BMW DTC P1559 – Cold Start Monitoring Integrated Moment Reserve not Reached
DTC P1559 meaning on BMW
DTC P1559 on a BMW refers to the ¨Cold Start Monitoring Integrated Moment Reserve not Reached¨ fault code. This code indicates that the engine control module (ECM) has detected an issue with the integrated moment reserve not being reached during cold start monitoring.
BMW DTC P1559 symptoms
Symptoms of DTC P1559 on a BMW may include:
- Hard starting
- Rough idle during cold starts
- Reduced engine performance
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P1559 causes
The possible causes of DTC P1559 on a BMW include:
- Faulty intake air temperature sensor
- Issues with the engine coolant temperature sensor
- Problems with the fuel system
- Malfunctioning throttle body
BMW DTC P1559 seriousness
While DTC P1559 may not always result in immediate drivability issues, it is important to address this fault code promptly to prevent potential long-term damage to the engine and emissions system. Ignoring the issue could lead to decreased fuel efficiency and overall performance.
How to diagnose DTC P1559 on BMW
To diagnose DTC P1559 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the intake air temperature sensor and engine coolant temperature sensor for proper operation
- Check the fuel system components for any issues
- Inspect the throttle body for proper functioning
How to fix DTC P1559 on BMW
To fix DTC P1559 on a BMW, the following steps may be taken:
- Replace the faulty intake air temperature sensor or engine coolant temperature sensor
- Clean or replace any clogged fuel system components
- Repair or replace a malfunctioning throttle body
- Clear the fault code and reset the ECM
How to erase DTC P1559 on BMW
To erase DTC P1559 on a BMW, the fault code can be cleared using a diagnostic scanner. After addressing the underlying issue that caused the fault code, the ECM can be reset to clear the code from the system. This should be done following the repair and verification that the issue has been resolved.