P2033

4020 - P2033

Information saved in
DDE

Fault code
4020 - P2033

Fault text
DDE: Exhaust backpressure sensor before particulate filter,
signal: Open or short circuit to positive

Fault description
Monitoring of exhaust-gas temperature sensor before
particulate filter. The diagnostic trouble code is logged when
the raw sensor signal (voltage) exceeds the specified upper
limit 3280 mV.

Condition for fault identification
Test condition:
The test routine is executed only provided that no other
electrical faults are present.
Voltage condition:
The test routine is executed only provided that no other
electrical faults are present.

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