LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.0L) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P050A: Cold Start Idle Control System Performance >> Execution Condition
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Execution Condition

EXECUTION CONDITION - IDLE SPEED DIAGNOSIS

Secondary parameters Execution condition DTC
Battery voltage ≥ 10.9 V P050A
Barometric pressure ≥ 75.06 kPa (563 mmHg, 22.2 inHg)  
Vehicle speed ≤ 1.9 km/h (1.2 MPH)  
Throttle position < 0.312%  
Integrated value of intake air amount < Value of Map 1  
Time of no change in park/neutral position switch ≥ 3000 ms  
Elapsed time after starting the engine ≥ 2000 ms  
EXECUTION CONDITION (FINAL IGNITION TIMING DIAGNOSIS - IDLE)

Secondary parameters Execution condition DTC
Battery voltage ≥ 10.9 V P050B
Barometric pressure ≥ 75.06 kPa (563 mmHg, 22.2 inHg)  
Throttle position < 0.312%  
Integrated value of intake air amount < Value of Map 1  
Time of no change in park/neutral position switch > 3000 ms  
Target retard amount ≥ 8.5°CA  
EXECUTION CONDITION (FINAL IGNITION TIMING DIAGNOSIS, NON-IDLE)

Secondary parameters Execution condition DTC
Battery voltage ≥ 10.9 V P050B
Barometric pressure ≥ 75.06 kPa (563 mmHg, 22.2 inHg)  
Integrated value of intake air amount < Value of Map 2  
Target retard amount ≥ 8.5°CA  
MAP 1 SPECIFICATION (CVT MODEL)

Engine coolant temperature at engine starting (°C (°F)) -40 (-40) -20 (-4) 0 (32) 10 (50) 20 (68) 30 (86) 40 (104) 50 (122)
Integrated value of intake air amount (g (oz)) 1133 (40) 1133 40) 1133 40) 1133 40) 1133 40) 1067 (37.6) 973 (34.3) 877 (30.9)
Engine coolant temperature at engine starting (°C (°F)) 60 (140) 70 (158) 75 (167) 80 (176) 90 (194) 100 (212) 110 (230)
Integrated value of intake air amount (g (oz)) 783 (27.6) 687 (24.2) 633 (22.3) 593 (20.9) 500 (17.6) 0 (0) 0 (0)
MAP 1 SPECIFICATION (MT MODEL)

Engine coolant temperature at engine starting (°C (°F)) -40 (-40) -30 (-22) -20 (-4) -10 (-14) 0 (32) 10 (50) 20 (68) 30 (86)
Integrated value of intake air amount (g (oz)) 745 (26.3) 731 (25.8) 687 (24.2) 687 (24.2) 536 (18.9) 500 (17.6) 500 (17.6) 482 (17)
Engine coolant temperature at engine starting (°C (°F)) 40 (104) 50 (122) 60 (140) 70 (158) 75 (167)
Integrated value of intake air amount (g (oz)) 482 (17) 463 (16.3) 463 (16.3) 447 (15.8) 447 (15.8)
MAP 2 SPECIFICATION

Engine coolant temperature at engine starting (°C (°F)) -40 (-40) -30 (-22) -20 (-4) -10 (-14) 0 (32) 10 (50) 20 (68) 30 (86)
Integrated value of intake air amount (g (oz)) 1133 (40) 1133 (40) 1133 (40) 1133 (40) 1133 (40) 1133 (40) 1133 (40) 1067 (37.6)
Engine coolant temperature at engine starting (°C (°F)) 40 (104) 50 (122) 60 (140) 70 (158) 80 (176) 90 (194) 100 (212) 110 (230)
Integrated value of intake air amount (g (oz)) 973 (34.3) 877 (30.9) 783 (27.6) 687 (24.2) 593 (20.9) 500 (17.6) 0 (0) 0 (0)