Battery Charger A Input Voltage Sensor A Circuit Intermittent/Erratic
What it means
The battery charger A input sensor A circuit is dropping out or jumping around instead of giving a steady signal. This input lets the charger monitor the power coming in from the charging source, which it uses to control charging.
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
This sensor measures the voltage that the on-board charger receives from the charging cable on a plug-in hybrid or electric vehicle. The charger control module uses it to check the supply is within range and to decide whether charging can begin. It is part of a high-voltage circuit, so work on it is for trained people. A fault may prevent or interrupt charging.
Common symptoms
What you'll notice
- Battery not charging or charging slowly
- Illumination of the warning light
Common causes
Most likely first
- Malfunctioning battery charger or power supply
- Faulty input current sensor
- Loose or corroded electrical connections
- Short circuit in the input current sensor circuit
- Defective wiring in the battery charger A circuit
How to diagnose & fix
Work through it in order
- Check the battery charger's connections and ensure they are secure
- Verify that the battery charger is receiving power and functioning properly
- Inspect the input voltage sensor circuit for any loose wires or damaged components
- Test the input voltage sensor using a multimeter to ensure it is reading accurately
- If necessary, replace the input voltage sensor circuit with a new one
Related codes
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