The P2473 OBD-II code refers to an issue detected in the exhaust gas temperature sensor circuit. This code is triggered when the Powertrain Control Module (PCM) identifies an implausible signal from the Exhaust Gas Temperature (EGT) sensor.
What Does the P2473 Code Mean?
The P2473 code indicates that there is a malfunction in the exhaust gas temperature sensor circuit. This sensor plays a crucial role in monitoring the temperature of exhaust gases entering and exiting the Selective Catalytic Reduction (SCR) system. If the PCM receives a signal that is inconsistent or outside of expected parameters, it triggers this code.
What Causes the P2473 Code?
- Exhaust Gas Temperature (EGT) sensor failure
- Powertrain Control Module (PCM) failure
- Wiring issues related to the EGT sensor
What Are the Symptoms of the P2473 Code?
- Check Engine Light illuminated
- Possible decrease in engine performance
- Increased emissions
- Potential failure of emissions testing
How Serious Is the P2473 Code?
While the P2473 code is considered of moderate severity, it should not be ignored. Although it may not pose an immediate threat to the vehicle’s safety or functionality, it is advisable to have it diagnosed promptly to prevent further complications and maintain optimal vehicle performance.
How to Diagnose the P2473 Code
Diagnosing the P2473 code typically involves the following steps:
- Using an OBD-II scanner to confirm the P2473 code and check for any additional trouble codes.
- Inspecting the EGT sensor and its wiring for visible damage or disconnections.
- Testing the EGT sensor’s resistance and voltage output to ensure it is functioning correctly.
- Checking the PCM for any potential malfunctions.
Common Repairs for the P2473 Code
- Replacing the Exhaust Gas Temperature (EGT) sensor
- Repairing or replacing damaged wiring or connectors
- Reprogramming or replacing the Powertrain Control Module (PCM)
How Much Does It Cost to Fix the P2473 Code?
The cost to fix the P2473 code can vary widely based on the specific issue found during diagnosis. On average, repairs may range from $100 to $500, depending on whether the EGT sensor needs to be replaced, wiring repairs are required, or if the PCM needs reprogramming or replacement.
Can I Fix the P2473 Code Myself?
If you have experience with automotive repairs and have the necessary tools, you may be able to fix the P2473 code yourself. However, diagnosing the exact cause of the code requires specific knowledge and equipment. If you are unsure, it is best to consult with a professional mechanic to ensure proper repairs are made.
