Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P004100“O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 is evident within address 0001 (Engine control unit) and MIL light active after attempting to conduct a readiness test
P004100O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 is evident within address 0001 (Engine control unit) and MIL light active after attempting to conduct a readiness test
P004100O2 sensor signals swapped bank 1 sensor 2/bank 2 sensor 2 is evident within address 0001 engine control unit and MIL light active after attempting to conduct a readiness test
Manufacturer communications
5Original wording in English
BENTLEY
Bentayga V8 Kovomo - Engine MIL light on - DTC “O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2. Customer statement / workshop findings: DTC P004100: “O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 is evident within address 0001 (Engine control unit) and MIL light active after attempting to conduct a readi…
BENTLEY
Bentayga V8 Kovomo - Engine MIL light on - DTC "O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2. Condition: DTC P004100: “O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 is evident within address 0001 (Engine control unit) and MIL light active after attempting to conduct a readiness test
BENTLEY
Bentayga V8 Kovomo - Engine MIL light on - DTC O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 Customer Statement: -DTC P004100: O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 is evident within address 0001 (Engine control unit) and MIL light active after attempting to conduct a readiness test
BENTLEY
Bentayga V8 Kovomo - Engine MIL Light on - DTC (O2 sensor signals swapped bank 1 sensor 2/Bank 2 sensor 2) Customer Statement: -DTC P004100 (O2 sensor signals swapped bank 1 sensor 2/bank 2 sensor 2 is evident within address 0001 engine control unit and MIL light active after attempting to conduct a readiness test)
Check vehicle applicability
10A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Bentley | BENTAYGA ↗ | 2027 |
| Bentley | BENTAYGA ↗ | 2026 |
| Bentley | BENTAYGA ↗ | 2025 |
| Bentley | BENTAYGA ↗ | 2024 |
| Bentley | BENTAYGA ↗ | 2023 |
| Bentley | BENTAYGA ↗ | 2022 |
| Bentley | BENTAYGA ↗ | 2021 |
| Bentley | BENTAYGA ↗ | 2020 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.