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

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

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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 (HEV))>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

Courtesy of SUBARU OF AMERICA, INC.

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. Turn the ignition switch to ON.
2. Navigate to Inspection Mode for measuring Exhaust Gas. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>WORK SUPPORT>OPERATION>SERVICE MODE .
  NOTE: If it is necessary to run the engine for 10 minutes or more, fasten the driver's seat belt.
3. Start the engine.
4. Warm up the engine until coolant temperature is higher than 75°C (167°F).
5. Place the select lever in "P" range or "N" range.
6. Turn the A/C switch to OFF.
7. Turn all the accessory switches to OFF.
8. 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 (HEV))>MANIFOLD ABSOLUTE PRESSURE SENSOR .