BMW DTC P1476 – Leakage Diagnostic Pump Clamped Tube (M52 MY99/00: Leakage Diagnostic Pump Reed Switch Circuit)
DTC P1476 meaning on BMW
DTC P1476 on a BMW refers to the Leakage Diagnostic Pump Clamped Tube (M52 MY99/00: Leakage Diagnostic Pump Reed Switch Circuit) fault. This diagnostic trouble code indicates an issue with the reed switch circuit of the leakage diagnostic pump in the vehicle’s evaporative emission control system.
BMW DTC P1476 symptoms
Symptoms of BMW DTC P1476 may include:
- Check Engine Light (MIL) illuminated
- Increased fuel consumption
- Reduced engine performance
- Visible fuel leaks
BMW DTC P1476 causes
Common causes of BMW DTC P1476 include:
- Leaking or damaged clamped tube in the evaporative emission system
- Faulty reed switch in the leakage diagnostic pump
- Wiring or connection issues in the reed switch circuit
BMW DTC P1476 seriousness
While BMW DTC P1476 may not cause immediate drivability issues, it is important to address this fault promptly to prevent potential fuel leaks and ensure proper operation of the vehicle’s emission control system.
How to diagnose DTC P1476 on BMW
To diagnose BMW DTC P1476, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the clamped tube and reed switch in the leakage diagnostic pump for any visible damage or leaks
- Check the wiring and connections in the reed switch circuit for continuity and proper operation
How to fix DTC P1476 on BMW
To fix BMW DTC P1476, the following steps may be taken:
- Replace the clamped tube if it is leaking or damaged
- Replace the leakage diagnostic pump if the reed switch is faulty
- Repair any wiring or connection issues in the reed switch circuit
How to erase DTC P1476 on BMW
To erase DTC P1476 on a BMW, a mechanic can use a diagnostic scanner to clear the fault code after the underlying issue has been addressed and repaired. Once the fault code is cleared, the Check Engine Light should turn off.
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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