2001 Nissan Xterra P1126 Emissions Diagnostic Error

2001 NISSAN XTERRA
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MJBEDDOES
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2001 Nissan Xterra 6 cyl Four Wheel Drive Automatic

Can you tell me what the P1126 diagnostic code is and also what I need to do about it.

Thanks,

Mike Beddoes
Jan 17, 2009 at 1:19 PM
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BLUELIGHTNIN6
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Hello
Thanks for the donation.


Code P1126 indicates a fault with the thermostat function. This code sets when engine coolant temperature does not reach a specified temperature, even though engine has been running for a specified time. Possible cause are:

-Stuck open thermostat
-Thermostat seal leaking
-Defective Engine Coolant Temperature (ECT) sensor


Are you experiencing any overheating of engine or overcooling (resulting in little to no heat with heater blower on) of engine? If so, you probably need to replace your thermostat. If not, your sensor is faulty and giving the vehicle's computer a false reading.



Replacing a thermostat is quiet simple. If you would like removal/installation instructions for this component, just let me know.


Hope this helps..
Thanks for using 2CarPros.com!
Jan 17, 2009 at 3:52 PM