Category Archives: Trouble Codes

Fault Code Failsafe Behavior Chart

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P0A0C – Highest Cell Voltage Too High Fault

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P0A0E – Lowest Cell Voltage Too Low Fault

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P0A10 – Pack Too Hot Fault

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P0A0F – Cell ASIC Fault

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P0ACA – Charge Interlock Fault

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P0A0D – Cell Voltage Over 5 Volts

The cell tap harness should be immediately disconnected from the BMS if this fault code is set. Leaving the harness connected to the BMS is likely to cause damage to the BMS and may indicate that a cell is severely … Continue reading

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P0A04 – Open Wiring Fault (or “Open Cell Voltage Fault”)

This fault is a serious code that effectively disables the BMS and often causes many other fault codes to occur. When diagnosing errors, this error code should be corrected first. This error code indicates that the Orion BMS has determined … Continue reading

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P0A03 – Pack Voltage Mismatch Error

This error code indicates that the voltage measured by the total pack voltage sensor did not match the sum of the individual cell voltage measurements. This error is triggered when the difference in voltage between the two measurements exceeds the … Continue reading

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P0A80 – Weak Cell Fault

This fault is triggered based on thresholds programmed into the BMS profile that indicate when a cell is “weak”. While this error code is designed to indicate a cell is weak, this error is triggered when certain pre-programmed conditions are … Continue reading

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