Diagnostic Aids

To help locate intermittent leaks, use Evaporative Emissions System Tester (EEST - J 41413-200), or equivalent, to introduce smoke into EVAP system. Move all EVAP components while observing smoke with High Intensity White Light (J 41413-SPT), or equivalent.
To improve the visibility of smoke exiting the EVAP system, observe the suspected leak area from different angles using the High Intensity White Light.
A temporary blockage in EVAP purge solenoid, purge pipe or EVAP canister could cause an intermittent condition. Check and repair any restriction in EVAP system.
Operating vehicle in CHECK MODE will increase the ability of the PCM to detect engine control system malfunctions. See SERVICE BAY TESTS under SELF-DIAGNOSTIC SYSTEM.
For intermittent conditions, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 1.8L VIBE article.
If the DTC cannot be duplicated, information included in freeze frame data can be useful in determining vehicle operating conditions when DTC was first set.