Monthly Archives: February 2014

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

Posted in Trouble Codes, Troubleshooting | Comments Off on P0A04 – Open Wiring Fault (or “Open Cell Voltage Fault”)

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

Posted in Trouble Codes, Troubleshooting | Comments Off on P0A03 – Pack Voltage Mismatch Error

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

Posted in Trouble Codes, Troubleshooting | Comments Off on P0A80 – Weak Cell Fault

P0A0B – Internal Software Fault

This error code indicates that the Orion BMS has determined that an internal hardware fault has occurred. If this error message occurs, please download the associated freeze frame data and contact the factory or authorized dealer for assistance. Please save … Continue reading

Posted in Trouble Codes, Troubleshooting | Comments Off on P0A0B – Internal Software Fault

P0A0A – Internal Heatsink Thermistor Fault

This error code indicates that the Orion BMS has determined that an internal hardware fault has occurred. If this error message occurs, please download the associated freeze frame data and contact the factory or authorized dealer for assistance. Please save … Continue reading

Posted in Trouble Codes, Troubleshooting | Comments Off on P0A0A – Internal Heatsink Thermistor Fault

P0A09 – Internal Hardware Fault

This error code indicates that the Orion BMS has determined that an internal hardware fault has occurred. If this error message occurs, please download the associated freeze frame data and contact the factory or authorized dealer for assistance. Please save … Continue reading

Posted in Trouble Codes, Troubleshooting | Comments Off on P0A09 – Internal Hardware Fault

P0A12 – Cell Balancing Stuck Off

This error code indicates that the Orion BMS has determined that an internal hardware fault has occurred. If this error message occurs, please download the associated freeze frame data and contact the factory or authorized dealer for assistance. Please save … Continue reading

Posted in Trouble Codes, Troubleshooting | Comments Off on P0A12 – Cell Balancing Stuck Off

P0AC0 – Current Sensor Fault

A current sensor fault is triggered if the analog voltages from the attached current sensor stray outside of the normal range or if the values from the 2 redundant current sensors do not match. The current sensor may be sized … Continue reading

Posted in Trouble Codes, Troubleshooting | Comments Off on P0AC0 – Current Sensor Fault

P0A1F – Internal Cell Communication Fault

This error indicates that the Orion BMS has encountered an error trying to communicate with the isolated circuitry that measure cell tap voltages. This error can be caused by external electrical noise if the BMS is not properly grounded or … Continue reading

Posted in Trouble Codes, Troubleshooting | Comments Off on P0A1F – Internal Cell Communication Fault

P0AFA – Low Cell Voltage Fault

This fault code is triggered when the voltage of a cell falls below 0.09 volts (90 mV). This fault can be caused by a cell that is incorrectly set in the BMS profile as a “populated” cell, a disconnected cell … Continue reading

Posted in Trouble Codes, Troubleshooting | Comments Off on P0AFA – Low Cell Voltage Fault