Foreign Object Detection Error on Head Unit Foreign object detection (FOD) message may display due to 2 reasons: 1. If any metallic object is present between phone and charger. 2. If smaller phones are kept in corner mat which poor charging zone. Whenever FOD message is detected user shall rectify issue and keep phone in center of the mat area Check – T4 Following could be the reasons when message displaying “charging may be interrupted due to error” is displayed on the Head unit as shown. 1. When permanent failure of charger driver failure detected e.g. short circuit or open circuit. 2. When permanent Coil failure detected. 3. When permanent temperature sensor failure is detected. 4. Permanent memory failure detected. 5. When any other permanent component failure which lead to permanent failure in charger functionality. 6. Fan output short circuit or open circuit is detected. In case of above faults, there could be a WPC internal system fault and would need a WPC ECU replacement. “Error” message displayed on Head Unit Low Voltage Electrical System (LV) 210
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