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Engine-Codes – GMC – P0335 GMC

P0335 GMC Code - Crankshaft Position Sensor Circuit

Quick Answer

The P0335 diagnostic trouble code (DTC) for GMC vehicles indicates a problem with the crankshaft position sensor circuit. Common causes include Faulty crankshaft position sensor, Damaged wiring or connectors in the sensor circuit, Issues with the ECM. 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
P0335 GMC indicates Crankshaft Position Sensor Circuit.
Common causes
Common causes include Faulty crankshaft position sensor, Damaged wiring or connectors in the sensor circuit, Issues with the ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 18, 2024
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Code P0335 GMC Description

The P0335 diagnostic trouble code (DTC) for GMC vehicles indicates a problem with the crankshaft position sensor circuit. The crankshaft position sensor is a crucial component that monitors the position and rotational speed of the crankshaft in the engine. This information is essential for the engine control module (ECM) to determine the ignition timing and fuel injection timing. A malfunction in this sensor can lead to poor engine performance, misfires, and even stalling.

OBDII Code P0335 GMC - Crankshaft Position Sensor Circuit
P0335 GMC Code - Crankshaft Position Sensor Circuit

Common Causes of P0335 GMC

  1. Faulty crankshaft position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Issues with the ECM
  4. Poor electrical connections
  5. Excessive dirt or debris obstructing the sensor

Symptoms of P0335 GMC

  1. Engine misfires or rough idling
  2. Difficulty starting the engine
  3. Reduced fuel efficiency
  4. Engine stalling or shutting off unexpectedly
  5. Illumination of the check engine light

How to Fix P0335 GMC

  1. Begin by diagnosing the root cause of the issue, which may involve using a scan tool to read the DTC and check sensor data.
  2. Inspect the wiring and connectors associated with the crankshaft position sensor for any damage or corrosion. Repair or replace as necessary.
  3. Test the sensor itself for proper operation using a multimeter or oscilloscope. Replace the sensor if it fails the test.
  4. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to pinpoint the exact cause of the malfunction.

Cost to Fix P0335 GMC

The cost of repairing a P0335 crankshaft position sensor circuit issue can vary depending on the specific vehicle and the extent of the problem. In general, the cost of replacing the crankshaft position sensor itself ranges from $50 to $200, while labor costs can range from $100 to $200. Overall, the total repair cost is typically between $150 and $400. Keep in mind that additional diagnostic time and any necessary parts or repairs may affect the final cost. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's make and model.

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Information for Specific GMC Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0335 GMC Code

1. What are the common symptoms of OBDII code P0335 in a GMC vehicle?

- Common symptoms include engine misfires, rough idling, stalling, difficulty starting the engine, and a decrease in fuel efficiency.

2. What does OBDII code P0335 indicate in a GMC vehicle?

- OBDII code P0335 indicates a problem with the crankshaft position sensor circuit in the vehicle.

3. What are the possible causes of OBDII code P0335 in a GMC vehicle?

- Possible causes include a faulty crankshaft position sensor, damaged sensor wiring, sensor connector issues, or a malfunctioning engine control module (ECM).

4. How can I diagnose the cause of OBDII code P0335 in my GMC vehicle?

- Diagnosing the issue involves checking the crankshaft position sensor for proper operation, inspecting the sensor wiring for damage, and testing the sensor circuit for continuity.

5. Can a faulty crankshaft position sensor be repaired, or does it need to be replaced?

- In most cases, a faulty crankshaft position sensor will need to be replaced rather than repaired to resolve OBDII code P0335.

6. Are there any tips for repairing OBDII code P0335 in a GMC vehicle?

- Ensure the sensor wiring is securely connected, use a multimeter to test the sensor's resistance, and consider consulting a professional mechanic for accurate diagnosis and repair.

7. How urgent is it to address OBDII code P0335 in a GMC vehicle?

- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential engine performance issues and further damage.

8. Can OBDII code P0335 cause permanent damage to the engine if left unresolved?

- Ignoring OBDII code P0335 can potentially lead to engine misfires, poor performance, and other issues that may cause damage over time if not addressed.

9. Is it safe to continue driving my GMC vehicle with OBDII code P0335 present?

- It is generally not recommended to drive the vehicle with OBDII code P0335 present, as it can lead to performance issues and potentially unsafe driving conditions.

10. How much does it typically cost to repair OBDII code P0335 in a GMC vehicle?

- The cost of repairing OBDII code P0335 can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

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