3F00 - P0238 (DDE)

3F00 - P0238

Information saved in
DDE

Fault code
3F00 - P0238

Fault text
DDE: Boost-pressure sensor, signal: Short circuit to positive

Fault description
Boost-pressure sensor monitoring function. The diagnostic
trouble code is logged when the raw sensor signal (voltage)
exceeds the specified upper limit 4950 mV.

Condition for fault identification
Test condition:
The monitoring function is only implemented when no
sensor power-supply problem is present. The check
frequency depends on the process sequence control.
Voltage condition:
The monitoring function is only implemented when no
sensor power-supply problem is present. The check
frequency depends on the process sequence control.

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 boost-pressure sensor.

Fault effect and breakdown warning
Power reduction.
The error disables regeneration in the particulate filter.
Proceed to the nearest BMW Service facility.

Driver information
Warning light:
MIL

Service instruction
none