BYD P1BC100
Front drive motor resolver/rotary transformer signal amplitude low
Quick answer
P1BC100 on a BYD ATTO 3 indicates: Front drive motor resolver/rotary transformer signal amplitude low.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does P1BC100 mean?
P1BC100 on a BYD ATTO 3 indicates: Front drive motor resolver/rotary transformer signal amplitude low.
2. Technical explanation
Verified evidence identifies P1BC100 as a low-amplitude signal condition involving the front drive motor resolver/rotary transformer. The supplied evidence does not establish diagnostic thresholds, operating conditions, root cause, or the vehicle response to this DTC.
3. What system is affected?
Drive motor — front drive motor resolver/rotary transformer signal circuit.
4. How serious is this code?
Unknown. Severity is not established by the verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. Whether the vehicle can be driven with P1BC100 is not established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether the vehicle can be charged with P1BC100 is not established by verified evidence.
9. What you can safely do
- Arrange diagnosis by a qualified BYD service provider or appropriately trained EV technician.
- Do not attempt high-voltage component or drive-motor repair without the manufacturer’s approved procedures and training.
10. Step-by-step troubleshooting
- Use manufacturer-approved diagnostic equipment and procedures to evaluate P1BC100. Specific test steps are not established by the verified evidence.
- Record any additional diagnostic trouble codes. Their interpretation and relationship to P1BC100 are not established by the verified evidence.
11. When to contact service
Service requirement is unknown in the supplied diagnostic record. Because this code concerns the front drive motor resolver/rotary transformer signal, professional EV diagnosis is appropriate.
12. What the service center may check
- Not yet established by verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- BYD ATTO 3 · 2022–2026 · GLOBAL
15. Related TSBs / service bulletins
- Not yet established by verified evidence.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified source: OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” locator: ATTO 3 | ATTO 3 / Yuan Plus (SC2E) | P1BC100. The supplied evidence applies to BYD ATTO 3 model years 2022–2026 in the GLOBAL region.
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code P1BC100 mean?
It means “Front drive motor resolver/rotary transformer signal amplitude low.”
Which vehicle is supported by the supplied evidence?
BYD ATTO 3, model years 2022 through 2026, GLOBAL region.
Can I drive with P1BC100?
Not yet established by verified evidence.
What repair fixes P1BC100?
Not yet established by verified evidence.