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OBD-II Code P0335: Crankshaft Position Sensor Circuit Malfunction

Understanding the P0335 Code

When an OBD-II vehicle displays the P0335 code, it indicates a problem with the crankshaft position sensor circuit. The crankshaft position sensor monitors the crankshaft's position and speed, facilitating precise fuel injection and ignition timing. When this sensor malfunctions, it can lead to engine performance issues.

Causes of the P0335 Code

Several factors can contribute to the P0335 code, including:

• Faulty crankshaft position sensor
• Damaged or loose reluctor ring
• Wiring harness issues
• Powertrain control module (PCM) problems
• Open or short circuits in the wiring harness

Symptoms of the P0335 Code

Vehicles with the P0335 code may exhibit symptoms such as:

• Engine stalling or hesitation
• Rough idle
• Reduced engine power
• Illuminated check engine light

Diagnosing and Repairing the P0335 Code

To diagnose and repair the P0335 code, it's recommended to follow these steps:

1. Verify the code with an OBD-II scanner.
2. Inspect the crankshaft position sensor and its wiring harness for damage or loose connections.
3. Check the reluctor ring for any damage or excessive wear.
4. Using a multimeter, test the voltage and resistance of the sensor and wiring harness.
5. If necessary, replace the faulty component (sensor, reluctor ring, or wiring harness).
6. Clear the code and perform a test drive to ensure the problem is resolved.

Conclusion

The P0335 code is a common OBD-II code indicating a problem with the crankshaft position sensor circuit. By understanding the causes, symptoms, and repair procedures, vehicle owners can promptly address this issue and maintain a smooth-running engine.

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