The P2474 code is an OBD-II diagnostic trouble code that indicates a problem with the Exhaust Gas Temperature (EGT) Sensor Circuit’s range or performance. This code is typically associated with diesel engines, where proper management of exhaust gases is crucial for compliance with emission standards.
What Does the P2474 Code Mean?
The P2474 code signifies that the Powertrain Control Module (PCM) has detected an implausible reading from the Exhaust Gas Temperature sensor. This sensor monitors the temperature of exhaust gases entering and leaving the Selective Catalytic Reduction (SCR) system, which is essential for reducing harmful emissions.
What Causes the P2474 Code?
Several factors can lead to the P2474 code, including:
- Exhaust Gas Temperature (EGT) sensor failure
- Powertrain Control Module (PCM) failure
- Wiring issues within the sensor circuit
What Are the Symptoms of the P2474 Code?
Drivers may experience the following symptoms when the P2474 code is present:
- Check Engine Light illuminated
- Increased exhaust emissions
- Reduced engine performance
- Potential failure of emissions testing
How Serious Is the P2474 Code?
The P2474 code is considered to have moderate severity. While it may not immediately impact the safety or functionality of your vehicle, it is important to address the issue promptly to prevent further damage and ensure your vehicle runs efficiently.
How to Diagnose the P2474 Code
Diagnosing the P2474 code involves several steps:
- Use an OBD-II scanner to confirm the presence of the P2474 code and check for any additional trouble codes.
- Inspect the wiring and connectors associated with the EGT sensor for any visible damage or corrosion.
- Test the EGT sensor’s resistance and voltage output to ensure it is functioning properly.
- Examine the PCM for any faults that could affect the sensor’s readings.
Common Repairs for the P2474 Code
Common repairs for the P2474 code may include:
- Replacing a faulty Exhaust Gas Temperature (EGT) sensor
- Repairing or replacing damaged wiring or connectors
- Reprogramming or replacing the Powertrain Control Module (PCM) if necessary
How Much Does It Cost to Fix the P2474 Code?
The cost to fix the P2474 code can vary widely based on the specific repairs needed. On average, you may expect to pay between $100 and $400 for diagnostic and repair services, including parts and labor.
Can I Fix the P2474 Code Myself?
If you have automotive repair experience and the necessary tools, you may be able to diagnose and fix the P2474 code yourself. However, if you are unfamiliar with vehicle electrical systems or lack the proper equipment, it is recommended to seek assistance from a certified mechanic to ensure the issue is resolved correctly.
