BMW DTC P1246 – Charge Air Temperature Sensor Circuit Low
DTC P1246 meaning on BMW
The DTC P1246 on a BMW indicates a fault with the Charge Air Temperature Sensor Circuit, specifically reporting a low voltage condition. This sensor is responsible for measuring the temperature of the air entering the engine for proper fuel delivery and combustion.
BMW DTC P1246 symptoms
Symptoms of DTC P1246 on a BMW may include reduced engine performance, rough idling, decreased fuel efficiency, and potentially an illuminated check engine light on the dashboard.
BMW DTC P1246 causes
The common causes of DTC P1246 on a BMW include a faulty charge air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor’s internal circuitry.
BMW DTC P1246 seriousness
While the vehicle may still be operable with DTC P1246, it is important to address this issue promptly to prevent potential engine damage and ensure optimal performance and fuel efficiency.
How to diagnose DTC P1246 on BMW
To diagnose DTC P1246 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, its wiring, and connectors. Testing the sensor’s resistance and voltage output may also be necessary.
How to fix DTC P1246 on BMW
Fixing DTC P1246 on a BMW usually involves replacing the faulty charge air temperature sensor. Additionally, repairing any damaged wiring or connectors in the sensor circuit may be necessary to ensure proper functionality.
How to erase DTC P1246 on BMW
Once the underlying issue causing DTC P1246 on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. This will reset the check engine light and allow the vehicle’s onboard computer 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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