OBD-II Code P0337 is defined as a Crankshaft Position Sensor “A” Circuit Low. The Crankshaft Position Sensor measures the exact rotational speed and position of the crankshaft. This provides a critical data signal used by the Powertrain Control Module (PCM) to control Ignition Spark Timing and Fuel Delivery. This sensor may be built into the distributor on older vehicles. When the PCM detects an irregular signal or no signal, it will set code P0337.
What Does the P0337 Code Mean?
The P0337 code indicates that the Powertrain Control Module (PCM) has detected a low signal from the Crankshaft Position Sensor. This sensor is crucial for the engine’s timing and fuel delivery, making it integral to the engine’s overall performance.
What Causes the P0337 Code?
Several factors can trigger the P0337 code, including:
- Broken tone ring
- Crankshaft Position Sensor (CKP) failure
- Powertrain Control Module (PCM) failure
- Wiring issues
What Are the Symptoms of the P0337 Code?
The symptoms associated with the P0337 code often include:
- Decreased engine performance
- Engine may not start
- Increased fuel consumption
How Serious Is the P0337 Code?
The P0337 code is considered urgent, indicating that immediate action is necessary. This code points to significant malfunctions that can lead to severe damage to the vehicle or pose a risk to the driver and passengers.
How to Diagnose the P0337 Code
Proper diagnosis of the P0337 code involves a complete diagnostic routine, including:
- Scanning the vehicle for trouble codes
- Inspecting the Crankshaft Position Sensor and its wiring
- Checking the tone ring and PCM functionality
Understanding the code and the part it refers to is crucial for effective troubleshooting.
Common Repairs for the P0337 Code
Common repairs for the P0337 code may include:
- Crankshaft Position Sensor Replacement
How Much Does It Cost to Fix the P0337 Code?
The cost to fix the P0337 code can vary based on the specific issue and the labor rates in your area. Generally, replacing the Crankshaft Position Sensor can range from $200 to $600, depending on the vehicle make and model.
Can I Fix the P0337 Code Myself?
While some vehicle owners may attempt to fix the P0337 code themselves, it is essential to have a good understanding of automotive systems and diagnostics. If you are not confident in your abilities, it is recommended to seek professional repair to ensure the issue is resolved correctly.
