The P2479 code is an OBD-II trouble code that indicates a problem with the exhaust gas temperature (EGT) sensor. This code is related to monitoring the temperature of the exhaust gases as they flow through the exhaust system, specifically before and after the Selective Catalytic Reduction (SCR) system.
What Does the P2479 Code Mean?
The P2479 code signifies that the Exhaust Gas Temperature Sensor is reporting a temperature reading that is out of the expected range. This could indicate a malfunctioning sensor, wiring issue, or a problem with the Powertrain Control Module (PCM).
What Causes the P2479 Code?
- Exhaust Gas Temperature (EGT) sensor failure
- Powertrain Control Module (PCM) failure
- Wiring issues, such as damaged or corroded connectors
What Are the Symptoms of the P2479 Code?
Symptoms of the P2479 code may include:
- Check Engine Light illuminated
- Reduced engine performance
- Increased emissions
- Possible issues with the Diesel Exhaust Fluid (DEF) system
How Serious Is the P2479 Code?
The P2479 code has a moderate severity rating. While it may not pose an immediate threat to vehicle safety or functionality, it is important to diagnose the issue promptly to prevent further damage and maintain optimal performance.
How to Diagnose the P2479 Code
Diagnosing the P2479 code typically involves the following steps:
- Use an OBD-II scanner to confirm the presence of the P2479 code.
- Inspect the wiring and connectors associated with the EGT sensor for any visible damage or corrosion.
- Test the functionality of the EGT sensor with a multimeter.
- Check the PCM for any additional codes that may indicate related issues.
Common Repairs for the P2479 Code
Common repairs for the P2479 code may include:
- Replacing the faulty Exhaust Gas Temperature (EGT) sensor
- Repairing or replacing damaged wiring and connectors
- Replacing the Powertrain Control Module (PCM) if it is determined to be faulty
How Much Does It Cost to Fix the P2479 Code?
The cost to repair the P2479 code can vary widely based on the cause of the problem and labor rates in your area. Generally, it can range from $100 for simple wiring repairs to upwards of $500 or more for sensor replacement or PCM issues.
Can I Fix the P2479 Code Myself?
Fixing the P2479 code yourself is possible if you have some mechanical knowledge and the right tools. Simple tasks such as checking wiring and replacing the EGT sensor can be performed by a DIY mechanic. However, for more complex issues involving the PCM, it is recommended to seek professional assistance.
