The most common causes of P311C include: Battery management system (BMS) malfunction; High voltage battery cell imbalance; Battery temperature sensor fault; High voltage contactor failure. A professional OBD-II scan tool is recommended for accurate diagnosis.

Recommended steps to address P311C: (1) Stop driving immediately and park in a safe location (2) Do not attempt to restart the vehicle (3) Contact roadside assistance or authorized dealer (4) Have the vehicle towed to an authorized service center. Always consult a qualified EV technician for high-voltage system repairs.

Is it safe to drive with P311C?

No. P311C is a critical fault code indicating an immediate safety risk. Stop driving as soon as safely possible and contact roadside assistance or an authorized service center.

P311C

Critical

High Voltage Circuit Fault

Severity

Critical

What does P311C mean?

Fault code P311C means "High Voltage Circuit Fault". This is a Nissan-specific EV diagnostic trouble code for the Nissan EV platform. It is classified as "battery" with a severity level of "critical". Applicable models: Nissan LEAF (2010+), Nissan LEAF e+ (2019+).

Possible Causes

Battery management system (BMS) malfunction
High voltage battery cell imbalance
Battery temperature sensor fault
High voltage contactor failure

Recommended Actions

1 Stop driving immediately and park in a safe location
2 Do not attempt to restart the vehicle
3 Contact roadside assistance or authorized dealer
4 Have the vehicle towed to an authorized service center

This is a critical fault code. Pull over safely and seek immediate professional assistance.