PID 43%
Absolute load value
Absolute engine load.
What is normal
Usually below 20 % at idle; at full throttle a naturally aspirated engine approaches 100 %.
These figures hold for most cars, but the maker has the last word: some engines run hotter or idle higher by design.
Step by stepFuel use went up — where to start
How it feels behind the wheel
The same fault shows itself in different ways. Each sign below says what to look at in the live data.
The revs are capped and the car will not accelerateThe pedal is flat to the floor but the engine caps out around three thousand and goes no further. The car moves, but sluggishly, and overtaking is impossible. The check light is often on.Fuel consumption has gone upYou refuel noticeably more often for the same driving. The lamp is usually off — the unit thinks it is coping.It jerks under accelerationAt steady throttle everything is fine, but under acceleration the car jerks or hesitates, as if the pedal was released for a moment.The car has lost powerThe car moves, but sluggishly: flooring the throttle changes nothing, the revs climb reluctantly. Often the lamp is on as well.
How to see it
In CarScan: the Live data tab, «Start polling». The app asks the car several times per second, draws a graph and remembers the highest and lowest value of the trip.