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Engine coolant temp above 268 - protection mode activated

Engine coolant temp above 268
protection mode activated

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SOURCE: 2002 Grand Prix Temp Light On Engine In Protection Mode

Replace the temp sensor/switch located on the radiator.  Don't forget to drain your radiator and use teflon tape on the sensor when installing it.  DO NOT over-tighten.

Posted on Mar 23, 2009

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You will need to inspect the cooling system to see what is causing your overheating issue. If the engine is not actually overheating, this code may be set due to a faulty engine coolant temperature (ECT) sensor.



Hope this helps, also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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What is a code p1258 on chevy equinox


DTC P1258 - Engine Coolant Over-Temperature Protection



The powertrain control module (PCM) has the ability to disable 4 injectors during an engine over-temperature (overheating) conditoin. Engine is considered over-temperature whenever the engine coolant temperature reaches 268 F. This protection mode allows the PCM to alternate between groups of cylinders, thereby reducing coolant temperature. This is accomplished by disabling the fuel injectors. This DTC is set to show that an overheating condition was or is observed by the PCM and that the protection mode has been engaged.



You will need to inspect the cooling system to see what is causing your overheating issue. If the engine is not actually overheating, this code may be set due to a faulty engine coolant temperature (ECT) sensor.



Hope this helps, also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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2002 Grand Prix Temp Light On Engine In Protection Mode


Replace the temp sensor/switch located on the radiator.  Don't forget to drain your radiator and use teflon tape on the sensor when installing it.  DO NOT over-tighten.

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