wiring and plug connections are OK:
3. Check resistance in the metering line heating unit
4. Replace metering line heating unit.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
Resistance in the metering line heating system:
E70: 3.8 - 4.4 ohms
E90: 1.5 - 1.7 ohms