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  • avatar karjunkie 01/02/10 5:46 pm PST

    Code P1126 indicates a fault with the thermostat function. This code sets when the 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 is on? 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 or the ECT is quiet simple.

Answers

  • tony78 01/02/10 5:42 pm PST

    P1126,,Thermostat function,

    ,P1126 is saying the engine is not heating up fast enough to go into closed loop operation.

    Check coolant level.

    May be defective water pump.

    May be defective thermostat.

    May need cooling system flush.

    May need to replace coolant.

  • karjunkie 01/02/10 5:46 pm PST

    Code P1126 indicates a fault with the thermostat function. This code sets when the 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 is on? 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 or the ECT is quiet simple.

  • autoexpertech 01/02/10 10:27 pm PST

    P1126 Indicates that the Computer has not seen the coolant temperature rise enough given the amount of time the engine has been running. Chances are, the thermostat is stuck open. However it's possible that the coolant temp sensor has gone bad.
    You need to determine the actual operating temp of the engine. If it's below 180*F, the t/stat's opening too soon.
    9 year-old car?... Properly service the cooling system; replace the t/stat with a top-dollar after-market or, better still, an OE part; refill it with the correct coolant, at the correct mixture, using the correct procedure; clear the codes; recheck for any pending codes.

    Source: autoexpertech.com

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