U3000 on the 2019 Mazda Mazda3
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 15-001-25 | 2025-03-04. Service bulletin. Some vehicle may experience the i-ACTIVSENSE/ALH warning lights on and a system error messages may be found in the center display as well. DTC U3000:04 (FSC) is stored in memory • DTC U3000:04 (FSC) - Forward sensing camera (FSC) internal malfunction • This may be caused by a hardware failure in an internal device of the FSC that results in the malfunction detection. To eliminate this concern, the production process of the FSC has been modified. |
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| 16-001-22d | 2022-12-02. Service bulletin. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA01_12004 or later). Ver. 7000C0A-NA01_12004 fixes these software errors (bugs): * Album artwork may not appear when playing music using an USB connected iPhone. * The center display may turn black when the gear is shifted from reverse position to parking position. * Screen freezes and goes to white screen, then the system reboots. * Steering wheel switches and commander switches cannot control the audio system. * DTC U3000:49 is stored which may be accompanied with following symptoms. - No sound comes out from the speakers. - Audio source selection is unavailable. * When using the navigation with head-up mode, the vehicle icon rotates. * Beep sounds every after couple of minutes. * Language setting may not be accepted correctly. * The audio track may not pause when pressing the mute button. * The system reboots. * The screen may turn black when trying to play a video file in the USB connected device. |
| 15-003/22 | 2022-02-04. Service bulletin. Some vehicle may experience the i-ACTIVSENSE/ALH warning lights on and a system error messages may be found in the center display as well. DTC U3000:04 (FSC) is stored in memory DTC U3000:04 (FSC) - Forward sensing camera (FSC) internal malfunction This may be caused by a hardware failure in an internal device of the FSC that results in the malfunction detection. To eliminate this concern, the production process of the FSC has been modified. |
| SA-044-21 | 2021-08-03. Service bulletin. When switching to the maintenance mode, U3000:53 and the related DTCs are stored, but the DTCs will not be cleared automatically after finishing the maintenance mode. It is necessary to clear the DTCs completely after performing the brake system maintenance mode. DTC codes: U3000:53, C0021:52, U0415:68 |
| SA-029-20g | 2020-10-05. Service bulletin. Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored: • B119F:01 TCU - Tel antenna No. 1 malfunction• B119F:13 (TCU - TEL antenna No.1 circuit malfunction)• B119F:2B (CMU - GPS antenna signal circuit malfunction)• B1252:87 TCU - Communication error with connectivity master unit (CMU)• U0156:00 VCM - Communication error with connectivity master unit (CMU)• U0156:00 BCM - Communication error with connectivity master unit (CMU)• U0198:00 BCM - Communication error with emergency call unit• U212D:00 BCM - Communication error with light control module (RH)• U3000:00 TCU - Telematics communication unit internal malfunction• Low Voltage Battery DTCs |
| SA-029-20e | 2020-07-03. Service bulletin. Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored:• B119F:01 TCU - Tel antenna No. 1 malfunction • B119F:13 (TCU - TEL antenna No.1 circuit malfunction) • B119F:2B (CMU - GPS antenna signal circuit malfunction) • B1252:87 TCU - Communication error with connectivity master unit (CMU) • U0156:00 VCM - communication error with connectivity master unit (CMU) • U0156:00 BCM - Communication error with connectivity master unit (CMU) • U0198:00 BCM - Communication error with emergency call unit • U212D:00 BCM - Communication error with light control module (RH) • U3000:00 TCU - Telematics communication unit internal malfunction • Low Voltage Battery DTCs |
| SA-029-20d | 2020-07-03. Service bulletin. Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored:• B119F:01 TCU - Tel antenna No. 1 malfunction • B119F:13 (TCU - TEL antenna No.1 circuit malfunction) • B119F:2B (CMU - GPS antenna signal circuit malfunction) • B1252:87 TCU - Communication error with connectivity master unit (CMU) • U0156:00 VCM - communication error with connectivity master unit (CMU) • U0156:00 BCM - Communication error with connectivity master unit (CMU) • U0198:00 BCM - Communication error with emergency call unit • U212D:00 BCM - Communication error with light control module (RH) • U3000:00 TCU - Telematics communication unit internal malfunction • Low Voltage Battery DTCs |
| SA-0290-20c | 2020-07-03. Service bulletin. Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored: • B119F:01 TCU - Tel antenna No. 1 malfunction • B1252:87 TCU - Communication error with connectivity master unit (CMU) • U0156:00 VCM - communication error with connectivity master unit (CMU) • U0156:00 BCM - Communication error with connectivity master unit (CMU) • U0198:00 BCM - Communication error with emergency call unit • U212D:00 BCM - Communication error with light control module (RH) • U3000:00 TCU - Telematics communication unit internal malfunction • Low Voltage Battery DTCs |
| SA-029-20a | 2020-05-05. Service bulletin. Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored: • B119F:01 TCU - Tel antenna No. 1 malfunction • B1252:87 TCU - Communication error with connectivity master unit (CMU) • U0156:00 VCM - Communication error with connectivity master unit (CMU) • U0156:00 BCM - Communication error with connectivity master unit (CMU) • U0198:00 BCM - Communication error with emergency call unit • U212D:00 BCM - Communication error with light control module (RH) • U3000:00 TCU - Telematics communication unit internal malfunction • Low Battery DTCs |
| SA-029-20 | 2020-02-27. Service bulletin. Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored: B119F:01 TCU - Tel antenna No. 1 malfunction B1252:87 TCU - Communication error with connectivity master unit (CMU) U0156:00 VCM - Communication error with connectivity master unit (CMU) U0156:00 BCM - Communication error with connectivity master unit (CMU) U0198:00 BCM - Communication error with emergency call unit U212D:00 BCM - Communication error with light control module (RH) U3000:00 TCU - Telematics communication unit internal malfunction |
11 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.