Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's battery charger isn't getting enough power to charge the battery properly. It's like trying to fill a water balloon with a tiny trickle of water - it takes too long and might not work.
The vehicle's onboard computer has detected that the voltage input to the secondary battery charger is below the expected level.
The P0E86 code is triggered when the powertrain control module (PCM) detects that the input voltage to the secondary battery charger (Charger B) is lower than the threshold required for proper operation. This could affect the vehicle's ability to maintain battery charge, especially in hybrid or electric vehicles.
• Battery not charging properly
• Warning light on the dashboard
• Reduced vehicle performance
• Faulty battery charger
• Poor electrical connections
• Faulty wiring or connectors
PCM: Powertrain Control Module
Voltage: The electrical potential difference between two points, measured in volts.
• Check battery charger connections for corrosion or looseness.
• Inspect wiring and connectors for damage.
• Test the battery charger for proper operation.
• Clean and tighten battery charger connections.
• Repair or replace damaged wiring or connectors.
• Replace the battery charger if faulty.
• Multimeter
• Wire stripper/crimper
• Socket set
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections.
• Keep electrical components clean and dry.
• Schedule routine maintenance checks.
Electrical Issue
• Avoid using high-power accessories until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis.
• Monitor battery charge levels regularly.
Check with your vehicle manufacturer, as battery and charging system components may be covered under warranty.
This code is more commonly reported in hybrid and electric vehicles due to their reliance on battery systems.
Moderate – While the vehicle may still operate, failure to address this issue could lead to battery discharge and reduced performance.
Ignoring this code may lead to battery failure, which could affect vehicle safety and performance. Always address vehicle warnings promptly.
• Vehicle in 'ON' position
• Battery charger connected
The battery charger is typically located in the engine compartment or trunk, depending on the vehicle model.
Q: Can I drive my car with this code?
A: You may be able to drive short distances, but it's best to get it checked soon to avoid battery issues.
Q: Will this code affect my car's performance?
A: Yes, it could lead to reduced performance if the battery isn't charging properly.
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