Honda Accord Hybrid 2023–2025 — technical service bulletin
Bulletin A25-044 · NHTSA communication 11020826 · issued Jul 8, 2025
Technical service bulletin
communication type
Engine
component
2023–2025
model years
6
vehicle entries
Official summary
Service Bulletin - The engine runs rough and makes a rattling noise, accompanied by DTC P0134 or P0135 due to a possible fuel injector leak causing a rich air/fuel (A/F) mixture that fouls the spark plug(s) and causing the PCM to misread the A/F sensor heater resistance. Other DTCs may also include: P0700, P0300, P219C, P219D, P219E, P219F, P0172.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.