Subaru Legacy 2003 Service Manual page 535

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DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
R: DTC P0129 — BAROMETRIC PRESSURE TOO LOW —
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode<Ref. to EN(H4SO)-47, OPER-
ATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)-40, OPERATION, Inspection
Mode.> .
1
CHECK ANY OTHER DTC ON DISPLAY.
Does the Subaru Select Monitor or OBD-II
general scan tool indicate DTC P0129?
Step
EN(H4SO)-138
Value
DTC P0129 indicated.
Yes
Replace ECM.
It is not necessary
<Ref. to
to inspect DTC
FU(H4SO)-45,
P0129.
Engine Control
Module.>
NOTE:
Atmospheric pres-
sure sensor is built
into ECM.
No

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