Saab 9000 - Page 119

116 Fault diagnosis
Diagnostic trouble code P0125
Coolant temperature, slow increase
Km/h
20
-----10
Min----.,••
Symptom of fault
+30°F
-1°C
The CHECK ENGINE lamp (MIL) is on.
Conditions
Engine running
Vehicle speed
>
12 mph
(>
20 km/h)
The coolant temperature does not rise by 20° C
(36° F) from starting temperature or reach 40° C
(104° F) within 6 minutes and 40 seconds.
Diagnostic help
+50°F
+10°C
The diagnostic trouble code may be generated as a
result of:
• connection of a non-approved external parking
heater
• ice formation in the cooling system
• a fault in the coolant temperature sensor or its circuit
• a defective thermostat.
Saab 9000