Subaru 2009 IMPREZA Service Manual page 745

Diagnostic Trouble Code (DTC) Detecting Criteria
H: DTC P0068 MAP/MAF - THROTTLE POSITION CORRELATION
1. OUTLINE OF DIAGNOSIS
Detect problems in the intake manifold pressure sensor output properties.
Judge as NG when the intake air pressure AD value is Low whereas it seemed to be High from the viewpoint
of engine condition, or when it is High whereas it seemed to be Low from the engine condition.
2. COMPONENT DESCRIPTION
(A) Output voltage
(1) Connector
3. ENABLE CONDITION
Secondary Parameters
Engine coolant temperature
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after idling.
(1)
(3)
(B) Absolute pressure
(2) Terminals
Enable Condition
75 °C (167 °F)
GD(H4SO)-21
(2)
(A)
(3) O-ring
GENERAL DESCRIPTION
(B)
EN-01765