B1578
2 owner reports and 28 manufacturer filings across 19 model years from Chrysler, Dodge, Ford, Lincoln and others.
Where B1578 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2021 Ford Mustang Mach-E | Electrical System | 4 | — | Battery → |
| 2022 Ford Mustang Mach-E | Equipment | 3 | — | |
| 2025 Chrysler Pacifica | Electrical System | 2 | — | Battery → |
| 2024 Chrysler Pacifica | Electrical System | 2 | — | Battery → |
| 2023 Chrysler Pacifica | Electrical System | 2 | — | Battery → |
| 2022 Chrysler Pacifica | Electrical System | 2 | — | Battery → |
| 2026 Dodge Charger | Electrical System | 2 | — | Battery → |
| 2025 Dodge Charger | Electrical System | 2 | — | Battery → |
| 2025 Chrysler Voyager | Electrical System | 1 | — | Battery → |
| 2024 Chrysler Voyager | Electrical System | 1 | — | Battery → |
| 2023 Chrysler Voyager | Electrical System | 1 | — | Battery → |
| 2022 Chrysler Voyager | Electrical System | 1 | — | Battery → |
| 2024 Dodge Charger | Electrical System | 1 | — | Battery → |
| 2024 Ford Expedition | Not specified | 1 | — | |
| 2024 Ford Mustang Mach-E | Forward Collision Avoidance | — | 1 | |
| 2023 Ford Mustang Mach-E | Not specified | 1 | — | |
| 2024 Lincoln Corsair | Not specified | 1 | — | |
| 2024 Lincoln Navigator | Not specified | 1 | — | |
| 2017 Subaru Legacy/Outback | Electrical System | — | 1 | Battery → |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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B1578 by make
The same record, one make at a time: the model years, bulletins and owner reports that name B1578 on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Visit 1, July 29-August 10, 2026, in at 34,296 miles, repair order 240919: dealer found IPMA camera diagnostic codes B1385:68, B1385:82, and B1578:89, cleaned the camera area, and updated IPMA software under warranty
These are the Subaru code defects from the dealer are B1578, B1401 and B1411
28 manufacturer filings name B1578. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names B1578.
- 9100745 Service bulletin2025-12-15 · Electrical System
- B1578 DTC active (Audio Antenna Circuit Resistance Below Threshold) in LB production vehicles. Do not diagnose stored or active DTC unless there is a customer facing issue noted. A SOL will be released to give further information.
- 9100746 Service bulletin2025-12-15 · Electrical System
- B1578 DTC active (Audio Antenna Circuit Resistance Below Threshold) in LB production vehicles. Do not diagnose stored or active DTC unless there is a customer facing issue noted. A SOL will be released to give further information.
- 9100747 Service bulletin2025-12-15 · Electrical System
- B1578 DTC active (Audio Antenna Circuit Resistance Below Threshold) in LB production vehicles. Do not diagnose stored or active DTC unless there is a customer facing issue noted. A SOL will be released to give further information.
- TSB 25-2398 Service bulletin2025-08-27 · Electrical System
- This article supersedes TSB 23-2021 to update the service procedure and labor times from M-time to AP-time and add a limit. Some of the vehicles listed in the Model statement above equipped with the rear view camera system only may exhibit the "Reverse Brake Assistance Not Available" message and diagnostic trouble code (DTC) B1578:78 stored in the image processing module A (IPMA) that cannot be cl
- SSM 53020 Service bulletin2024-10-05 · Unknown Or Other
- An intermittent black screen in the vehicle center display screen with a "Camera Is Unavailable. Please Contact Your Dealership." message in the instrument panel cluster (IPC) when the vehicle is in reverse and DTC B1578:89 stored in the image processing module A (IPMA) may be present on some of the following Ford and Lincoln vehicles: * 2024 F-150/F-Super Duty built on or before 08-Apr-2024 * 202
- TSB 22-2295 Service bulletin2022-07-22 · Equipment — Other — Owners/Service/Other Manual
- Some 2021-2022 F-150, Mustang Mach-E and 2022 Expedition/Navigator vehicles may exhibit various driver assistance system warning messages or inoperative features and/or diagnostic trouble codes (DTC) U3000:49, U3000:89, U2107:68, C1001:54 and/or C1001:78. DTC B1578:78 may also set after an image processing module A (IPMA) on-demand self test is performed. This may be due to software in the IPMA. T
What B1578 means
Source: SAE J2012 / OBD-IIB1578 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. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about B1578
Source: NHTSA files and the OBD-II standardWhy does this page not define B1578?
Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.
Can I keep driving with B1578 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.