P012F – BMW DTC

BMW DTC P012F – Engine Coolant Temperature / Engine Oil Temperature Correlation

DTC P012F meaning on BMW

The DTC P012F trouble code on BMW vehicles indicates a correlation issue between the engine coolant temperature and engine oil temperature sensors. This means that the Engine Control Module (ECM) has detected a discrepancy between the expected relationship of these two temperatures.

BMW DTC P012F symptoms

Symptoms of the DTC P012F on a BMW may include:

• Check Engine Light (CEL) illuminated
• Engine running hotter or colder than normal
• Reduced engine performance
• Possible engine overheating or overcooling

BMW DTC P012F causes

Common causes of the DTC P012F on BMW vehicles include:

• Defective engine coolant temperature sensor
• Defective engine oil temperature sensor
• Wiring or connection issues between the sensors and ECM
• ECM software or hardware problems

BMW DTC P012F seriousness

The DTC P012F code should be addressed promptly as it can lead to potential engine damage if left unresolved. Ignoring this issue may result in poor engine performance, reduced fuel efficiency, and possible overheating or overcooling of the engine.

How to diagnose DTC P012F on BMW

To diagnose the DTC P012F on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the trouble codes
2. Inspect the engine coolant temperature sensor and engine oil temperature sensor for any signs of damage or corrosion
3. Check the wiring and connections between the sensors and ECM for any faults
4. Perform a live data scan to compare the readings of the two sensors

How to fix DTC P012F on BMW

To fix the DTC P012F on a BMW, the following steps may be taken:

1. Replace the faulty engine coolant temperature sensor or engine oil temperature sensor
2. Repair any damaged wiring or connections between the sensors and ECM
3. Update the ECM software if necessary
4. Clear the trouble codes and perform a test drive to ensure the issue has been resolved

How to erase DTC P012F on BMW

To erase the DTC P012F trouble code on a BMW, a diagnostic scanner can be used to clear the code from the ECM’s memory. After clearing the code, it is recommended to perform a test drive to verify that the issue has been successfully 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

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