What Does the P0373 Code Mean?
The P0373 code is an OBD-II trouble code that indicates a problem with the timing reference high-resolution signal “A”. This code typically arises when the engine control module (PCM) detects an intermittent or erratic signal from the crankshaft position sensor (CKP) that it sends to the Fuel Injection Control Module (FICM).
What Causes the P0373 Code?
Several factors can trigger the P0373 code, including:
- Crankshaft Position Sensor (CKP) failure
- Fuel Injection Control Module (FICM) failure
- Powertrain Control Module (PCM) failure
- Wiring issues that disrupt the signal
What Are the Symptoms of the P0373 Code?
The symptoms associated with the P0373 code can vary, but common signs include:
- Decreased engine performance
- Engine may not start
How Serious Is the P0373 Code?
The P0373 code is considered urgent and indicates that immediate action is necessary. This code represents a significant malfunction that can lead to severe damage to the vehicle or pose safety risks to the driver and passengers.
How to Diagnose the P0373 Code
Diagnosing the P0373 code involves a systematic approach, including:
- Using an OBD-II scanner to confirm the code and check for any additional codes.
- Inspecting the crankshaft position sensor and its wiring for any visible damage.
- Testing the functionality of the CKP sensor and FICM.
- Checking the PCM for faults.
Common Repairs for the P0373 Code
Depending on the diagnosis, common repairs for the P0373 code may include:
- Replacing the crankshaft position sensor (CKP)
- Repairing or replacing the wiring harness
- Replacing the Fuel Injection Control Module (FICM)
- Reprogramming or replacing the Powertrain Control Module (PCM)
How Much Does It Cost to Fix the P0373 Code?
The cost to fix the P0373 code can vary significantly based on the underlying issue. On average, repairs can range from $100 to $1,000, depending on whether you need to replace a sensor, repair wiring, or replace the PCM.
Can I Fix the P0373 Code Myself?
While some DIY enthusiasts may be able to handle simple repairs like replacing a sensor or fixing wiring issues, it is essential to have a good understanding of automotive diagnostics. If you are not confident in your abilities, it is advisable to seek professional help to ensure a proper fix.
