Error code

OBD2 P0445

OBD2P0445
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Evaporative Emission System Purge Control Valve Circuit Shorted.

Severity

moderateCan drive but may experience rough engine operation and increased fuel consumption.

Summary

P0445 indicates a short circuit in the evaporative emission (EVAP) canister purge valve control circuit. This code is related to issues with wiring and connectors, or problems with the purge valve itself.

Symptoms

  • No symptoms other than a stored trouble code and an illuminated warning light
  • Strong odor of fuel
  • Deteriorated idle quality, rough engine operation at some throttle settings, or unpredictable stalling
  • Increased fuel consumption

Common Causes

  • Damaged, burnt, shorted, or corroded wiring and/or connectors
  • Open circuits
  • Purge valve stuck in the open position
  • Failed or failing PCM (rare)

Diagnosis

  1. Record all codes present, including freeze frame data.
  2. Inspect wiring for damage; repair as needed.
  3. Perform input voltage, ground, continuity, and resistance checks on associated wiring.
  4. Test the purge valve's internal resistance and operation.
  5. Reassemble EVAP system after repairs and test.

Fixes

  • Repair or replace damaged wiring and connectors
  • Replace defective purge valve if necessary

FAQ

What does P0445 mean?

P0445 indicates a short circuit in the EVAP canister purge valve control circuit.

How do I diagnose P0445?

Diagnose by inspecting wiring and connectors, performing electrical tests on the purge valve, and checking for proper operation of the valve.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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