P2535 – BMW DTC

BMW DTC P2535 – Ignition Switch Run/Start Position Circuit High

DTC P2535 meaning on BMW

DTC P2535 on a BMW indicates a fault in the ignition switch run/start position circuit, specifically a high voltage condition. This means that the Engine Control Module (ECM) has detected a voltage signal higher than the specified range when the ignition switch is in the run/start position.

BMW DTC P2535 symptoms

Symptoms of DTC P2535 on a BMW may include:

• Engine not starting
• Engine stalling
• Check Engine Light (CEL) illuminated
• Loss of power

BMW DTC P2535 causes

Common causes of DTC P2535 on a BMW include:

• Faulty ignition switch
• Short circuit in the ignition switch wiring
• Faulty Engine Control Module (ECM)
• Corroded or loose electrical connections

BMW DTC P2535 seriousness

DTC P2535 should be addressed promptly as it can lead to starting issues and potential stalling of the engine while driving. Ignoring this fault may result in unsafe driving conditions and further damage to the vehicle.

How to diagnose DTC P2535 on BMW

To diagnose DTC P2535 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related data
2. Inspect the ignition switch and its wiring for any visible damage or corrosion
3. Check the voltage readings at the ignition switch using a multimeter
4. Inspect the ECM for any signs of damage or malfunction
5. Perform a thorough visual inspection of the electrical connections in the circuit

How to fix DTC P2535 on BMW

To fix DTC P2535 on a BMW, the following steps may be taken:

1. Replace the faulty ignition switch if necessary
2. Repair any damaged or corroded wiring in the ignition switch circuit
3. If the ECM is faulty, it may need to be replaced or reprogrammed
4. Ensure all electrical connections are secure and free of corrosion

How to erase DTC P2535 on BMW

To erase DTC P2535 on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault code from the ECM memory
2. After clearing the code, start the engine and ensure the fault code does not return
3. If the fault code persists, further diagnosis and repairs may be necessary

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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