Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2025COROLLA CROSS XLE, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONDTC INDEXDTC INDEX (4 OF 4)SUPPLEMENTAL RESTRAINT SYSTEMS DTCSOCCUPANT CLASSIFICATION SYSTEM
2025 Toyota Corolla Cross XLE, FWD
Occupant Classification System
2025 Toyota Corolla Cross XLE, FWDSECTION Occupant Classification System
OCCUPANT CLASSIFICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [09/2021 - 11/2022]
| DTC Code | Description |
|---|---|
| B00C0-28 | Passenger Seat Occupant Classification Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure |
| B00C0-86 | Passenger Seat Occupant Classification Sensor "A" Signal (some circuit quantity, reported via serial data) Invalid |
| B00C0-87 | Passenger Seat Occupant Classification Sensor "A" Missing Message |
| B00C0-96 | Passenger Seat Occupant Classification Sensor "A" Component Internal Failure |
| B00C2-28 | Passenger Seat Occupant Classification Sensor "C" Signal Bias Level Out of Range / Zero Adjustment Failure |
| B00C2-86 | Passenger Seat Occupant Classification Sensor "C" Signal (some circuit quantity, reported via serial data) Invalid |
| B00C2-87 | Passenger Seat Occupant Classification Sensor "C" Missing Message |
| B00C2-96 | Passenger Seat Occupant Classification Sensor "C" Component Internal Failure |
| B1793-12 | Load Sensor for Occupant Detection System Circuit Short to Battery |
| B1793-16 | Load Sensor for Occupant Detection System Circuit Voltage Below Threshold |
| B1793-17 | Load Sensor for Occupant Detection System Circuit Voltage Above Threshold |
OCCUPANT CLASSIFICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [11/2022 - 12/2024]
| DTC Code | Description |
|---|---|
| B00C0-28 | Passenger Seat Occupant Classification Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure |
| B00C0-86 | Passenger Seat Occupant Classification Sensor "A" Signal (some circuit quantity, reported via serial data) Invalid |
| B00C0-87 | Passenger Seat Occupant Classification Sensor "A" Missing Message |
| B00C0-96 | Passenger Seat Occupant Classification Sensor "A" Component Internal Failure |
| B00C2-28 | Passenger Seat Occupant Classification Sensor "C" Signal Bias Level Out of Range / Zero Adjustment Failure |
| B00C2-86 | Passenger Seat Occupant Classification Sensor "C" Signal (some circuit quantity, reported via serial data) Invalid |
| B00C2-87 | Passenger Seat Occupant Classification Sensor "C" Missing Message |
| B00C2-96 | Passenger Seat Occupant Classification Sensor "C" Component Internal Failure |
| B1793-12 | Load Sensor for Occupant Detection System Circuit Short to Battery |
| B1793-16 | Load Sensor for Occupant Detection System Circuit Voltage Below Threshold |
| B1793-17 | Load Sensor for Occupant Detection System Circuit Voltage Above Threshold |
OCCUPANT CLASSIFICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [12/2024 - ]
| DTC Code | Description |
|---|---|
| B00C0-28 | Passenger Seat Occupant Classification Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure |
| B00C0-86 | Passenger Seat Occupant Classification Sensor "A" Signal (some circuit quantity, reported via serial data) Invalid |
| B00C0-87 | Passenger Seat Occupant Classification Sensor "A" Missing Message |
| B00C0-96 | Passenger Seat Occupant Classification Sensor "A" Component Internal Failure |
| B00C2-28 | Passenger Seat Occupant Classification Sensor "C" Signal Bias Level Out of Range / Zero Adjustment Failure |
| B00C2-86 | Passenger Seat Occupant Classification Sensor "C" Signal (some circuit quantity, reported via serial data) Invalid |
| B00C2-87 | Passenger Seat Occupant Classification Sensor "C" Missing Message |
| B00C2-96 | Passenger Seat Occupant Classification Sensor "C" Component Internal Failure |
| B1793-12 | Load Sensor for Occupant Detection System Circuit Short to Battery |
| B1793-16 | Load Sensor for Occupant Detection System Circuit Voltage Below Threshold |
| B1793-17 | Load Sensor for Occupant Detection System Circuit Voltage Above Threshold |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.