P252C — Engine Oil Quality Sensor Circuit Low

What Does P252C Mean?

P252C is a diagnostic trouble code indicating: Engine Oil Quality Sensor Circuit Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P252C

⚠️ Check Engine Light (MIL) illuminated
⚠️ Engine Oil Quality Sensor reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Open or broken wire in Engine Oil Quality Sensor circuit
🔍 Poor ground connection at Engine Oil Quality Sensor
🔍 Faulty Engine Oil Quality Sensor with no output signal
🔍 Disconnected or loose Engine Oil Quality Sensor connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P252C mean?

P252C indicates: Engine Oil Quality Sensor Circuit Low. The vehicle's computer has detected that the Engine Oil Quality Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P252C?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P252C for extended periods may cause additional problems.

How much does it cost to fix P252C?

Repair costs for P252C typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Repair broken wire or restore ground in Engine Oil Quality Sensor circuit
🔧 Clean and secure Engine Oil Quality Sensor connector and ground points
🔧 Replace failed Engine Oil Quality Sensor

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P252C: Engine Oil Quality Sensor Circuit Low