Engine Oil Level Too High
Table of contents
P252F TOYOTA Possible Causes
- Engine oil amount
- Faulty Oil Level Sensor
- Oil Level Sensor harness is open or shorted
- Oil Level Sensor circuit poor electrical connection
How do I fix code P252F TOYOTA?
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.
Cost of diagnosing the P252F TOYOTA code
The cost of diagnosing the P252F TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P252F TOYOTA Description
In the Diesel Particulate Filter (DPF) system, after the main injection and at the end of the expansion stroke, the injector assembly sprays a small amount of fuel to control PM regeneration; this is called “post-injection”.
Because the temperature and pressure of the sprayed fuel are low, it arrives at the catalytic converter unburned. The fuel is then oxidized by the catalytic action and the temperature of the DPF catalyst bed increases to burn accumulated soot.
However, some of the unburned fuel goes down to the oil pan through clearances in the cylinder walls. This fuel is mixed into the engine oil, causing the engine oil volume to increase.