The P2536: Ignition Switch Accessory Position Circuit code indicates an issue with the accessory position of the ignition switch. This could be due to a malfunctioning ignition switch, wiring issues, or connector problems. The accessory position is crucial for powering various electrical systems, such as the radio and HVAC, when the engine is not running.
P2536 – Quick Overview
Code | Information |
---|---|
Meaning | P2536: Ignition Switch Accessory Position Circuit |
Is it serious? | Moderately serious. It can lead to malfunctioning electrical components that depend on the accessory position, affecting convenience features when the engine is off. |
Possible causes | – Issues with the ignition switch accessory position circuit – Faulty ignition switch – Wiring or connector problems |
How to diagnose? | – Inspect the ignition switch accessory position circuit – Test the ignition switch – Check wiring and connectors – Replace faulty components if needed |
Code Meaning
The P2536: Ignition Switch Accessory Position Circuit code means that there is an issue in the circuit that controls the accessory position of the ignition switch. The accessory position allows specific electrical components, such as the radio and power outlets, to function without the engine running. Issues with this circuit can prevent these accessories from working correctly, leading to inconvenience for the vehicle owner.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to determine if there are other related codes present. Additional codes might indicate further issues related to the ignition system or accessory components. | OBD-II Scanner |
Inspect the Ignition Switch Accessory Position Circuit | Visually inspect the ignition switch and the wiring related to the accessory position. Look for any signs of damage, such as loose connections, broken plastic housing, or corrosion that may affect the switch’s ability to function properly. | Flashlight, Safety Gloves |
Check Wiring and Connectors | Examine all wiring and connectors connected to the ignition switch accessory circuit. Look for damaged insulation, corroded terminals, or loose connections. Repair or replace any damaged wiring and ensure that all connectors are properly seated. | Flashlight, Multimeter |
Test the Ignition Switch | Use a multimeter to test the ignition switch in the accessory position. Verify that the switch outputs the correct voltage and that it maintains stable voltage when turned to the accessory position. If the switch is not functioning correctly, it should be replaced. | Multimeter |
Verify Power Supply and Ground | Use a multimeter to ensure that the ignition switch has a proper power supply and ground connection when in the accessory position. An improper power supply or a weak ground could prevent the circuit from functioning as intended. | Multimeter |
Inspect Fuse Box and Relays | Check the fuses and relays related to the ignition switch accessory circuit. Make sure that none of the fuses are blown and that all related relays are operating properly. Replace any faulty fuses or relays. | Fuse Puller, Multimeter |
Perform Functional Test of the Accessories | Turn the ignition switch to the accessory position and test all powered components, such as the radio, power windows, and other accessory features. Note any components that do not respond properly, as this could indicate a localized circuit issue. | Diagnostic Tool |
Replace Faulty Components | Replace any faulty components, such as the ignition switch, wiring, or connectors. Ensure that replacement parts meet OEM specifications to guarantee compatibility and reliability of the circuit. | Replacement Parts, Vehicle Owner’s Manual |
Clear the Code and Test the System | After completing repairs, clear the P2536 code using an OBD-II scanner. Start the vehicle and test the ignition switch accessory position to verify proper function and to confirm that the code does not reoccur. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | Re-scan the vehicle to confirm that the P2536 code has not returned. If the code persists, further diagnostics may be required to determine any underlying issues. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)