DTC B2563 Dodge
EVAP Control System Incorrect Purge Flow
EVAP Control System Incorrect Purge Flow
Description
ECT sensor is cold during startup, engine started, battery voltage must be at least 11.5v, all electrical components must be off. The coolant temperature is less than 60 degrees Celsius, and the ambient pressure is greater than 76.2994kPa. The air intake temperature at start is between 9.04 and 16.04 degrees Celsius. The change in barometric pressure since engine start is less than 0.9998kPa. The vehicle speed is less than 74.56mph, and the purge valve has opened enough on previous driving cycle. The DME detected the switch rate of the rear HO2S-12 was close to the switch rate of front HO2S (it should be much slower). DME detected a problem in the EVAP system during the EVAP System Monitor test.
Cause and Solution
EVAP canister purge valve is damaged EVAP canister has an improper seal Vapor line between purge solenoid and intake manifold vacuum reservoir is damaged, or vapor line between EVAP canister purge solenoid and charcoal canister is damaged Vapor line between charcoal canister and check valve, or vapor line between check valve and fuel vapor valves is damaged
Video Guide
Diagnostic Info
- DTC Code: B2563
- Brand: Dodge