The P0335 code, or “Crankshaft Position Sensor A Circuit Malfunction,” refers to an issue with the crankshaft position sensor, which plays a critical role in engine timing. Below, we’ll explore how different manufacturers handle this code, its causes, symptoms, and solutions.
What Does the P0335 Code Mean?
The P0335 code appears when the engine control module (ECM) detects a problem with the crankshaft position sensor circuit. The crankshaft position sensor measures the rotation speed and position of the crankshaft, which is crucial for maintaining proper timing of the engine’s fuel injection and ignition systems.
Criteria for Setting P0335:
- 2018 Nissan Altima: The ECM triggers P0335 if the crankshaft position sensor signal is missing during engine cranking.
- 2017 Mazda: The P0335 code is set if the ECM does not receive the expected input from the crankshaft position sensor for a specified period.
- 2007 Jeep Wrangler: The ECM will trigger this code when it fails to receive crankshaft position sensor signals during engine operation.
- 2016 Chevy Silverado: The ECM monitors the crankshaft sensor, and when it detects an abnormal signal, it will log a P0335 code.
P0335 on Some Infiniti Vehicles
For Infiniti models, especially those with V6 or V8 engines, the P0335 code is often triggered by issues related to the crankshaft position sensor or wiring. Infiniti vehicles tend to be sensitive to electrical issues, making proper diagnosis and repair crucial for optimal performance.
What are the Possible Causes of the P0335 Code?
The P0335 code can be caused by several factors, including:
- Faulty Crankshaft Position Sensor: The sensor itself may be worn or damaged, sending incorrect signals to the ECM.
- Wiring Issues: Loose, frayed, or corroded wires leading to the sensor can disrupt communication.
- Timing Belt Problems: A worn or misaligned timing belt can interfere with proper sensor operation.
- Faulty ECM: In rare cases, the engine control module may be defective and misinterpreting signals from the crankshaft sensor.
What are the Common Symptoms of the P0335 Code?
The P0335 code usually presents with several symptoms, including:
- Engine Stalling: The engine may stall unexpectedly while driving.
- Hard Starting: The engine may have difficulty starting or fail to start altogether.
- Poor Acceleration: You might notice a significant decrease in power, especially when accelerating.
- Check Engine Light: The most obvious indicator is the illuminated check engine light on your dashboard.
- Misfires: Engine misfires may occur due to improper timing.
How to Diagnose the P0335 Code
Proper diagnosis of the P0335 code involves the following steps:
- Scan for Codes: Use an OBD-II scanner to confirm the presence of the P0335 code and any related codes.
- Inspect the Crankshaft Position Sensor: Check the sensor for signs of damage, wear, or corrosion.
- Test Wiring and Connectors: Check all wiring leading to the crankshaft position sensor for loose or damaged connections.
- Test the Sensor: Use a multimeter to check the crankshaft position sensor’s electrical resistance.
- Inspect the Timing Belt: If the belt is worn or damaged, it may be affecting the sensor’s readings.
How to Fix the P0335 Code
Once the root cause is identified, the P0335 code can be fixed by:
Replace the Crankshaft Position Sensor
If the sensor is faulty, it will need to be replaced. Make sure to install an OEM-quality sensor to ensure accurate readings and optimal engine performance.
Replace the Timing Belt
If the timing belt is damaged or worn, replacing it can resolve the issue. This is particularly important because a bad timing belt can interfere with the engine’s timing and crankshaft sensor operation.
In conclusion, the P0335 code is a sign of issues with the crankshaft position sensor or related components. Proper diagnosis and prompt repair are essential to keep your vehicle running smoothly and prevent further engine damage.