P0C46 OBD-II: Hybrid Battery Pack Coolant Temperature Sensor Circuit

P0C46 Severity

Urgent

Should you fix P0C46 yourself?

Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.

Proper diagnosis will save you time and money on unnecessary repairs.

Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.

Schedule Diagnosis

P0C46 Summary Find a Repair Shop P0C46 Details Ask RepairPal CarGenius Other OBD-II Codes

What causes OBD-II fault code P0C46?

The hybrid battery pack uses an inlet and outlet coolant temperature sensor to monitor and control the hybrid battery temperature. If one or both of these sensors sends back an implausible signal, code P0C46 is set.

OBD II Fault Code

OBD II P0C46

OBD-II Code High voltage system may not start in cold weather is defined as a Hybrid Battery Pack Coolant Temperature Sensor Circuit

High voltage system may not start in cold weather Symptoms

High voltage system may not start in cold weather

Common Problems That Trigger the P0C46 Code

Battery Energy Control Module (BECM) failure
High voltage battery pack coolant temperature sensor failure
Wiring issue

OBD Code Resources

Exceptional warranty

Shops offer at least a 12-month or 12,000-mile warranty.

Satisfied customers

We ensure high satisfaction through verified customer reviews.

Transparent pricing

You'll get a Fair Price Guarantee on all RepairPal estimates.

Millions trust us for auto repair — RepairPal Certified^® locations must pass a rigorous approval process to ensure quality, customer satisfaction, and fair pricing.

OBD II Fault Code

OBD II P0C46

OBD-II Code High voltage system may not start in cold weather is defined as a Hybrid Battery Pack Coolant Temperature Sensor Circuit

High voltage system may not start in cold weather Symptoms

High voltage system may not start in cold weather

Common Problems That Trigger the P0C46 Code

Battery Energy Control Module (BECM) failure
High voltage battery pack coolant temperature sensor failure
Wiring issue

P0C46 OBD-II: Hybrid Battery Pack Coolant Temperature Sensor Circuit

Should you fix P0C46 yourself?

What causes OBD-II fault code P0C46?

Need a P0C46 diagnosis? Trust our experts.

OBD II Fault Code

High voltage system may not start in cold weather Symptoms

Common Problems That Trigger the P0C46 Code

OBD Code Resources

Ask our experts about P0C46.

Other OBD-II Codes

OBD II Fault Code

High voltage system may not start in cold weather Symptoms

Common Problems That Trigger the P0C46 Code