service engine soon light is on, had a diagnostic run on vehicle and these two codes showed up, how much of a problem are they
Dec 13, 2009 at 12:42 PM
2002 Suzuki XL7 po717,po128
2002 SUZUKI XL7
TOM GOULD
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- 1 POST
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This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
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DTC P0128: COOLANT THERMOSTAT MALFUNCTION
Condition
DTC P0128 is set when engine coolant temperature is less than 167°F (75°C) after engine has run for a specified time. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles.
Possible Causes
Possible causes are:
Thermostat malfunction.
ECT sensor malfunction.
ECM malfunction.
P0717 (4) Input/Turbine Speed Sensor Circuit - No Signal
Condition
DTC P0128 is set when engine coolant temperature is less than 167°F (75°C) after engine has run for a specified time. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles.
Possible Causes
Possible causes are:
Thermostat malfunction.
ECT sensor malfunction.
ECM malfunction.
P0717 (4) Input/Turbine Speed Sensor Circuit - No Signal
Apr 30, 2010 at 4:24 AM
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