Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 218
EN(H4DOTC)(diag)-96
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
20.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC P0011 INTAKE CAMSHAFT POSITION - TIMING OVER-ADVANCED OR
SYSTEM PERFORMANCE (BANK 1)
DTC DETECTING CONDITION:
• Detected when two consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-13, DTC P0011 INTAKE CAMSHAFT POSITION -
TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1), Diagnostic Trouble Code (DTC) De-
TROUBLE SYMPTOM:
• Engine stalls.
• Improper idling
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-63,
OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-49, PROCE-
Step
Check
Yes
No
1
CHECK CURRENT DATA.
1) Start the engine and let it idle.
2) Read the value of «VVT Adv. Ang. Amount
R» using the Subaru Select Monitor.
NOTE:
Is the value of «VVT Adv. Ang.
Amount R» approx. 0 deg?
Check the follow-
ing item and repair
or replace if neces-
sary.
• Oil pipe (clog)
• Oil flow control
solenoid valve
(clog or dirt of oil
routing, setting of
spring)
• Intake camshaft
(dirt, damage of
camshaft)
2
CHECK CURRENT DATA.
1) Drive with acceleration and deceleration at
80 km/h (50 MPH) or less.
NOTE:
Drive to an extent that the duty output of oil flow
control solenoid valve increases.
2) Read the values of «OCV Duty R» and
«VVT Adv. Ang. Amount R» using the Subaru
Select Monitor.
NOTE:
When the value of «OCV Duty
R» increases more than 10%,
is the value of «VVT Adv. Ang.
Amount R» approx. 0 deg?
Check the follow-
ing item and repair
or replace if neces-
sary.
• Oil pipe (clog)
• Oil flow control
solenoid valve
(clog or dirt of oil
routing, setting of
spring)
• Intake camshaft
(dirt, damage of
camshaft)
Perform the follow-
ing procedures,
and clean the oil
routing.
Replace the
engine oil and idle
the engine for 5
minutes, and then
replace the oil filter
and engine oil.
<Ref. to LU(STI)-
11, REPLACE-
MENT, Engine
Oil.> <Ref. to
LU(STI)-31,
Engine Oil Filter.>