Manufacturer Code Charts: 121101

121101 - P0242

Information saved in
DME

Fault code
121101 - P0242

Fault text
Charge-air pressure sensor 2, electric: short circuit to
positive

Fault description
The diagnostic function monitors the upper voltage limit of
the boost-pressure sensor for Bank 2.

Condition for fault identification
Test condition:
The fault is recognized when the voltage of boost-pressure
sensor 2 is > 4.75 V with engine running or > 2.85 V when
the engine is not running.
Potential problem source(s):
- Defect in wiring harness
- Charge-air pressure sensor defective
Terminal condition: none
Voltage condition:
- Electrical system voltage > 10 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- none

Condition for fault memory entry
This fault is logged in the control module's fault memory if
it remains present for longer than 0.2 sec.

Action in service
- Check wiring harness
- Replace boost-pressure sensor

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- Reduced power

Driver information
Warning light:
- ECE emissions warning lamp: on
- US emissions warning lamp: on
- ECE electronic engine power reduction: on
- US electronic engine power reduction: on
- CC message: none

Service instruction
- Fault can only be healed after terminal status change.