BMW DTC P118F – Intake Air Temperature 1 Minimum Too Low (Bank 2)
DTC P118F meaning on BMW
DTC P118F on a BMW indicates that the Intake Air Temperature 1 sensor on Bank 2 is reading a temperature that is lower than the minimum threshold set by the Engine Control Module (ECM). This sensor is responsible for measuring the temperature of the air entering the engine for proper fuel delivery and combustion.
BMW DTC P118F symptoms
Symptoms of DTC P118F on a BMW may include poor engine performance, rough idling, decreased fuel efficiency, and potentially an illuminated check engine light on the dashboard.
BMW DTC P118F causes
The possible causes of DTC P118F on a BMW can include a faulty Intake Air Temperature sensor, wiring issues in the sensor circuit, or a problem with the ECM itself.
BMW DTC P118F seriousness
While DTC P118F may not cause immediate harm to the engine, it can lead to decreased performance and fuel efficiency. Ignoring this issue can potentially cause further damage to the engine over time.
How to diagnose DTC P118F on BMW
To diagnose DTC P118F on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the Intake Air Temperature sensor and its wiring. They may also test the sensor’s resistance and voltage to determine if it is functioning correctly.
How to fix DTC P118F on BMW
Fixing DTC P118F on a BMW may involve replacing the Intake Air Temperature sensor if it is found to be faulty. Additionally, checking and repairing any damaged wiring in the sensor circuit can help resolve the issue. In some cases, reprogramming or replacing the ECM may be necessary.
How to erase DTC P118F on BMW
Once the underlying issue causing DTC P118F on a BMW has been fixed, the fault code can be cleared using a diagnostic scanner. This will reset the check engine light and allow the ECM to monitor the system for any new faults.
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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