BMW DTC P1590 – Throttle Valve 2 Potentiometer 1/2 Circuit Low
DTC P1590 meaning on BMW
DTC P1590 for BMW refers to an issue with the Throttle Valve 2 Potentiometer 1/2 Circuit being detected as low. This means that the signal voltage from the throttle valve position sensor is below the expected range, indicating a potential problem with the throttle valve system.
BMW DTC P1590 symptoms
Symptoms of DTC P1590 on a BMW may include:
- Reduced engine power
- Engine stalling or hesitation
- Check Engine Light (CEL) illuminated on the dashboard
- Poor acceleration response
BMW DTC P1590 causes
Common causes of DTC P1590 on a BMW include:
- Faulty throttle valve position sensor
- Wiring or connector issues in the throttle valve circuit
- Throttle valve sticking or binding
- Electronic control module (ECM) malfunction
BMW DTC P1590 seriousness
DTC P1590 should be addressed promptly as it can lead to drivability issues and potential safety concerns. Ignoring this fault may result in further damage to the engine or other components of the vehicle.
How to diagnose DTC P1590 on BMW
To diagnose DTC P1590 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the throttle valve position sensor and its wiring for any visible damage
- Check the throttle valve for smooth operation and proper alignment
- Test the throttle valve position sensor using a multimeter to verify its functionality
How to fix DTC P1590 on BMW
To fix DTC P1590 on a BMW, you can try the following solutions:
- Replace the faulty throttle valve position sensor
- Repair any damaged wiring or connectors in the throttle valve circuit
- Clean and lubricate the throttle valve to ensure smooth operation
- If necessary, reprogram or replace the electronic control module (ECM)
How to erase DTC P1590 on BMW
To erase DTC P1590 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After addressing the underlying issue causing the fault code, you can reset the ECM and verify that the code has been successfully erased.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.