P0EF7

Battery Charger A Input Voltage Sensor B Circuit

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–133 (est.)

Symptoms

Check Engine light comes on
Decreased charging performance
Errors in the operation of the hybrid system
Reducing battery power
The vehicle goes into emergency mode

Causes

Voltage sensor B fault
Open or short circuit in the sensor circuit
Poor contact in connectors
Charger problems
Charging control unit malfunction

How to Fix

Check continuity of voltage sensor B circuit
Inspect connectors and connections
Check the functionality of the sensor
Scan the control unit memory for other errors
If necessary, replace the sensor or wiring

Related codes

P0EF8 P0EF9 P0EFA