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P0A89 Severity
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
The 14V Power Module, also referred to as the Accessory DC Power Module, monitors the current to the low voltage systems. If the current sensor sends an implausible signal, the 14V Power Module will set code P0A89 and disable the low voltage system.
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OBD-II Code Low voltage systems will not operate is defined as a 14 Volt Power Module Current Sensor Circuit High
The 14V Power Module, also referred to as the Accessory DC Power Module, monitors the current to the low voltage systems. If the current sensor sends an implausible signal, the 14V Power Module will set code P0A89 and disable the low voltage system.