Terms memorize DTC

The efficiency of the catalytic converter is determined by comparing the signals of the front and rear oxygen sensors. ECU memorizes the fault code and includes a warning light engine management system, if the signals front and rear sensors in two cycles of driving the same for 60% of the time two or four 170-second test period. Verification is performed under the following conditions:

- ECU operates in a closed loop control;

- The engine speed is within the 1800-2300 ^min -1;

- Temperature of the catalyst above 372 ?� C;

- RCO purge solenoid valve greater than 0.9;

- There is no shift;

- The engine load is in the range 1,4-4,5 ms.

The output of the code indicates that the signals of the front and rear oxygen sensors picked low efficiency of the catalytic converter exhaust gases.