Fault Code Lookup › Body codes › B1578
B1578 Body · manufacturer code
B1578 fault code: what 4 owners reported
B1578 is a manufacturer-specific body code (body: airbags, seats, lighting, climate and comfort electronics), so its exact definition belongs to the carmaker and is not in the generic OBD-II list. What it meant in practice is below, from 4 complaints owners filed with NHTSA. Updated November 3, 2026.
- 4owner reports
- 3car models
- 0mention a crash
- 0mention a fire
- 2014–2024model years
Which cars get code B1578?
Every model whose owners mentioned B1578 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.
Where does B1578 show up?
By brand
- Ford3
- Dodge1
Component the owner filed it under
Is there a recall for B1578?
As of November 3, 2026, no NHTSA recall on the cars reporting B1578 names this code or its most-reported component. Recalls can be issued at any time: check your VIN at nhtsa.gov/recalls.
What happened when owners saw B1578?
4 of the 4 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
My 2024 Ford F-150 Raptor V6, a brand-new vehicle purchased on [XXX], has accumulated 767 miles. On the evening of [XXX] in Orange County, California, while driving on the freeway at approximately 75 miles per hour, I experienced an unexpected issue. Everything appeared normal, and there were no warning lights on the instrument cluster indicating any problems with the truck. However, a few miles before exiting the freeway, I received a message through the Ford Pass App, accompanied by a warning on the instrument cluster that read, “Drivetrain malfunction, reduced power.” Despite the warning, I continued driving cautiously until I reached my home. Upon pulling into my driveway, I scanned my…
Last Thursday, August 3rd, I reversed my car out of my garage. Upon putting it in Drive, the engine light came on as well as the PRND lights illuminated red. As I was driving, I noticed my car felt sluggish to my destination, but I did make it. When I parked, I noticed how jerky the car was when shifting from drive to park. After my appointment, the red PRND lights were gone, with the engine light still on. I had another appointment to get new tires, and the car ran fine this time, except engine light still on. Once my new tires were on, engine light also no longer lit. I took my car to get it diagnosed. It gave out 3 codes; po705-00, p1c86-92, and B1578-2B with the last code indicating…
Our 2024 Ford Mustang Mach-E repeatedly displays "Pre-Collision Assist Not Available," meaning forward collision warning and automatic emergency braking assistance are unavailable. The Ford app recorded 26 occurrences from April 19, 2026 at 8:52 p.m. through October 11, 2026 at 1:51 p.m. No crash, fire, injury, or death occurred. The vehicle was purchased new on November 5, 2024 and is titled to my spouse; I am reporting as spouse, operator, and case coordinator. Performance Ford in West Covina has had three repair visits for this concern. 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…
New 2022 Ford F-150 vehicle has a "Rear Brake Assist Not Available" dash warning with accompanting DTCs B1578:78, IPMA Error, and U023A, Lost Communication with Image Processing Module A. I should note my Check Engine Light never came on for either of these DTCs - I was given these codes by the dealer when I took vehicle in for service concerning the aforementioned dash warning. After having the vehicle for 10 days in May 2022, the dealer replaced the rear camera (ML3Z-19G490-C), control assembly (ML3Z-14G647-R), and performed an IPMA calibration and a 360° camera calibration. Work order indicates hard fault did not clear and after multiple calibration attempts, it finally completed and…
B1578: questions drivers ask
What does code B1578 mean?
B1578 is a manufacturer-specific body code (body: airbags, seats, lighting, climate and comfort electronics), so its exact definition depends on the carmaker and is not in the generic OBD-II list. 4 owners reported it to NHTSA, most often for the Ford F-150 (2), Dodge Dart (1), Ford Mustang Mach-E (1); their reports describe what happened.
Which cars get code B1578 most often?
In NHTSA owner complaints, B1578 is mentioned most for the Ford F-150 (2), Dodge Dart (1), Ford Mustang Mach-E (1), across 3 models and model years 2014 to 2024. Popular models collect more reports because more of them are on the road.
Is there a recall for code B1578?
As of November 2026, no NHTSA recall on the cars reporting B1578 names this code or its most-reported component. Recalls can be issued at any time, so check your VIN at nhtsa.gov/recalls.
What should I do if my car shows B1578?
Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.
How this page was made
CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of B1578. Manufacturer codes have no public standard definition, so CarHooq shows only what owners reported. Nothing here is a diagnosis. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 3, 2026. How CarHooq reports are made.
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