P1374 – BMW DTC

BMW DTC P1374 – Ionic Current Signal Amplification Control Circuit High (Bank 2)

DTC P1374 meaning on BMW

The Diagnostic Trouble Code (DTC) P1374 for BMW refers to the Ionic Current Signal Amplification Control Circuit High on Bank 2. This code indicates that there is a high voltage condition detected in the circuit responsible for amplifying the ionic current signal on Bank 2 of the engine.

BMW DTC P1374 symptoms

Symptoms associated with BMW DTC P1374 may include:

• Check Engine Light (MIL) illuminated on the dashboard
• Engine running rough or misfiring
• Reduced engine performance
• Possible stalling or difficulty starting the engine

BMW DTC P1374 causes

Common causes of BMW DTC P1374 include:

• Faulty ionic current signal amplifier
• Wiring or connection issues in the circuit
• Corrosion or poor contact in the circuit components
• Internal engine issues affecting the ionic current signal

BMW DTC P1374 seriousness

While BMW DTC P1374 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. Ignoring this code could lead to more severe issues over time.

How to diagnose DTC P1374 on BMW

To diagnose BMW DTC P1374, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related data
2. Inspect the wiring and connections in the ionic current signal amplification circuit
3. Test the ionic current signal amplifier for proper function
4. Check for any other related engine issues that could be affecting the circuit

How to fix DTC P1374 on BMW

To fix BMW DTC P1374, the following steps may be taken:

1. Repair or replace any damaged wiring or connectors in the circuit
2. Replace the faulty ionic current signal amplifier if necessary
3. Clean or repair any corrosion or poor contacts in the circuit components
4. Address any underlying engine issues that may be affecting the ionic current signal

How to erase DTC P1374 on BMW

To erase BMW DTC P1374, the fault code can be cleared using a diagnostic scanner. After the necessary repairs have been made to address the underlying issue causing the code, the code can be cleared to reset the Check Engine Light and monitor the system for any recurring problems.

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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