P0512 – BMW DTC

BMW DTC P0512 – Starter Request Circuit

DTC P0512 meaning on BMW

DTC P0512 in a BMW indicates a fault in the starter request circuit. This diagnostic trouble code is triggered when the Engine Control Module (ECM) detects an incorrect voltage signal from the starter relay circuit.

BMW DTC P0512 symptoms

Symptoms of DTC P0512 in a BMW may include:

• Engine not cranking when the key is turned
• Intermittent starting issues
• Check Engine Light illuminated on the dashboard

BMW DTC P0512 causes

Common causes of DTC P0512 in a BMW include:

• Defective starter relay
• Wiring issues in the starter circuit
• Faulty ignition switch

BMW DTC P0512 seriousness

DTC P0512 should be addressed promptly as it can lead to starting issues and potential vehicle breakdowns. Ignoring this fault may result in the vehicle not starting when needed.

How to diagnose DTC P0512 on BMW

To diagnose DTC P0512 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the ECM.
2. Inspect the starter relay and related wiring for any visible damage or corrosion.
3. Check the voltage signal at the starter relay to ensure it is within specifications.

How to fix DTC P0512 on BMW

To fix DTC P0512 on a BMW, consider the following:

1. Replace the faulty starter relay if it is found to be defective.
2. Repair any damaged wiring in the starter circuit.
3. If the ignition switch is faulty, replace it with a new one.

How to erase DTC P0512 on BMW

To erase DTC P0512 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes stored in the ECM.
2. After making the necessary repairs, perform a test drive to ensure the issue has been resolved.

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

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.