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 part of the car that charges the battery isn't working right. It's like when your phone charger is broken and can't charge your phone.
The vehicle's battery charger has an internal power supply issue affecting its performance.
The P2E90 code indicates a problem with the internal power supply of Battery Charger A. This can affect the charger's ability to properly manage and supply power to the vehicle's battery system, potentially leading to charging inefficiencies or failures.
• Battery not charging
• Warning light on dashboard
• Reduced vehicle performance
• Faulty battery charger
• Damaged wiring or connectors
• Internal power supply failure
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosing and reporting.
Multimeter: A tool used to measure voltage, current, and resistance in electrical components.
• Check for any visible damage to the battery charger and wiring.
• Use a diagnostic tool to confirm the P2E90 code.
• Test the battery charger's output and internal power supply.
• Replace the faulty battery charger.
• Repair or replace damaged wiring or connectors.
• Ensure all connections are secure and free of corrosion.
• OBD-II scanner
• Multimeter
• Wrench set
$300 - $800
Moderate
• Chevrolet Volt
• Toyota Prius
• Nissan Leaf
• Regular maintenance checks
• Ensure battery charger connections are clean
• Avoid overloading electrical systems
Battery Charger Issue
• Avoid using high-power accessories until fixed.
• Get the vehicle checked by a professional as soon as possible.
Check with your vehicle manufacturer for warranty coverage on battery charger components.
This code has become more common with the increase in hybrid and electric vehicles that rely on complex battery management systems.
High – This issue can lead to battery failure and potential vehicle immobilization.
Driving with a malfunctioning battery charger can lead to unexpected vehicle shutdowns, posing safety risks.
• Vehicle in 'On' position
• Battery charger connected
The battery charger is typically located near the engine compartment or under the vehicle, depending on the model.
Q: Can I drive with the P2E90 code?
A: It's not recommended as it can lead to battery failure and vehicle shutdown.
Q: How do I know if my battery charger is failing?
A: Look for warning lights on the dashboard and check if the battery is not holding charge.
High-End · Full-system diagnostics
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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.
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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.
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