P051C
Crankcase Pressure Sensor A Circuit Low
P051C is an OBD-II diagnostic trouble code meaning: Crankcase Pressure Sensor A Circuit Low. Common causes: short circuit of the sensor signal wire to ground, sensor power wire break. Estimated repair cost: $33–111.
Symptoms
- Check Engine Light Is On
- Possible unstable idle operation
- Related PCV System Codes
- Oil deposits in the intake tract
Causes
- Short circuit of the sensor signal wire to ground
- Sensor power wire break
- Faulty crankcase gas pressure sensor
- Blockage of the tube connecting the sensor to the crankcase
- ECU malfunction
How to Fix
- Read error codes and check related PCV system codes
- Find the crankcase gas pressure sensor according to the diagram
- Check the supply voltage (5V) at the sensor connector
- Check signal wire for short to ground
- Make sure that the tube connecting the sensor to the crankcase is not clogged.
- Replace the sensor if the characteristics do not match
- Reset the error and check the system
Related codes
Error P051C by Vehicle Brand
FAQ
What does the P051C code mean?
P051C is an OBD-II diagnostic trouble code that indicates: Crankcase Pressure Sensor A Circuit Low
What causes a P051C error code?
The most common causes of P051C include: Short circuit of the sensor signal wire to ground; Sensor power wire break; Faulty crankcase gas pressure sensor; Blockage of the tube connecting the sensor to the crankcase.
How do I fix a P051C diagnostic trouble code?
To fix P051C: Read error codes and check related PCV system codes. Find the crankcase gas pressure sensor according to the diagram. Check the supply voltage (5V) at the sensor connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P051C?
Limited driving only, diagnose soon
How much does it cost to fix P051C?
The estimated repair cost for P051C is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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