Confirmed on real Ocean cars. B20FE16 means: Trailer module supply voltage below threshold (trailer lamps may not light fully).
How B20FE16 is built
| Part | Here | Means |
|---|---|---|
| System letter | B | Body |
| Base code | 20FE | What part or signal it is about |
| Failure type | 16 | Usually: voltage below threshold |
Some scan tools show only the first five characters (B20FE) or put a dash before the failure type (B20FE-16). More on how codes are built.
Module it names
The meaning names a module Ocean Live scans: TRM (Trailer module).
What to do
Clearing codes does not fix anything. It only resets the records; if the cause remains the code returns. Airbag (ACU), brake (ESP, IBOOSTER), steering (EPS) and high-voltage (BMS, PDU, PIU, MCU) faults should go to a qualified shop.
- Scan in Ocean Live: Faults→Scan all modules. Tap the code for what it affects, possible causes and how it's fixed, when known.
- Tap Share report before clearing anything, to keep the history a workshop would use.
- Not sure? Tap the round ? and ask "Any questions?".
The states the app shows: active (the fault is present now), pending, stored (happened before), warning lamp (the module asked for a warning light).