BMW DTC P1190 – Pre Catalyst Fuel Trim System (Bank 1)
DTC P1190 meaning on BMW
The DTC P1190 on a BMW indicates an issue with the Pre Catalyst Fuel Trim System in Bank 1. This fault code is triggered when the engine control module detects that the fuel mixture is too lean or too rich in the pre-catalytic converter area of the exhaust system.
BMW DTC P1190 symptoms
Symptoms of the DTC P1190 on a BMW may include:
- Check Engine Light illuminated
- Decreased fuel efficiency
- Engine running rough or misfiring
- Reduced engine performance
BMW DTC P1190 causes
The common causes of the DTC P1190 on a BMW include:
- Vacuum leaks
- Faulty oxygen sensor
- Fuel pressure regulator issues
- Dirty or clogged fuel injectors
- Exhaust system leaks
BMW DTC P1190 seriousness
Ignoring the DTC P1190 on a BMW can lead to potential engine damage and decreased fuel efficiency. It is important to address this issue promptly to prevent further complications.
How to diagnose DTC P1190 on BMW
To diagnose the DTC P1190 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the pre-catalytic converter area for leaks or damage
- Check the oxygen sensor readings and fuel trims
- Test the fuel pressure and injector operation
How to fix DTC P1190 on BMW
To fix the DTC P1190 on a BMW, the following steps may be taken:
- Repair any vacuum leaks in the intake system
- Replace a faulty oxygen sensor if necessary
- Clean or replace clogged fuel injectors
- Inspect and repair any exhaust system leaks
- Reset the engine control module and monitor for recurrence
How to erase DTC P1190 on BMW
To erase the DTC P1190 on a BMW, a diagnostic scanner can be used to clear the fault code from the engine control module’s memory. After the repair has been completed, the code can be erased to reset the Check Engine Light.
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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