P051E Code - Crankcase Pressure Sensor Circuit Intermittent/Erratic
Quick Answer
The Engine Control Module (ECM) monitors the Crankcase Pressure Sensor signal. Common causes include Faulty Crankcase Pressure Sensor, Crankcase Pressure Sensor harness is open or shorted, Crankcase Pressure Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P051E indicates Crankcase Pressure Sensor Circuit Intermittent/Erratic.
- Common causes
- Common causes include Faulty Crankcase Pressure Sensor, Crankcase Pressure Sensor harness is open or shorted, Crankcase Pressure Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P051E Description
What are the Possible Causes of the DTC P051E?
- Faulty Crankcase Pressure Sensor
- Crankcase Pressure Sensor harness is open or shorted
- Crankcase Pressure Sensor circuit poor electrical connection
How to Fix the DTC P051E?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P051E code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P051E Dodge — Crankcase Pressure Sensor Circuit Intermittent/Erratic
- P051E Ford — Crankcase Pressure Sensor Circuit Intermittent/Erratic
Frequently Asked Questions about P051E Code
1. What does the OBDII code P051E mean?
P051E indicates an issue with the Crankcase Pressure Sensor Circuit, specifically that it is showing intermittent or erratic behavior.
2. What are the common symptoms of P051E?
Symptoms may include a check engine light, rough idling, decreased engine performance, increased oil consumption, or unusual engine noises.
3. What causes the P051E code to appear?
Possible causes include a faulty crankcase pressure sensor, damaged wiring or connectors in the sensor circuit, a blocked PCV (positive crankcase ventilation) system, or an ECM/PCM malfunction.
4. Can I drive my car with a P051E code?
While the car may still be drivable, ignoring this code can lead to engine performance issues or damage over time. It’s best to address the issue promptly.
5. How do you diagnose a P051E code?
Diagnosis involves visually inspecting the wiring and connectors, testing the crankcase pressure sensor with a multimeter, checking the PCV system for blockages, and scanning for additional codes.
6. How can I fix the P051E code?
Repairs may include replacing the crankcase pressure sensor, repairing damaged wiring or connectors, cleaning or replacing PCV components, or updating/reprogramming the ECM/PCM.
7. How much does it cost to fix a P051E code?
Repair costs vary but typically range from $100 to $300, depending on whether the issue is with the sensor, wiring, or PCV system.
8. Can a dirty PCV valve cause the P051E code?
Yes, a clogged or malfunctioning PCV valve can disrupt crankcase pressure and trigger the P051E code.
9. What tools are needed to troubleshoot P051E?
You’ll need an OBDII scanner, a multimeter for testing electrical components, and possibly tools to access and inspect the PCV system.
10. Can a software update resolve P051E?
In some cases, a PCM/ECM software update may resolve intermittent sensor communication issues, but this should be done after ruling out hardware problems.
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