BMW DTC P1373 – Ionic Current Signal Amplification Control Circuit Low (Bank 2)
DTC P1373 meaning on BMW
DTC P1373 on a BMW refers to the Ionic Current Signal Amplification Control Circuit Low in Bank 2. This diagnostic trouble code indicates that there is a low voltage condition in the circuit responsible for amplifying the ionic current signal in the second bank of the engine.
BMW DTC P1373 symptoms
Symptoms of BMW DTC P1373 may include:
- Check Engine Light illuminated
- Engine running rough
- Reduced engine performance
- Possible misfires
BMW DTC P1373 causes
Common causes of BMW DTC P1373 include:
- Faulty ionic current sensor
- Wiring or connection issues in the circuit
- Defective control module
BMW DTC P1373 seriousness
While BMW DTC P1373 may not always result in immediate drivability issues, it is important to address this code promptly to prevent potential engine performance problems and further damage.
How to diagnose DTC P1373 on BMW
To diagnose BMW DTC P1373, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the wiring and connections in the circuit
- Test the ionic current sensor for proper operation
- Check the control module for any faults
How to fix DTC P1373 on BMW
To fix BMW DTC P1373, the following steps may be taken:
- Replace the faulty ionic current sensor
- Repair any damaged wiring or connections in the circuit
- If the control module is defective, replace it
How to erase DTC P1373 on BMW
After addressing the underlying issue causing BMW DTC P1373, the fault code can be cleared using a diagnostic scanner. This will reset the Check Engine Light and erase the trouble code from the vehicle’s memory.
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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