P1494 — EVAP Leak Detection Pump (LDP) Pressure Switch Condition
SAFEIs it safe to drive? Generally OK to keep driving — fix it at your convenience.
What P1494 means
This is a manufacturer-specific code — its meaning depends on the vehicle’s make (see below).
What P1494 means on specific makes
Dodge / Jeep / Ram / Chrysler SAFE
Chrysler's LDP-based EVAP system: the leak-detection pump pressure switch didn't change state as expected when the pump was commanded. Usually a fault in the LDP itself or its hoses. Emissions-only; drives fine.
- Failed leak detection pump ($60-200)
- Cracked/disconnected LDP hose ($5-40)
- Bad/loose gas cap ($10-30)
- Wiring fault ($20-100)
Check first: Inspect the LDP and its hoses (driver-side, near the steering gear cradle on minivans); test the pump's switch operation.
Source: TroubleCodes.net P1494 / AutoCodes