DTC P0068 Map/MAF - Throttle Position Correlation: DTC Detecting Condition

Detected when two consecutive driving cycles with fault occur.
GENERAL DESCRIPTION Refer to DTC P0068 MAP/MAF - THROTTLE POSITION CORRELATION , Diagnostic Trouble Code (DTC) Detecting Criteria.

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Refer to OPERATION , Clear Memory Mode, and Inspection Mode Refer to PROCEDURE , Inspection Mode.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK AIR INTAKE SYSTEM.	Are there holes, loose bolts or disconnection of hose on air intake system?	Repair the air intake system.	Go to step 2 .
2 CHECK MANIFOLD ABSOLUTE PRESSURE SENSOR. Start the engine and warm up engine until coolant temperature is higher than 75°C (167°F). Place the select lever in "P" range or "N" range. Turn the A/C switch to OFF. Turn all the accessory switches to OFF. Read the value of «Mani. Absolute Pressure » using the Subaru Select Monitor or a general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Refer to SUBARU SELECT MONITOR . > General scan tool For detailed operation procedures, refer to the "General Scan Tool Instruction Manual".	Is the value in «Mani. Absolute Pressure» 73.3 - 106.6 kPa (550 - 800 mmHg, 21.65 - 31.50 inHg) when the ignition is turned ON, and 20.0 - 46.7 kPa (150 - 350 mmHg, 5.91 - 13.78 inHg) during idling?	Go to step 3 .	Replace the manifold absolute pressure sensor. Refer to MANIFOLD ABSOLUTE PRESSURE SENSOR . >
3 CHECK THROTTLE OPENING ANGLE. Using the Subaru Select Monitor or a general scan tool, read the value in «Throttle Opening Angle». NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Refer to SUBARU SELECT MONITOR . > General scan tool For detailed operation procedures, refer to the "General Scan Tool Instruction Manual".	Is the value in «Throttle Opening Angle» with the throttle fully closed less than 5%?	Go to step 4 .	Replace the electronic throttle control. Refer to THROTTLE BODY . >
4 CHECK THROTTLE OPENING ANGLE.	Is the value in «Throttle Opening Angle» with the throttle fully open 85% or more?	Replace the manifold absolute pressure sensor. Refer to MANIFOLD ABSOLUTE PRESSURE SENSOR . >	Replace the electronic throttle control. Refer to THROTTLE BODY . >