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 part of the car that helps create electricity, like the alternator, and it's not working as it should.
The P2D58 code is triggered when the vehicle's computer detects a performance issue with Generator B, which is responsible for generating electrical power.
The P2D58 code indicates a mechanical performance issue with Generator B. This could involve problems with the generator's internal components, such as the rotor, stator, or bearings, leading to insufficient power generation or mechanical failure.
• Battery warning light on the dashboard
• Dimming headlights
• Electrical accessories not functioning properly
• Worn or damaged generator bearings
• Faulty rotor or stator
• Loose or damaged drive belt
Generator: A device that converts mechanical energy into electrical energy.
Rotor: The rotating part of an electrical machine.
• Inspect the generator for physical damage or wear.
• Check the drive belt for tension and condition.
• Test the generator's output voltage and current.
• Replace worn or damaged bearings.
• Repair or replace the generator rotor or stator.
• Adjust or replace the drive belt.
• Multimeter
• Belt tension gauge
• Wrench set
$200 - $600
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance of the generator and drive belt.
• Periodic inspection of electrical connections.
• Ensure proper tension of the drive belt.
Engine Performance
• Have the vehicle inspected by a professional if the battery light comes on.
• Avoid using high-power electrical accessories until the issue is resolved.
Check your vehicle's warranty for coverage on electrical components.
This code has been associated with mechanical wear and tear in generators, particularly in older vehicles.
Moderate – Address this issue soon to prevent battery drain and electrical failures.
Driving with a faulty generator can lead to battery failure and potential safety hazards.
• Engine running
• Electrical load applied
The generator is typically located at the front of the engine, driven by the serpentine belt.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to battery failure and loss of electrical power while driving.
Q: Can I drive with a P2D58 code?
A: It's not recommended to drive for long distances with this code, as it may lead to a dead battery.
Budget · Enhanced code reader
A wired color-screen reader with readiness hotkeys, live data, code definitions, and data logging.
A dependable first-pass scanner for verifying the code and checking live data or readiness monitors.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for voltage, continuity, and basic electrical checks while narrowing down the fault.
View on Amazon
Universal · Socket set
A practical metric and SAE socket set for many diagnostic teardowns and component replacements.
Useful for common under-hood access and removal work during diagnosis or repair.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.