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 has a problem with its power supply. It's like when a phone charger isn't working right and can't charge the phone properly.
The P2E91 code indicates an issue with the internal power supply of the battery charger B, potentially affecting its ability to charge the vehicle's battery efficiently.
The P2E91 code is triggered when the vehicle's onboard diagnostic system detects a performance issue within the internal power supply of the battery charger B. This may result from electrical faults, component failure, or software issues affecting the charger's operation.
• Battery not charging properly
• Warning light on the dashboard
• Reduced vehicle performance
• Faulty battery charger B
• Electrical wiring issues
• Software malfunction
Battery Charger: A device that supplies electric energy to recharge a battery.
Multimeter: An instrument used to measure voltage, current, and resistance.
• Check for any related error codes.
• Inspect the battery charger and wiring for damage.
• Test the battery charger's output with a multimeter.
• Replace faulty battery charger B.
• Repair or replace damaged wiring.
• Update or reprogram the vehicle's software.
• Multimeter
• Diagnostic scanner
• Wiring repair kit
$200 - $600
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly inspect battery charger connections.
• Ensure software updates are performed.
• Avoid overloading the electrical system.
Battery Charger Issue
• Avoid using electrical accessories until repaired.
• Schedule a diagnostic check with a professional.
• Monitor battery charge levels regularly.
Check with the vehicle manufacturer for warranty coverage on battery charger components.
This code has been associated with issues in vehicles equipped with advanced battery management systems, particularly in hybrid and electric models.
Moderate – It should be addressed soon to prevent battery drain and potential vehicle starting issues.
Driving with a malfunctioning battery charger can lead to battery failure. Ensure repairs are conducted by a qualified technician.
• Vehicle in a safe, stationary position
• Battery charger connected and operational
The battery charger B is typically located near the vehicle's battery or within the engine compartment.
Q: Can I drive with a P2E91 code?
A: It's not recommended as it can lead to battery issues and affect vehicle performance.
Q: How do I reset the P2E91 code?
A: After repairs, use a diagnostic scanner to clear the code. If the issue persists, further diagnosis is needed.
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