P0101 is set when Air mass ratio(real/threshold) above threshold value or below threshold value is detected or short to battery or ground in MAFS or IATS signal circuit is detected or short to low or high voltage line in IATS signal circuit is detected.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Monitoring intake air flow sensor signal | 1. Mass intake air temperature signal is shorted to power or ground 2. EGR system leaked or stuck 3. Faulty mass intake air temperature | |
Enable Conditions |
•
Engind "ON" | ||
Threshold Value | Case 1 |
•
Output signal greater than max. threshold. (ratio of actual amount of air/theoretical air is greater than threshold)
•
Output signal less than min. threshold. (ratio of actual amount of air/theoretical air is less than threshold) | |
Case 2 |
•
Amount of air correction temperature signal high or low
•
Mass intake air temperature signal is shorted to power or ground. | ||
Diagnostic Time | Case 1 |
•
7sec | |
Case 2 |
•
1sec | ||
Fail Safe | Fuel Cut |
•
NO | |
EGR Off |
•
YES | ||
Fuel Limit |
•
NO (case 1)
•
NO (case 2) | ||
Check Lamp |
•
ON | ||
