4021 - P2032 (DDE)

4021 - P2032

Information saved in
DDE

Fault code
4021 - P2032

Fault text
DDE: Exhaust backpressure sensor before particulate filter,
signal: Short circuit to ground

Fault description
Monitoring of exhaust-gas temperature sensor before
particulate filter. The diagnostic trouble code is logged when
the raw sensor signal (voltage) is less than the specified
lower limit 49 mV.

Condition for fault identification
Test condition:
The test routine is executed only provided that no other
electrical faults are present. The error check proceeds
continuously according to the defined process grid.
Voltage condition:
The test routine is executed only provided that no other
electrical faults are present. The error check proceeds
continuously according to the defined process grid.

Condition for fault memory entry
Debounce (600 ms)

Action in service
1. Check wires and plug connections.
2. If wiring and plug connections are OK:
Replace exhaust-gas temperature sensor before particulate
filter.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none