BMW DTC P118A – Engine Oil Separator Heating Circuit High
DTC P118A meaning on BMW
The Diagnostic Trouble Code (DTC) P118A for BMW refers to the Engine Oil Separator Heating Circuit High. This code indicates that there is a malfunction in the heating circuit of the engine oil separator, which is responsible for controlling the temperature of the oil separator unit.
BMW DTC P118A symptoms
Symptoms of the BMW DTC P118A may include:
- Check Engine Light illuminated on the dashboard
- Reduced engine performance
- Increased fuel consumption
- Engine running rough or stalling
BMW DTC P118A causes
Common causes of the BMW DTC P118A may include:
- Faulty engine oil separator heating element
- Short circuit or open circuit in the heating circuit
- Wiring issues or poor electrical connections
BMW DTC P118A seriousness
The BMW DTC P118A should not be ignored as it can lead to potential engine performance issues and increased fuel consumption. It is recommended to address this issue promptly to prevent further damage to the vehicle.
How to diagnose DTC P118A on BMW
To diagnose the DTC P118A on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the vehicle’s computer
- Inspect the engine oil separator heating circuit for any visible damage or loose connections
- Test the engine oil separator heating element for continuity and proper operation
- Check the wiring harness for any signs of wear or damage
How to fix DTC P118A on BMW
To fix the DTC P118A on a BMW, you can consider the following steps:
- Replace the faulty engine oil separator heating element
- Repair any short circuits or open circuits in the heating circuit
- Ensure all wiring connections are secure and free of corrosion
- Clear the fault codes using a diagnostic scanner after the repairs have been completed
How to erase DTC P118A on BMW
To erase the DTC P118A on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. Once the repairs have been made to address the issue causing the fault code, you can reset the codes to turn off the Check Engine Light and ensure the problem 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
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