BMW DTC P2190 – Fuel Control System ‘A’ Too Rich at Idle (Bank 2)
DTC P2190 meaning on BMW
The Diagnostic Trouble Code (DTC) P2190 for BMW indicates that the Fuel Control System ‘A’ is too rich at idle on Bank 2. This means that the engine control module (ECM) has detected that the air-fuel mixture is too rich when the vehicle is idling, specifically on the bank of cylinders labeled as Bank 2.
BMW DTC P2190 symptoms
Symptoms of DTC P2190 on a BMW may include:
- Decreased fuel efficiency
- Rough idling
- Engine hesitation or stalling
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P2190 causes
The possible causes of DTC P2190 on a BMW can include:
- Faulty oxygen sensor
- Leaking fuel injectors
- Dirty or clogged air filter
- Issues with the fuel pressure regulator
- Vacuum leaks in the intake system
BMW DTC P2190 seriousness
While DTC P2190 may not cause immediate harm to the engine, it can lead to decreased fuel efficiency and performance issues if left unresolved. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P2190 on BMW
To diagnose DTC P2190 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes and data from the ECM
- Inspect the oxygen sensor readings to determine if they are within specifications
- Check for any fuel leaks or injector issues
- Inspect the air filter and intake system for any obstructions or leaks
- Perform a smoke test to identify any vacuum leaks
How to fix DTC P2190 on BMW
To fix DTC P2190 on a BMW, the following steps may be taken:
- Replace any faulty oxygen sensors
- Clean or replace clogged air filters
- Repair or replace leaking fuel injectors
- Address any vacuum leaks in the intake system
- Ensure the fuel pressure regulator is functioning correctly
How to erase DTC P2190 on BMW
After fixing the underlying issue causing DTC P2190 on a BMW, the fault codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and allow the vehicle’s ECM 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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