Subaru 2002 IMPREZA Service Manual page 1459

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
1 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODE (DTC) ON DISPLAY.
Check
Is any other DTC displayed?
EN(TURBO)-299
ENGINE (DIAGNOSTICS)
Yes
Inspect the rele- Replace the mass
vant DTC using air flow and intake
"Diagnostics Chart air temperature
with Trouble sensor.
Code" <Ref. to
EN(TURBO)-75,
List of Diagnostic
Trouble Code
(DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P1141.
No