What does code P0A8E mean?

Q: What does code P0A8E mean?

14 Volt Power Module System Voltage High. P0A8E indicates that the 14-volt power module, which is the DC-DC converter that steps high-voltage battery power down to charge the 12-volt system in hybrid and electric vehicles, has reported an output voltage that is higher than the manufacturer's specified range. The computer detected the module's output exceeding the upper threshold for a calibrated amount of time, which can lead to overcharging of the 12-volt battery and potential damage to sensitive electronics.

DTC codes / P0Axx · Hybrid propulsion / P0A8E

P0A8E14 Volt Power Module System Voltage High

P0A8E indicates that the 14-volt power module, which is the DC-DC converter that steps high-voltage battery power down to charge the 12-volt system in hybrid and electric vehicles, has reported an output voltage that is higher than the manufacturer's specified range. The computer detected the module's output exceeding the upper threshold for a calibrated amount of time, which can lead to overcharging of the 12-volt battery and potential damage to sensitive electronics.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.