DTC P0101: Mass Air Flow Circuit Range / Performance Problem: Procedure

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0101)

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Select the following menu items: Powertrain / Engine / Trouble Codes.

Read DTCs.

Result

Display (DTC Output)	Proceed to
P0101	A
P0101 and other DTCs	B

HINT:

If any DTCs other than P0101 are output, troubleshoot those DTCs first.

B → GO TO DTC CHART

A: Go to next step

CHECK AIR INDUCTION SYSTEM
1. Check the air induction system for vacuum leakage.
  OK
  
  No leakage from air induction system.
NG → REPAIR OR REPLACE AIR INDUCTION SYSTEM

OK: Go to next step
CHECK PCV HOSE CONNECTIONS
OK

PCV hose is connected correctly and is not damaged.

NG → REPAIR OR REPLACE PCV HOSE

OK → REPLACE MASS AIR FLOW METER