P0128 error

2004 ISUZU ASCENDER
103,000 MILES
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SACHELI
  • MEMBER
  • 1 POST
Receiving P0128 error code for check engoine light but there are no issues with the vehicle running, coolant, fan, or temperature issues. Any ideas? And how easy is this to fix on my 2004 Ascender?
Apr 13, 2013 at 2:48 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
That means the engine isn't heating to the correct temperature and probably needs a new thermostat.
Apr 13, 2013 at 3:05 AM
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