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Home >> Subaru >> 2006 >> Baja Turbo, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0125 - Insufficient Coolant Temperature For Closed Loop Fuel Control - >> Diagnostic Method

Diagnostic Method

WARNING: This page is about a different variant/trim than selected.

Judge NG when the malfunction criteria below are completed. Judge OK and clear NG when the engine coolant temperature is more than 20°C (68°F) or more.

Judgment Value 

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Output voltage ≤ 0.38 V
Timer after starting the engine except fuel cut
  1. Timer OFF of fuel cut mode.
  2. The timer is counted more than 50ms + TWCNT milliseconds per 50 milliseconds under driving condition without above. TWCNT is determined as following.
    • Idle switch ON: TWCNT = 0
    • Idle switch OFF: Refer to Map 1
 ≥ Judgment time

Map 1 

VEHICLE SPEED

  Vehicle speed 10km/h(6 MPH) Vehicle speed 24km/h(15 MPH) Vehicle speed 40 km/h (25 MPH) Vehicle speed 56 km/h (35 MPH)
Temperature -20°C (-4°F) 0 ms 5 ms 10 ms 20 ms
Temperature -7°C (19°F) 0 ms 30 ms 60 ms 60 ms
Temperature 10°C (50°F) 0 ms 90 ms 180 ms 180 ms
Temperature 20°C (68°F) 0 ms 90 ms 180 ms 180 ms

Judgment time: Find from minimum engine coolant temperature. 

MINIMUM ENGINE COOLANT TEMPERATURE

Minimum engine coolant temperature °C (°F) -30 (-22) 0 (32) 30 (86) 60 (140) 64.25 (147.65)
Judgment time (second) 630.05 429.5 228.95 28.4 0

Time Needed for Diagnosis  : Change at minimum engine coolant temperature.

Malfunction Indicator Light Illumination  : Illuminates when malfunction occurs in 2 continuous driving cycles.

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