BMW DTC P1441 – Leakage Diagnostic Pump Control Circuit/Open
DTC P1441 meaning on BMW
DTC P1441 on a BMW indicates a fault in the Leakage Diagnostic Pump Control Circuit/Open. This code is triggered when the Engine Control Module (ECM) detects an open circuit or malfunction in the control circuit of the leakage diagnostic pump.
BMW DTC P1441 symptoms
Symptoms of DTC P1441 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Increased fuel consumption
- Reduced engine performance
- Failed emissions test
BMW DTC P1441 causes
Common causes of DTC P1441 on a BMW include:
- Faulty leakage diagnostic pump
- Open or short circuit in the control wiring
- Defective Engine Control Module (ECM)
BMW DTC P1441 seriousness
While DTC P1441 may not cause immediate drivability issues, it can lead to increased emissions and reduced fuel efficiency. Ignoring this fault can result in the vehicle failing emissions tests and potential long-term damage to the engine components.
How to diagnose DTC P1441 on BMW
To diagnose DTC P1441 on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the ECM.
- Inspect the leakage diagnostic pump and its wiring for any visible damage or corrosion.
- Check the control circuit for continuity and proper voltage levels.
- If necessary, perform a smoke test to detect leaks in the evaporative emission system.
How to fix DTC P1441 on BMW
To fix DTC P1441 on a BMW, consider the following steps:
- Replace the faulty leakage diagnostic pump if it is found to be defective.
- Repair any open or short circuits in the control wiring.
- If the ECM is determined to be faulty, replace it with a new unit.
- Clear the fault codes from the ECM memory after completing the repairs.
How to erase DTC P1441 on BMW
To erase DTC P1441 on a BMW, use a diagnostic scanner to clear the fault codes stored in the ECM. Ensure that the underlying issue causing the fault code has been addressed and resolved before clearing the codes. Once the repairs are completed, follow the scanner’s instructions to erase the DTC P1441 code.
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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