Severity: 🔴 Severe | System: Thermal Management | Source: A/C System
DTC Meaning
B1109: PM2.5 Sensor Open Circuit
Possible Fault Areas
- PM2.5 Sensor
What to Do When This Code Appears?
This is a severe fault code. It is recommended to immediately contact a BYD authorized service center for professional repair. Avoid continued driving until the fault is resolved.
Applicable Models
- BYD Song MAX 2017
- BYD Song MAX 2018
- BYD Song MAX 2019
Related Warning Lights
- High Coolant Temperature Warning Light (Thermal Management)
- Motor Overheating Warning Light (Thermal Management)
- Motor Coolant Overtemperature Warning Light (Thermal Management)
Technical Information
| Item | Content |
|---|---|
| DTC Code | B1109 |
| Fault Description | PM2.5 Sensor Open Circuit |
| System | Thermal Management System |
| Source System | A/C |
| Severity Level | Level 3 (Severe) |
| Applicable Models | Song |
| Data Source | BYD Service Manual |
Frequently Asked Questions
What does BYD fault code B1109 mean? Fault code B1109 indicates: PM2.5 Sensor Open Circuit. This code originates from the BYD service manual's A/C system fault code table.
Can I continue driving when BYD fault code B1109 appears? Immediate repair is recommended. Contact a BYD authorized service center immediately for professional repair and avoid driving until the issue is resolved.
Which models does BYD fault code B1109 apply to? This fault code applies to BYD Song MAX 2017, Song MAX 2018, and Song MAX 2019. Data sourced from BYD service manual.