Diagnosis code 21, 22: Air thermo sensor system
COMMENTS ON TROUBLE SYMPTOM
This code is set when the air thermo sensor circuit is open (Code No.21) or is short (Code No.22).
POSSIBLE CAUSES
  • Malfunction of the air thermo sensor
  • Damaged the wiring harness or connectors
  • Malfunction of the automatic air conditioner control panel (A/C-ECU)
DIAGNOSIS
Step 1. Check the air thermo sensor
Refer to
.
Q: Is the check result normal?
YES:  Go to Step 2.
NO:  Replace the air thermo sensor
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