BMW DTC P1165 – Cold Start Charge Air Temperature Too Low (Bank 2)
DTC P1165 meaning on BMW
DTC P1165 on a BMW indicates that the Cold Start Charge Air Temperature is too low in Bank 2. This means that the temperature of the air entering the engine during cold starts is below the expected threshold, which can affect engine performance and emissions.
BMW DTC P1165 symptoms
Symptoms of DTC P1165 on a BMW may include rough idling, decreased engine performance, reduced fuel efficiency, and potentially an illuminated check engine light on the dashboard.
BMW DTC P1165 causes
The possible causes of DTC P1165 on a BMW can include a faulty charge air temperature sensor, issues with the wiring or connectors related to the sensor, or problems with the engine control module (ECM) that is responsible for monitoring and controlling the charge air temperature.
BMW DTC P1165 seriousness
While DTC P1165 may not cause immediate harm to the vehicle, it can lead to decreased engine performance and efficiency. Ignoring this issue can potentially result in further damage to engine components over time.
How to diagnose DTC P1165 on BMW
To diagnose DTC P1165 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the charge air temperature sensor and its related components. Testing the sensor’s resistance and checking for any wiring issues would be part of the diagnostic process.
How to fix DTC P1165 on BMW
Fixing DTC P1165 on a BMW may involve replacing the faulty charge air temperature sensor, repairing any damaged wiring or connectors, or addressing any issues with the engine control module. Once the root cause of the problem is identified and resolved, the fault code should be cleared from the system.
How to erase DTC P1165 on BMW
To erase DTC P1165 on a BMW, a diagnostic scanner can be used to clear the fault code from the engine control module’s memory. After the repair has been completed and the issue resolved, the fault code should be erased to reset the system and ensure that the check engine light does not reappear.
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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