HINT:

Read freeze frame data using Techstream. The ECM (included in the hybrid vehicle control ECU) records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

Connect Techstream to the DLC3.
Turn the power switch on (IG).
Turn the tester on.
Select the following menu items: Powertrain / Engine / Trouble Code.
Read the DTCs.

Result

RESULT CHART

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 leaks.
  OK:
  
  No leaks in air induction system.
NG: REPAIR OR REPLACE AIR INDUCTION SYSTEM

OK: Go to next step
CHECK PCV HOSE (HOSE CONNECTION)
OK:

PCV hose is connected correctly and is not damaged.

NG: REPAIR OR REPLACE PCV HOSE

OK: REPLACE MASS AIR FLOW METER

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Inspection Procedure

Use the Manual With the Right Hardware

When to See a Mechanic

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