DTC P0068: MAP/MAF - Throttle Position Correlation [11/2021 - ]: Procedure

1. Check the installing condition of the air intake system.

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

   Result	Proceed to
   Yes (Repair the air intake system.)	A
   No	B

Result: 

A 

REPAIR AIR INTAKE SYSTEM. Refer to  ON-VEHICLE INSPECTION [11/2021 - ] 

Result: 

B 

See step  2

1. Start the engine and warm up until the engine coolant temperature exceeds 75°C (167°F).
2. For AT models, set the select lever to "P" range or "N" range, and for MT models, place the shift lever in the neutral position.
3. Turn the A/C switch to OFF.
4. Turn all the accessory switches to OFF.
5. Using GTS, read the value in [Mani. Absolute Pressure].

   Powertrain > Engine Control System > Data List 

   Tester Display
   Mani. Absolute Pressure

   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?

   Result	Proceed to
   Yes (Repair the poor contact of ECM connector.)	A
   No (Replace the manifold absolute pressure sensor.)	B

Result: 

A 

REPAIR CONNECTOR 

Result: 

B 

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR. Refer to  REMOVAL [11/2021 - ]