Question about 2005 Chevrolet Equinox
2003 chev silverado truck 5.3 code p1258 the truck over heated and shut down can someone help me please
Posted on Jul 26, 2011
Engine Metal Over Temperature Protection
The discription for this code is
Engine temperature over protection levels.
Sounds like you overheated or you have a bad sensor
Posted on Feb 06, 2010
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Posted on Jan 02, 2017
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Jan 25, 2017 | Chevrolet Equinox Cars & Trucks
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Jan 26, 2013 | 2005 Chevrolet 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.
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