P0C77 OBD-II: Hybrid Battery System Precharge Time Too Short

P0C77 Severity

Urgent

Should you fix P0C77 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.

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What causes OBD-II fault code P0C77?

The high voltage system is controlled by two high voltage contactors that act like switches for the high voltage battery. When the vehicle is off, both switches are open. When the vehicle is turned on, the first switch (Pre-charge Switch) closes, allowing the high voltage to start powering up the rest of the vehicle. If the first switch fails to operate properly, code P0C77 is stored.

OBD II Fault Code

OBD II P0C77

OBD-II Code Wiring issue is defined as a Hybrid Battery System Precharge Time Too Short

Common Problems That Trigger the P0C77 Code

Pre-charge contactor failure
Starter/generator control module failure
Wiring issue

OBD Code Resources

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OBD II Fault Code

OBD II P0C77

OBD-II Code Wiring issue is defined as a Hybrid Battery System Precharge Time Too Short

Common Problems That Trigger the P0C77 Code

Pre-charge contactor failure
Starter/generator control module failure
Wiring issue

P0C77 OBD-II: Hybrid Battery System Precharge Time Too Short

Should you fix P0C77 yourself?

What causes OBD-II fault code P0C77?

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OBD II Fault Code

Common Problems That Trigger the P0C77 Code

OBD Code Resources

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OBD II Fault Code

Common Problems That Trigger the P0C77 Code