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 is getting too much electricity, which can be bad for the battery.
The vehicle's onboard computer has detected that the voltage input to the Battery Charger B is higher than the specified limit.
P0E87 is triggered when the powertrain control module (PCM) detects a voltage level at Battery Charger B input that exceeds the manufacturer's specified limit. This can be due to a malfunctioning voltage regulator, wiring issues, or a faulty charger.
• Warning light on dashboard
• Battery overheating
• Reduced battery life
• Faulty battery charger
• Defective voltage regulator
• Wiring issues or short circuit
Voltage Regulator: A device that maintains a constant voltage level to electrical equipment.
PCM: Powertrain Control Module, the vehicle's onboard computer that manages engine and transmission functions.
• Check the battery charger for faults.
• Inspect wiring and connections for damage or corrosion.
• Test the voltage regulator for proper operation.
• Replace the faulty battery charger.
• Repair or replace damaged wiring.
• Replace the voltage regulator if defective.
• Multimeter
• Diagnostic scanner
• Wrench set
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery and charging system.
• Ensure all electrical connections are tight and clean.
• Avoid overloading the vehicle's electrical system.
Electrical System Issue
• Avoid driving the vehicle until the issue is resolved.
• Have the vehicle inspected by a professional mechanic.
Check with the vehicle manufacturer for warranty coverage on the battery and charging system.
This code has been more prevalent in hybrid and electric vehicles due to the complexity of their charging systems.
High – Continued driving with this issue can lead to battery damage or failure.
Driving with a malfunctioning charging system can lead to battery failure, which may cause the vehicle to stop unexpectedly.
• Vehicle in 'On' position
• Battery charger connected
The battery charger is typically located near the vehicle's battery or under the hood.
Q: Can I drive with a P0E87 code?
A: It's not recommended to drive with this code active, as it can cause damage to the battery.
Q: How can I prevent this code from appearing?
A: Regular maintenance of the battery and charging system can help prevent this code.
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