P0EFA

Battery Charger A Input Voltage Sensor B Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Battery charging problems
Unstable operation of electrical systems
Reduced vehicle performance

Causes

Input voltage sensor fault
Open or short circuit in the sensor circuit
Battery charger problems
Control module malfunction
Corrosion or poor contact in connectors

How to Fix

Check the voltage at the input voltage sensor
Inspect the sensor circuit for damage
Check connectors and connections for corrosion
Replace input voltage sensor if necessary
Check and, if necessary, replace the battery charger

Related codes

P0EFB P0EFC P0EFD