2002 Suzuki XL7 po717,po128

2002 SUZUKI XL7
82,762 MILES • 6 CYL • 4WD • AUTOMATIC
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TOM GOULD
  • MEMBER
  • 1 POST
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 4:42 AM
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DAVE H
  • ✓Experienced Mechanic
  • 13,384 POSTS
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
Apr 29, 2010 at 9:24 PM
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