B0270
Passenger Door Lock Switch Circuit
Passenger Door Lock Switch Circuit: an electrical fault is present in the circuit. This affects central locking operated from this switch.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
Ordered by how often each turns out to be the cause.
- Lock switch failedCommon
- Door harness broken in hinge areaPossible
Parts involved
- Door Lock Switch
- Body Control Module
- Door Harness
B0270 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.