Hybrid/EV Battery Pack Current Sensor B Circuit High

Common symptoms

What you'll notice

• Check the battery pack current sensor for any visible damage or loose connections.
• Measure the resistance of the current sensor circuit using a multimeter and compare it to the recommended specifications.
• Inspect and clean the terminals and connectors of the current sensor to ensure proper electrical contact.
• Clear the error code using a diagnostic tool and see if it reoccurs. If it does, proceed with further troubleshooting steps.
• Replace the current sensor if all previous steps have been completed and the issue persists.

Common causes

Most likely first

1. Faulty hybrid/EV battery pack current sensor B
2. Loose or corroded electrical connections related to the hybrid/EV battery pack current sensor B
3. Short circuit or open circuit in the hybrid/EV battery pack current sensor B circuit
4. Malfunctioning hybrid/EV battery pack management system
5. Damaged wiring harness or connectors associated with the hybrid/EV battery pack current sensor B

How to diagnose & fix

Work through it in order

1. Hybrid/EV warning light is illuminated on the dashboard
2. Decreased power and performance of the vehicle
3. Reduced fuel efficiency
4. Difficulty starting the engine
5. Unusual noises or vibrations coming from the engine or hybrid system