DTC U210A-86: Error Signal Received From Humidity Sensor [Dash-Electrical Supply Unit]: Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC U210A:86 [DASH-ELECTRICAL SUPPLY UNIT] DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Error signal received from humidity sensor |
| Detection condition |
- The dash-electrical supply unit detects a windshield temperature signal error received from the humidity sensor.
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| Fail-safe |
- Fixes the windshield temperature input value at -40°C {-40°F} and performs control.
- Performs control as a vehicle without the humidity sensor.
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| Possible cause |
- DTCs are stored in the body control module (BCM)
- Humidity sensor connector or terminal malfunction
- Body control module (BCM) connector or terminal malfunction
- Short to ground in humidity sensor LIN communication line
- Short to power supply in humidity sensor LIN communication line
- Open circuit in humidity sensor LIN communication line
- Humidity sensor malfunction
- Body control module (BCM) malfunction
- Dash-electrical supply unit malfunction
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 Courtesy of MAZDA MOTORS CORP.
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