P252A Fault Code

Engine Oil Quality Sensor Circuit

• What does that mean?
• Symptoms
• Causes
• Solutions

The P252A fault code relates to an issue with the Engine Oil Quality Sensor Circuit. This sensor plays a critical role in monitoring the quality and condition of the engine oil. When it detects that the oil quality is below acceptable levels, it triggers a warning to help prevent potential engine damage.

What are the symptoms of the P252A code?

Symptoms may present as:

• Illumination of the check engine light on the dashboard.
• Poor engine performance or reduced fuel efficiency.
• Engine oil quality warnings or indicators on the vehicle's display.
• Unusual engine noises indicative of oil starvation or degradation.

What causes the P252A code?

Common causes of the P252A code include:

• Dirty or degraded engine oil exceeding maintenance intervals.
• Faulty oil quality sensor.
• Wiring or connector issues leading to poor sensor communication.
• Engine oil contamination due to external factors.

How to fix P252A?

To resolve a P252A code, you should:

• Change the engine oil and replace the oil filter to restore proper oil quality.
• Test the oil quality sensor for functionality and replace it if faulty.
• Inspect and repair wiring and connectors associated with the sensor circuit.
• Clear the fault codes and perform a test drive to ensure the issue is resolved.