Battery Charger 14 Volt Output Power Performance
What it means
The 14-volt output power from the battery charger is not meeting what the control module expects. The charger uses this reading to control the 14-volt output that tops up the 12-volt battery.
Can I keep driving? Usually yes, as this mostly affects charging; get it read if charging fails. Do not open high-voltage (orange) cables or covers yourself; leave that to a trained technician.
What this part does
The battery charger is the unit on a plug-in hybrid or electric vehicle that converts power from a charging cable into the form needed to charge the high-voltage battery. It controls how fast charging happens and reports status to other modules. Because it handles high voltage, work on it is for trained people. A fault can mean slow charging or no charging at all.
Common symptoms
What you'll notice
- Battery not charging properly
- Dash warning light for battery or charging system is illuminated
Common causes
Most likely first
- Faulty battery charger
- Loose or corroded battery charger connections
- Defective 14 volt output voltage or current sensor
- Malfunctioning circuitry in the battery charger
- Incorrect voltage output setting on the battery charger
How to diagnose & fix
Work through it in order
- Check the battery connections and clean any corrosion or loose connections
- Inspect and replace the voltage sensor if it is faulty or damaged
- Check and replace any damaged wiring or connectors related to the voltage sensor circuit
Related codes
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