Subaru Impreza 2004 Service Manual page 217

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
Check
Is any other DTC displayed?
EN(H4DOTC)(diag)-296
Yes
Inspect the rele- Replace the
vant DTC using exhaust gas tem-
"List of Diagnostic perature sensor.
Trouble Code <Ref. to
(DTC)". <Ref. to FU(H4DOTC)-48,
EN(H4DOTC)(dia Exhaust Tempera-
g)-74, List of Diag- ture Sensor.>
nostic Trouble
Code (DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P1312.
No