Source-backed diagnostic reference

P1477 EV diagnostic code

Leakage Diagnostic Pump Reed Switch Did Not Open

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

BMW: Leakage Diagnostic Pump Reed Switch Did Not Open Source
DODGE: Too Much Secondary Air Source
JEEP: Too Much Secondary Air Source
OTHER: Additional Fan Relay Circuit Malfunction Source
VOLKSWAGEN: EVAP Emission Control System LDP Malfunction Source

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