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 computer has detected a problem with the ignition switch when it's in the accessory position. It's like when you turn the key just a little bit to listen to the radio without starting the car, and something's not working right.
The P2537 code indicates that there is a low voltage condition in the ignition switch accessory position circuit. This can affect the electrical systems that are supposed to work when the key is in the accessory position.
The ignition switch accessory position circuit is responsible for providing power to certain electrical components when the ignition key is in the accessory position. A low voltage condition in this circuit can prevent these components from receiving the necessary power, leading to various electrical issues.
• Electrical components not working in accessory mode
• Difficulty turning the key to the accessory position
• Warning lights on the dashboard
• Faulty ignition switch
• Damaged wiring or connectors in the ignition circuit
• Blown fuse related to the accessory circuit
Ignition Switch: A component that allows the driver to start the engine and control power to the vehicle's electrical systems.
Accessory Position: A position of the ignition switch that allows electrical components to operate without the engine running.
• Check the ignition switch for proper operation.
• Inspect wiring and connectors for damage or corrosion.
• Test the fuses related to the accessory circuit.
• Replace the faulty ignition switch.
• Repair or replace damaged wiring or connectors.
• Replace any blown fuses.
• Multimeter
• Screwdriver set
• Wiring repair kit
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain the ignition switch.
• Ensure wiring and connectors are free from corrosion.
• Avoid excessive force when turning the ignition key.
Electrical Issue
• Avoid using excessive force when turning the key.
• Get regular electrical system checks during maintenance.
Check with your vehicle manufacturer for warranty coverage on electrical components.
This code has been associated with issues in vehicles with aging ignition systems or in vehicles with frequent use of the accessory position.
Moderate – This issue can lead to inconvenience and potential electrical failures, so it should be addressed soon.
Driving with electrical issues can lead to unsafe conditions. Always ensure your vehicle's electrical systems are functioning properly.
• Ignition key in accessory position
• Vehicle's electrical system active
The ignition switch is typically located on the steering column or dashboard, where the key is inserted.
Q: Can I drive with a P2537 code?
A: While you can drive with this code, it may lead to electrical issues. It's best to address it soon.
Q: How can I prevent this issue?
A: Regular maintenance and gentle use of the ignition switch can help prevent this issue.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
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Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.