DTC B164B-00 indicates: front passenger seat belt pretensioner short to ground.
What It Means
DTC B164B-00 indicates: front passenger seat belt pretensioner short to ground. This code is set by the Safety System control module when it detects the condition above. It typically points to an electrical, wiring, or component-level fault rather than a software-only glitch. Technicians should read the freeze-frame data and check the related circuits, connectors, and module supply before replacing parts.
What To Do
Stop the vehicle as soon as it is safe to do so and contact an authorized service center immediately. Do not continue driving — this fault may affect safety-critical functions such as braking, restraint, or high-voltage isolation.
FAQ
What does DTC B164B-00 mean?
DTC B164B-00 indicates: front passenger seat belt pretensioner short to ground. It is logged by the Safety System control module and should be diagnosed before further driving or repair.
Can I keep driving with DTC B164B-00?
Stop the vehicle as soon as it is safe to do so and contact an authorized service center immediately. Do not continue driving — this fault may affect safety-critical functions such as braking, restraint, or high-voltage isolation.
Which models does DTC B164B-00 apply to?
This code applies to the following BYD models: Qin. Always confirm the exact configuration against the vehicle VIN and production year.
Technical Info
| Field | Value |
|---|---|
| Code | B164B-00 |
| Description | front passenger seat belt pretensioner short to ground |
| System | Safety System |
| Source System | SRS |
| Severity | Level 3 — Critical |
| Applicable Models | Qin |
Source: adapted from the dianchema.com BYD fault-code knowledge base. Disclaimer: This material is provided for professional technician reference only. Always follow the official BYD service manual for your specific vehicle. evrepairbase.com is not affiliated with BYD Auto.