DTC U0231: 68 Communication Error With Auto-Light Sensor/Rain Sensor: Notes
DTC U0231:68 (FRONT BODY CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Communication error with auto-light sensor/rain sensor |
| Detection condition |
- The front body control module (FBCM) could not receive signals from the auto-light sensor/rain sensor for 5 s or more
with the ignition switched ON (engine off or on).
|
| Fail-safe |
- |
| Possible cause |
- Auto-light sensor/rain sensor connector or terminal malfunction
- Front body control module (FBCM) connector or terminal malfunction
- Short to ground in wiring harness between auto-light sensor/rain sensor terminal A and front body control module (FBCM) terminal 2G
- Short to power supply in wiring harness between auto-light sensor/rain sensor terminal A and front body control module (FBCM) terminal 2G
- Open circuit in wiring harness between auto-light sensor/rain sensor terminal A and front body control module (FBCM) terminal 2G
- Auto-light sensor/rain sensor malfunction
- Front body control module (FBCM) malfunction
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 Courtesy of MAZDA MOTORS CORP.
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