DTC Set Conditions

Test Conditions: Electrical Noise - Throttle valve closed. Vehicle speed is 0.9 MPH (1.5 KM/H) or less.

NOTE: If the number of sudden pressure fluctuations does not reach twenty during one engine idling, the counter will be reset to zero. If the ignition switch is turned off, it will also be reset to zero.

NOTE: The conditions for deviating from idling operation are as follows:

Engine speed is higher than 2,500 RPM.
Vehicle speed is 9.3 MPH (15 KM/H) or more.
Volumetric efficiency is 55% or more.

Judgement Criteria - The event that the output voltage from the fuel tank differential pressure sensor changes by 0.2 volts or more (i.e. sudden pressure fluctuation) is counted at least twenty times during one engine idling, and then consecutively eight times during normal driving conditions.