BMW DTC P1394 – Ionic Current Voltage Selection Circuit High
DTC P1394 meaning on BMW
The Diagnostic Trouble Code (DTC) P1394 for BMW refers to the Ionic Current Voltage Selection Circuit High. This code indicates that there is a high voltage condition detected in the ionic current circuit of the vehicle.
BMW DTC P1394 symptoms
Symptoms of DTC P1394 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Engine running rough or misfiring
- Reduced engine performance
- Possible stalling or difficulty starting the engine
BMW DTC P1394 causes
Common causes of DTC P1394 on a BMW include:
- Faulty ionic current module
- Wiring or connection issues in the ionic current circuit
- Corrosion or damage to the circuit components
- Software or programming issues
BMW DTC P1394 seriousness
The seriousness of DTC P1394 on a BMW can vary. While the vehicle may still be operable with this code present, it is important to address the underlying issue to prevent potential damage to the engine or other components.
How to diagnose DTC P1394 on BMW
To diagnose DTC P1394 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
- Inspect the ionic current circuit components for any visible damage or corrosion
- Test the ionic current module and related wiring for proper functionality
- Check for any software updates or reprogramming needed
How to fix DTC P1394 on BMW
To fix DTC P1394 on a BMW, the following steps may be taken:
- Replace the faulty ionic current module if necessary
- Repair any damaged wiring or connections in the circuit
- Clean or replace any corroded components
- Perform any required software updates or reprogramming
How to erase DTC P1394 on BMW
To erase DTC P1394 on a BMW, the fault codes can be cleared using a diagnostic scanner. After addressing the underlying issue causing the code, the codes can be cleared to reset the Check Engine Light and monitor the vehicle for any recurring issues.
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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