B119F on Mazda vehicles
B119F is named on 17 Mazda model years (2019–2023): 48 manufacturer filings and 0 owner reports in NHTSA’s files, across CX-30, Mazda3, CX-5, CX-50, CX-9 and 1 more.
Which Mazda model years name B119F
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2020 Mazda CX-30 | Equipment | 10 | — |
| 2020 Mazda Mazda3 | Equipment | 10 | — |
| 2019 Mazda Mazda3 | Electrical System | 10 | — |
| 2021 Mazda CX-30 | Equipment | 3 | — |
| 2021 Mazda Mazda3 | Equipment | 3 | — |
| 2023 Mazda CX-30 | Electrical System | 1 | — |
| 2023 Mazda CX-5 | Electrical System | 1 | — |
| 2023 Mazda CX-50 | Electrical System | 1 | — |
| 2023 Mazda CX-9 | Electrical System | 1 | — |
| 2023 Mazda Mazda3 | Electrical System | 1 | — |
| 2022 Mazda CX-30 | Electrical System | 1 | — |
| 2022 Mazda CX-5 | Electrical System | 1 | — |
| 2022 Mazda CX-9 | Electrical System | 1 | — |
| 2022 Mazda MX-30 | Electrical System | 1 | — |
| 2022 Mazda Mazda3 | Electrical System | 1 | — |
| 2021 Mazda CX-5 | Electrical System | 1 | — |
| 2021 Mazda CX-9 | Electrical System | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
Mazda filings that name B119F
Source: NHTSA manufacturer communicationsBulletins and campaigns Mazda filed with NHTSA whose summary names B119F. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- SA-029-20 Service bulletin2020-02-25 · Electrical System
- 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 mast
- SA-029-20a Service bulletin2020-04-08 · Electrical System
- 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: ï· B119F:01 TCU - Tel antenna No. 1 malfunction ï· B1252:87 TCU - Communication error with connectivity master unit (CMU) ï· U0156:00 VCM - Communication error with connectivity master unit (CMU) ï· U0156:00 BCM - Communication error with c
- 09-021-20-3714 Service bulletin2020-06-25 · Equipment — Electrical — Navigational System(Global Positioning System)
- Some customers may experience the master warning light and/or the "In-Vehicle Network Malfunction" warning message in the instrument cluster on with DTC B119F:01, B119F:13 and/or B119F:2B stored when the vehicle position cannot be displayed correctly. (TCU - Tel antenna No. 1 malfunction) (TCU - TEL antenna No.1 circuit malfunction) (CMU - GPS antenna signal circuit malfunction). This concern may
- 09-021-20-3714a Service bulletin2020-11-16 · Equipment — Electrical — Antenna
- Some customers may experience the master warning light and/or the "In-Vehicle Network Malfunction" warning message in the instrument cluster on with DTC B119F:01, B119F:13 and/or B119F:2B stored when the vehicle position cannot be displayed correctly. ï· B119F:01 (TCU - Tel antenna No. 1 malfunction) ï· B119F:13 (TCU - TEL antenna No.1 circuit malfunction) ï· B119F:2B (CMU - GPS antenna signal
- 09-021-20-3714b Service bulletin2020-12-10 · Equipment — Electrical — Antenna
- Some customers may experience the master warning light and/or the "In-Vehicle Network Malfunction" warning message in the instrument cluster on with DTC B119F:01, B119F:13 and/or B119F:2B stored when the vehicle position cannot be displayed correctly.
- SA-038-24 Other2024-06-14 · Electrical System
- Some customers may experience the master warning light and/or the "In-Vehicle Network Malfunction" warning message in the instrument cluster on with DTC B119F:01 (TCU - Tel antenna No. 1 malfunction) stored.
What B119F means
Source: SAE J2012 / OBD-IIB119F is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. The record above is what Mazda and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs B119F a known problem on Mazda vehicles?
It is a documented one: NHTSA's files hold 48 manufacturer filings and 0 owner reports naming B119F on 17 Mazda model years (2019–2023). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Mazda models does B119F appear on most?
2020 CX-30 (10 documents), 2020 Mazda3 (10 documents), 2019 Mazda3 (10 documents).
Does B119F on a Mazda mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.