Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P0111: Intake Air Temperature Sensor Gradient Too High: Procedure
- CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0111)
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
- Read the DTCs.
Result
Result Proceed to DTC P0111 and other DTCs are output A DTC P0111 is output B HINT:
If any DTCs other than P0111 are output, troubleshoot those DTCs first.
B → See step 3
A → See step 2
- GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
- REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to REMOVAL
Use the Manual With the Right Hardware
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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.
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