Code No. P1238: Air Flow Sensor Trustful For Torque Monitoring




FUNCTION




TROUBLE JUDGMENT


Check Conditions
Judgement Criterion
Check Conditions
Judgement Criterion

FAIL-SAFE AND BACKUP FUNCTION




PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III diagnosis code


Q. Is any other diagnosis code than P1238 set?

Inspection chart for diagnosis code (Refer to ).
Go to Step 2.

STEP 2. M.U.T.-III data list



  • Refer to Data List Reference Table .

  1. Item 10: Air flow sensor

Q. Is the check result normal?

Replace the engine-ECU.
Check air flow sensor system. Check code No. P0102: air flow sensor circuit low input (Refer to ). Check code No. P0103: air flow sensor circuit high input (Refer to ).