P2537 Fault Code

P2537 OBD-II Trouble Code Short Description

Ignition Switch Accessory Position Circuit Low

What does trouble code P2537 mean?

  • The P2537 fault code indicates an issue with the ignition switch's accessory position circuit being at a low voltage. This component is crucial for controlling electrical accessories when the vehicle is in the 'accessory' position.
  • It typically suggests a malfunction within the ignition switch, wiring, or electrical connectors related to the circuit.
  • A malfunction in this area can affect the operation of various electrical components, leading to various performance issues.

Symptoms

What are the symptoms of the P2537 code?

  • Symptoms associated with the P2537 code may include:
    • Inability to start the engine or intermittent starting issues.
    • Electrical systems malfunctioning while in the accessory position, such as radio or dashboard lights.
    • Illuminated check engine light or other warning lights on the dashboard.
    • Poor performance of accessories when using the ignition switch.

Causes

What causes the P2537 code?

  • Common causes for the P2537 code include:
    • Defective ignition switch causing improper voltage output.
    • Faulty wiring or corroded connectors disrupting the circuit.
    • Poor battery connection affecting power distribution.
    • Issues with the vehicle's ECU misinterpreting the circuit status.

Possible Solutions

How to fix P2537?

  • To resolve the P2537 fault code, consider the following steps:
    • Inspect and test the ignition switch for proper operation and voltage output.
    • Check wiring and connectors for damage, corrosion, or loose connections, and repair as necessary.
    • Ensure the vehicle's battery is in good condition and clean the terminals.
    • If no issues are found, reset the fault code and conduct tests to see if it reoccurs.