BMW DTC P1471 – Leakage Diagnostic Pump Control Circuit/Open
DTC P1471 meaning on BMW
The DTC P1471 for BMW refers to a fault in the Leakage Diagnostic Pump Control Circuit, indicating an open circuit condition. This fault code is related to the vehicle’s evaporative emission control system, which is responsible for capturing and storing fuel vapors to prevent them from escaping into the atmosphere.
BMW DTC P1471 symptoms
Symptoms of DTC P1471 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Decreased fuel efficiency
- Increased emissions
- Engine performance issues
BMW DTC P1471 causes
The common causes of DTC P1471 on a BMW include:
- Faulty Leakage Diagnostic Pump
- Open or short circuit in the control circuit
- Wiring harness issues
- Connector problems
BMW DTC P1471 seriousness
While DTC P1471 may not cause immediate drivability issues, it is important to address this fault code promptly. Ignoring this fault can lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the vehicle’s emission control system.
How to diagnose DTC P1471 on BMW
To diagnose DTC P1471 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the Leakage Diagnostic Pump and its wiring for any visible damage
- Check the control circuit for continuity and proper voltage
- Inspect connectors for corrosion or loose connections
How to fix DTC P1471 on BMW
To fix DTC P1471 on a BMW, you can perform the following steps:
- Replace the faulty Leakage Diagnostic Pump if necessary
- Repair any open or short circuits in the control circuit
- Repair or replace damaged wiring harnesses
- Clean or replace connectors as needed
How to erase DTC P1471 on BMW
To erase DTC P1471 on a BMW, you can use a diagnostic scanner to clear the fault code. After performing the necessary repairs, you can reset the Check Engine Light and erase the fault code to ensure the issue has been resolved.
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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