P1258 GMC - Engine Coolant Overtemperature Protection Mode Active
P1258 GMC Possible Causes
- Faulty Engine Coolant Temperature
- Engine Coolant Temperature harness is open or shorted
- Engine Coolant Temperature circuit poor electrical connection
How do I fix code P1258 GMC
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
P1258 GMC Tech Notes
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Cost of diagnosing the P1258 GMC code
Labor: 1.0The cost of diagnosing the P1258 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
P1258 GMC Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1258 GMC MeaningIn order to reduce the engine temperature the Powertrain Control Module (PCM) has the ability to disable a number of fuel injectors during an engine over temperature condition. The PCM considers the engine over temperature whenever the Engine Coolant Temperature (ECT) reaches a predetermined temperature. This DTC sets in order to show that the PCM detected an over temperature condition and that the system engaged the protection mode.
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