P0373 Timing Reference High Resolution Signal A Too Few Pulses: Causes, Symptoms, and Solutions
Have you ever encountered the P0373 code in your vehicle’s diagnostic system? This code indicates that there is an issue with the Timing Reference High Resolution Signal A Too Few Pulses.
This can cause a number of problems with your engine’s performance and fuel efficiency. In this article, we will discuss the causes, symptoms, and solutions for the P0373 code.
What is the P0373 code?
The P0373 code is a diagnostic trouble code that indicates a problem with the Timing Reference High Resolution Signal A Too Few Pulses. This code is typically found in diesel engines, and it indicates that there is an issue with the signal that is being sent to the engine’s computer from the crankshaft position sensor.
Causes of the P0373 code
There are several potential causes of the P0373 code, including:
- Malfunctioning crankshaft position sensor: The crankshaft position sensor is responsible for sending the engine’s computer information about the position of the crankshaft. If this sensor malfunctions or sends incorrect information, it can cause the P0373 code to appear.
- Wiring issues: Wiring issues can also cause the P0373 code. If there is damage to the wiring that connects the crankshaft position sensor to the engine’s computer, the signal may be disrupted, causing the code to appear.
- Failed engine control module: In some cases, the engine control module (ECM) may fail, causing the P0373 code to appear. This can happen due to a variety of reasons, including faulty wiring or a power surge.
Symptoms of the P0373 code
If your vehicle’s diagnostic system displays the P0373 code, there are several symptoms that you may experience, including:
- Reduced engine performance: The P0373 code can cause reduced engine performance, which can be noticeable when accelerating or when driving up hills.
- Poor fuel efficiency: If the engine is not performing efficiently, it can cause poor fuel efficiency. This can result in more frequent trips to the gas pump.
- Engine misfires: If the P0373 code is not addressed, it can cause the engine to misfire, which can cause further damage to the engine.
Solutions for the P0373 code
If your vehicle’s diagnostic system displays the P0373 code, there are several solutions that can be implemented, including:
- Replacing the crankshaft position sensor: If the crankshaft position sensor is malfunctioning, it will need to be replaced to resolve the P0373 code.
- Repairing wiring issues: If there are wiring issues causing the P0373 code, the wiring will need to be repaired or replaced.
- Replacing the engine control module: If the ECM has failed, it will need to be replaced to resolve the P0373 code.
Conclusion
The P0373 code can indicate a serious issue with your vehicle’s engine performance and fuel efficiency. It is important to address this issue quickly to prevent further damage to your engine. By understanding the causes, symptoms, and solutions for the P0373 code, you can ensure that your vehicle is running at peak performance.
FAQs
- Can I still drive my vehicle with the P0373 code?
It is not recommended to drive your vehicle with the P0373 code. This can cause further damage to your engine and may result in costly repairs. - How do I know if the crankshaft position sensor needs to be replaced?
If you are experiencing symptoms of the P0373 code, such as reduced engine performance or poor fuel efficiency, the crankshaft position sensor may need to be replaced. - How much does it cost to replace the crankshaft position sensor?
The cost to replace the crankshaft position sensor can vary depending on the make and model of your vehicle. In general, the cost can range from $100 to $300. - Can I replace the crankshaft position sensor myself?
Replacing the crankshaft position sensor can be a difficult task. It is recommended to have a professional mechanic replace the sensor. - How can I prevent the P0373 code from appearing in the future?
Regular maintenance of your vehicle, including checking the crankshaft position sensor and wiring, can help prevent the P0373 code from appearing.
