P2535 Code - Ignition On/Start Switch Circuit High Voltage
Quick Answer
The Body Control Module (BCM) controls the ignition main relay through the control circuit by applying a voltage to the circuit. Common causes include Faulty Ignition On/Start Switch, Ignition On/Start Switch harness is open or shorted, Ignition On/Start Switch circuit poor electrical connection. 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 On/Start Switch, Ignition On/Start Switch harness is open or shorted, Ignition On/Start Switch circuit poor electrical connection.
- 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.
Code P2535 Description
The Diagnostic Trouble Code (DTC) will be set when the control module detects greater than 6 V or greater on the ignition voltage circuit, with the ignition turned OFF.
What are the Possible Causes of the DTC P2535?
- Faulty Ignition On/Start Switch
- Ignition On/Start Switch harness is open or shorted
- Ignition On/Start Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC P2535?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2535 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P2535 Buick — Ignition On/Start Switch Circuit High Voltage
- P2535 Cadillac — Ignition On/Start Switch Circuit High Voltage
- P2535 Chevrolet — Ignition On/Start Switch Circuit High Voltage
- P2535 Dodge — Ignition On/Start Switch Circuit High Voltage
- P2535 GMC — Ignition On/Start Switch Circuit High Voltage
- P2535 Pontiac — Ignition On/Start Switch Circuit High Voltage
- P2535 Saturn — Ignition On/Start Switch Circuit High Voltage
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.
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