Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a part that helps the car's electric motor work. It's like a switch that isn't turning on or off properly.
The code indicates an issue with the transistor in the inverter that controls the drive motor 'A'.
The P1C0C code is set when the powertrain control module (PCM) detects a malfunction in the transistor circuit of the drive motor 'A' inverter. This transistor is responsible for managing the power flow from the battery to the motor, allowing it to operate efficiently.
• Reduced vehicle performance
• Warning light on the dashboard
• Unusual noises from the motor
• Faulty inverter transistor
• Wiring issues in the inverter circuit
• Defective powertrain control module (PCM)
Inverter: A device that converts direct current (DC) to alternating current (AC).
Transistor: A semiconductor device used to amplify or switch electronic signals.
• Check for any other related trouble codes.
• Inspect the wiring and connections in the inverter circuit.
• Test the inverter transistor for proper operation.
• Replace the faulty inverter transistor.
• Repair or replace damaged wiring.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Soldering iron
$300 - $1500
Difficult
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance of the vehicle's electrical system.
• Ensure proper cooling of the inverter.
• Avoid overloading the vehicle's electrical system.
Electrical System Issue
• Avoid driving the vehicle until the issue is resolved.
• Consult a professional mechanic for diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on hybrid components.
This code has become more common with the increase in hybrid and electric vehicles, as they rely heavily on complex electrical systems.
High – This issue can lead to reduced vehicle performance and should be addressed promptly.
Driving with this code active may not be safe and could lead to further damage to the vehicle.
• Vehicle must be in 'Ready' mode.
• Ensure the battery is fully charged.
The inverter is typically located near the vehicle's battery pack or electric motor.
Q: Can I drive my car with a P1C0C code?
A: It's not recommended to drive with this code active, as it can affect vehicle performance and safety.
Q: How do I reset the P1C0C code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is resolved first.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.