DTC Detection Logic
WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION TABLE
| DTC No. (On board display) |
Trouble diagnosis name |
DTC detecting condition |
Possible cause |
| C1A21 (21) |
UNIT HIGH TEMP |
If temperature sensor (built in ICC sensor integrated unit) detects a high temperature. |
Temperature around ICC sensor integrated unit is excessively high |