DTC P0068: Map/MAF - Throttle Position Correlation: Notes

WARNING: This page is about a different variant/trim than selected.

1. -

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DO 2.5)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

CHECK AIR INTAKE SYSTEM .
Check the installing condition of the air intake system.

Are there holes, loose bolts or disconnection of hose on air intake system?

Yes: Repair the air intake system.

No: Go to 2.
CHECK MANIFOLD ABSOLUTE PRESSURE SENSOR .
1. Start the engine and warm up until the engine coolant temperature exceeds 75°C (167°F).
2. Place the select lever in "P" range or "N" range.
3. Turn the A/C switch to OFF.
4. Turn all the accessory switches to OFF.
5. Using the Subaru Select Monitor, read the value in [Mani. Absolute Pressure].
NOTE: For detailed operation procedures, refer to "Common (Diagnostics)". Ref. to COMMON (DIAG)>DATA MONITOR .

Is the value of [Mani. Absolute Pressure] 73.3 - 106.6 kPa (550 - 800 mmHg, 21.6 - 31.5 inHg, 10.6 - 15.5 psi) at ignition ON, and 20 - 46.7 kPa (150 - 350 mmHg, 5.91 - 13.79 inHg, 2.9 - 6.8 psi) at idling?

Yes: Repair the poor contact of ECM connector.

No: Replace the manifold absolute pressure sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO (EXCEPT FOR HEV))>MANIFOLD ABSOLUTE PRESSURE SENSOR .