Engine-Codes.com
Engine-Codes – Generic – P2535

P2535 Code - Ignition On/Start Switch Circuit High Voltage

Quick Answer

The P2535 diagnostic trouble code (DTC) indicates that there is a high voltage condition detected in the ignition switch circuit when the ignition is in the On or Start position. Common causes include Faulty ignition switch, Short circuit in the ignition switch wiring, Corrosion or poor connection in the ignition switch circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2535 indicates Ignition On/Start Switch Circuit High Voltage.
Common causes
Common causes include Faulty ignition switch, Short circuit in the ignition switch wiring, Corrosion or poor connection in the ignition switch circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P2535 Description

The P2535 diagnostic trouble code (DTC) indicates that there is a high voltage condition detected in the ignition switch circuit when the ignition is in the On or Start position. The ignition switch is responsible for sending power to various systems in the vehicle, including the engine control module (ECM), fuel pump, and other critical components. A high voltage in this circuit can lead to issues with starting the vehicle, erratic engine performance, and potential safety hazards. If left unresolved, it can cause further damage to the vehicle's electrical system and pose a risk of fire.

OBDII Code P2535 - Ignition On/Start Switch Circuit High Voltage
P2535 Code - Ignition On/Start Switch Circuit High Voltage

Common Causes of P2535

  1. Faulty ignition switch
  2. Short circuit in the ignition switch wiring
  3. Corrosion or poor connection in the ignition switch circuit
  4. ECM malfunction
  5. Electrical system issues such as a drained battery or alternator failure

Symptoms of P2535

  1. Difficulty starting the vehicle
  2. Engine stalling or rough idling
  3. Loss of power while driving
  4. Illumination of the Check Engine Light
  5. Electrical issues such as flickering lights or malfunctioning accessories

How to Fix P2535

  1. Begin by diagnosing the exact cause of the high voltage in the ignition switch circuit using a multimeter and wiring diagram.
  2. Inspect the ignition switch and its wiring for any signs of damage, corrosion, or loose connections. Replace or repair as necessary.
  3. Check the ECM for any fault codes or malfunctions that may be contributing to the issue. Address any ECM issues accordingly.
  4. Clear the DTC and reset the ECM to see if the code returns after repairs have been made.
  5. Test the vehicle to ensure that the issue has been resolved and that the ignition switch circuit is functioning properly.

Cost to Fix P2535

The typical repair costs for addressing a P2535 code can range from $100 to $300, depending on the exact cause of the issue and the parts and labor required for repairs. This estimate may vary based on the location, vehicle make and model, and the specific repair shop rates. It's advisable to consult with a trusted mechanic or repair shop for a more accurate cost estimate based on your vehicle's needs.

Need more information about the P2535 code?

Need more information on how to fix the P2535 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2535 code diagnosed by a professional: Find a repair shop in your area

Code P2535 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2535 Code

1. What are the common symptoms of OBDII code P2535 (Ignition On/Start Switch Circuit High Voltage)?

- Common symptoms include difficulty starting the vehicle, illuminated Check Engine light, and potential loss of keyless entry functionality.

2. What are the possible causes of OBDII code P2535?

- Potential causes of this code include a faulty ignition switch, damaged wiring or connectors in the ignition circuit, or a malfunctioning engine control module (ECM).

3. How can I diagnose the Ignition On/Start Switch Circuit High Voltage issue?

- Diagnose by checking the ignition switch for proper operation, inspecting the wiring and connectors for damage, and using a scan tool to retrieve and analyze the fault code data.

4. Can I drive my vehicle with OBDII code P2535 present?

- It is generally not recommended to drive with this code present, as it can lead to starting issues and potential safety hazards. It is best to address the issue promptly.

5. How can I repair OBDII code P2535 myself?

- You can attempt to repair this code yourself by replacing the faulty ignition switch, repairing any damaged wiring or connectors, or resetting the ECM after fixing the issue.

6. What are the potential risks of ignoring OBDII code P2535?

- Ignoring this code can lead to intermittent starting problems, potential stalling while driving, and overall decreased reliability of the vehicle's ignition system.

7. Can a faulty battery cause OBDII code P2535?

- While a faulty battery itself may not directly cause this code, it can contribute to electrical issues that may lead to high voltage readings in the ignition circuit.

8. How much does it cost to repair OBDII code P2535 at a mechanic?

- The cost of repairing this code at a mechanic can vary depending on the specific cause and any additional parts or labor required, but it may range from $100 to $300 or more.

9. Is OBDII code P2535 a common issue in certain vehicle makes and models?

- This code can be more common in vehicles with known ignition system issues or older vehicles with worn-out components, but it can potentially occur in any make and model.

10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P2535?

- Yes, a DIY enthusiast with basic automotive knowledge and the right tools can often successfully diagnose and repair this code, especially if the issue is related to the ignition switch or wiring.

Discuss the causes and fixes for P2535 OBDII Code

Submit a New Comment

Code P2535 comments

No comments found for this page.