Error Code P1285 is defined as Cylinder Head Over Temperature Condition, a condition that usually happens when your 2008 Saturn Vue overheated.
This error code is a manufacturer-specific trouble code, meaning it does NOT apply to all cars equipped with OBD-II system or cars made since 1996 up to present. Rather, it applies to select manufacturers, particularly Ford cars.
Engine overheat condition is determined by the Cylinder Head Over Temperature sensor. An overheat condition means the temperature gauge reads temperature that is higher than normal or more than the allowable temperature for the engine to function properly.
As with other error codes, P1285 activates the Check engine light and registers the error code. For the overheat condition, the most common symptom is the emission of excessive white smoke from the tailpipe.
Overheat condition can be due to multitude of things, such as defective thermostat and coolant loss, which is usually caused by a leak. Other possible caused for this code includes:
When this code appears, the first thing you need to determine is whether your 2008 Saturn Vue overheated, and how many miles are on it.
Then, you need to check the coolant level and condition.
Next, check for coolant leaks. Also, check whether the cooling fan is working properly in both high and low speeds. You can do this by starting your 2008 Saturn Vue and disconnecting the ECT (engine coolant temperature) sensor and see whether the high-speed fan turns on within 5 to 10 seconds.
If you have a personal scanner, check whether it can access the data stream. If you can use the data stream, check the Cylinder Head Temperature (CHT) sensor resistance. It should be between 0.067 kilo ohms to 965 kilo ohms. The higher the temperature, the lower the reading there is for resistance. The CHT is located on the rear of the left side head.
As with other overheat conditions, the first thing you need to do once you realize you’re having an engine overheat is to turn off the engine and let it cool down before doing anything on it. Never take off the radiator cap. Then, refill or add antifreeze or coolant.
Next, check for leaks, bursts, and blockages in the hoses.
Monitor the temperature gauge carefully.
If you have determined the cause of the overheat is the faulty cylinder head temperature sensor, then have that sensor replaced.
Repair or replace open or shorted cylinder head temperature sensor.
Repair or replace electrical connection in the cylinder head temperature sensor.
Engine overheat condition can cause severe damage to your 2008 Saturn Vue . Thus, it is important to get the problem addressed as soon as possible. Also, it always pays to keep a safety kit in your2008 Saturn Vue .