4601 - P20B5 (DDE)

4601 - P20B5

Information saved in
DDE

Fault code
4601 - P20B5

Fault text
DDE: Reducing agent, output of delivery module heater too
low: Open circuit, heater circuit

Fault description
The error is recognized when no lead value stroke has been
recognized after a specific period of time, meaning that the
lead value remains below the threshold 0 1/Ohm.

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 resistance of delivery module heater unit.
2. Replace delivery module.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
Delivery module heating unit resistance:
2.9 - 5.5 ohms