P1B77 on Genesis vehicles
P1B77 is named on 6 Genesis model years (2023–2024): 6 manufacturer filings and 0 owner reports in NHTSA’s files, across GV60, GV70, GV80.
Which Genesis model years name P1B77
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2024 Genesis GV60 | Electrical System | 1 | — |
| 2024 Genesis GV70 | Electrical System | 1 | — |
| 2024 Genesis GV80 | Electrical System | 1 | — |
| 2023 Genesis GV60 | Electrical System | 1 | — |
| 2023 Genesis GV70 | Electrical System | 1 | — |
| 2023 Genesis GV80 | 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.
Genesis filings that name P1B77
Source: NHTSA manufacturer communicationsBulletins and campaigns Genesis filed with NHTSA whose summary names P1B77. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 24-EV-004G Service bulletin2024-07-12 · Electrical System
- This bulletin provides important special service instructions to properly repair a vehicle that has been diagnosed to require an Integrated Charge Control Unit (ICCU) replacement, such as required for DTC P1A9096 DC to DC related charging concern or for inoperative AC charging. • The ICCU fuse accessible from a rear side panel of the EV Battery, should NEVER be replaced by itself prior to receivin
What P1B77 means
Source: SAE J2012 / OBD-IIP1B77 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 Genesis 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 P1B77 a known problem on Genesis vehicles?
It is a documented one: NHTSA's files hold 6 manufacturer filings and 0 owner reports naming P1B77 on 6 Genesis model years (2023–2024). 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 Genesis models does P1B77 appear on most?
2024 GV60 (1 document), 2023 GV60 (1 document), 2024 GV70 (1 document).
Does P1B77 on a Genesis 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.