BMW DTC P1398 – Internal Ionic Current Control Module Error (Bank 1)
DTC P1398 meaning on BMW
The Diagnostic Trouble Code (DTC) P1398 for BMW indicates an Internal Ionic Current Control Module Error on Bank 1. This error code is specific to BMW vehicles and relates to a fault in the ionic current control module on the first bank of the engine.
BMW DTC P1398 symptoms
Symptoms of DTC P1398 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Engine running rough or misfiring
- Reduced engine performance
- Increased fuel consumption
BMW DTC P1398 causes
The Internal Ionic Current Control Module Error (Bank 1) with DTC P1398 on a BMW can be caused by various factors, including:
- Faulty ionic current control module
- Wiring or connection issues related to the module
- Software or programming errors
BMW DTC P1398 seriousness
The seriousness of DTC P1398 on a BMW lies in the potential impact on engine performance and emissions. Ignoring this fault code can lead to further engine problems and decreased fuel efficiency. It is recommended to address this issue promptly to prevent any long-term damage.
How to diagnose DTC P1398 on BMW
To diagnose DTC P1398 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the ionic current control module and associated wiring for any visible damage
- Check for software updates or reprogramming options from BMW
How to fix DTC P1398 on BMW
Fixing DTC P1398 on a BMW may involve the following actions:
- Replace the faulty ionic current control module
- Repair any damaged wiring or connections
- Update the software or reprogram the module as per manufacturer recommendations
How to erase DTC P1398 on BMW
To erase DTC P1398 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After addressing the underlying issue causing the error code, clearing it from the system will reset the Check Engine Light and ensure proper operation.
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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