BMW DTC P11B5 – Intake Air Temperature 2 Too High (Bank 2)
DTC P11B5 meaning on BMW
DTC P11B5 on a BMW indicates that the Intake Air Temperature 2 sensor on Bank 2 is reading a temperature that is too high. This sensor is responsible for measuring the temperature of the air entering the engine for proper fuel delivery and combustion.
BMW DTC P11B5 symptoms
Symptoms of DTC P11B5 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 P11B5 causes
The most common causes of DTC P11B5 on a BMW include a faulty Intake Air Temperature sensor, wiring issues, or a problem with the engine control module (ECM) that is causing incorrect temperature readings.
BMW DTC P11B5 seriousness
While DTC P11B5 may not cause immediate engine failure, it can lead to poor engine performance and decreased fuel efficiency if left unresolved. It is recommended to address this issue promptly to prevent further damage to the engine.
How to diagnose DTC P11B5 on BMW
To diagnose DTC P11B5 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 P11B5 on BMW
To fix DTC P11B5 on a BMW, the faulty Intake Air Temperature sensor on Bank 2 would need to be replaced. Additionally, any damaged wiring should be repaired or replaced. After the repairs are made, the fault code should be cleared from the ECM to reset the check engine light.
How to erase DTC P11B5 on BMW
To erase DTC P11B5 on a BMW, a diagnostic scanner can be used to clear the fault code from the engine control module. Once the repairs have been completed and the issue resolved, clearing the fault code will reset the check engine light and ensure that the system is functioning properly.
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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