ECU shows P050A when the RPM is lower or higher than 1,450(target RPM) immediately after cold start.
Item | Detecting Condition | Possible Cause | |
DTC Strategy | Case 1 |
•
Engine speed is below the target while ISC torque is at the maximum during catalyst heating phase | 1. Intake system for blockage |
Case 2 |
•
Engine speed is above the target while ISC torque is at the minimum during catalyst heating phase | ||
Case 3 |
•
Fuel cut-off during stand-still, idle condition and catalyst heating phase | ||
Enable Conditions |
•
Vehicle speed = 0 mph
•
ECT at engine start > -10.5℃ (13.1℉)
•
Intake air temperature > -10.5℃ (13.1℉)
•
Accel. Pedal = 0%
•
BARO > 74.5 kPa
•
Catalyst heating = On (-10 ℃ < ECT < 32 ℃) | ||
Threshold value | Case 1 |
•
Desired engine speed – Engine speed > 100 rpm | |
Case 2 |
•
Actual engine speed – Desired engine speed > 200rpm | ||
Case 3 |
•
Fuel cut-off ≥ 3 times | ||
Diagnostic Time |
•
8sec | ||
MIL ON Condition |
•
2 Driving Cycle | ||
