Subaru Legacy 2004 Service Manual page 973

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BQ:DTC P1110 ATMOSPHERIC PRESSURE SENSOR CIRCUIT MALFUNCTION
(LOW INPUT)
DTC DETECTING CONDITION:
Immediately at fault recognition.
TROUBLE SYMPTOM:
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
41, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-34, Inspection Mode.>.
Step
1 CHECK OPTION CODE.
2 CHECK ANY OTHER DTC ON DISPLAY.
Check
Is the option code EC, EK or
K4?
Is any other DTC displayed?
EN(H4SO 2.5)(diag)-214
Yes
Go to step 2. Refer to EN(H4SO
2.0) section. <Ref.
to EN(H4SO
2.0)(diag)-66, List
of Diagnostic Trou-
ble Code (DTC).>
NOTE:
Fuel injection sys-
tem for KA and KS
model is the same
as 2.0 L model.
Inspect the DTC Replace the ECM.
using "List of Diag- <Ref. to FU(H4SO
nostic Trouble 2.5)-36, Engine
Code (DTC)". Control Module
<Ref. to EN(H4SO (ECM).>
2.5)(diag)-70, List
of Diagnostic Trou-
ble Code (DTC).>
NOTE:
It is not necessary
to inspect DTC
P1110.
No