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 the car's charging system. It's like when your phone charger isn't working because the plug isn't connected properly.
The P0CFA code indicates an issue with the control pilot charging switch circuit, which is responsible for managing the charging process in electric or hybrid vehicles.
The P0CFA code is triggered when the vehicle's powertrain control module (PCM) detects a low voltage condition in the Control Pilot Charging Switch A circuit. This circuit is crucial for ensuring the proper communication and operation of the vehicle's charging system, particularly in electric and hybrid vehicles.
• Charging system warning light on
• Vehicle not charging properly
• Reduced driving range
• Faulty control pilot charging switch
• Damaged or corroded wiring or connectors
• Faulty powertrain control module (PCM)
PCM: Powertrain Control Module
Circuit: A complete and closed path around which a circulating electric current can flow.
• Inspect the control pilot charging switch and its wiring for damage.
• Check for corrosion or poor connections in the circuit.
• Test the control pilot charging switch for proper operation.
• Replace the faulty control pilot charging switch.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• Multimeter
• OBD-II scanner
• Wire repair tools
$150 - $500
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regularly inspect charging system components.
• Ensure charging connectors are clean and dry.
• Use manufacturer-recommended charging equipment.
Electrical Circuit Issue
• Avoid using non-recommended charging equipment.
• Schedule regular maintenance checks for the charging system.
Check with the vehicle manufacturer for warranty coverage on charging system components.
This code is relatively common in electric and hybrid vehicles due to the complexity of their charging systems.
Moderate – While the vehicle may still operate, charging issues can lead to reduced range or inability to charge.
Ensure all repairs are conducted by a qualified technician to prevent further damage or safety risks.
• Vehicle in park with ignition on
• Charging system connected and active
The control pilot charging switch is typically located near the vehicle's charging port or within the charging system module.
Q: Can I drive my car with this code?
A: You can drive the car, but you may experience charging issues or reduced range.
Q: Will this code affect my vehicle's performance?
A: It primarily affects the charging system, so driving performance may not be directly impacted, but charging efficiency will be.
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