The P2084 code is an OBD-II diagnostic trouble code that indicates an issue with the exhaust gas temperature sensor circuit performance. This code typically emerges when the engine control module (PCM) detects an implausible reading from the exhaust gas temperature (EGT) sensor.
What Does the P2084 Code Mean?
The P2084 code specifically refers to a problem in the exhaust gas temperature sensor circuit. The EGT sensor monitors the temperature of the exhaust gases as they enter and exit the Selective Catalytic Reduction (SCR) system. If the PCM identifies a signal from the EGT sensor that does not match expected parameters, it will trigger the P2084 code.
What Causes the P2084 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 P2084 Code?
- Decreased engine performance
- Potential increase in fuel consumption
- Check Engine Light illuminated
How Serious Is the P2084 Code?
The P2084 code is classified as a moderate severity issue. While it may not pose an immediate threat to the vehicle’s safety or functionality, it is important to address it promptly. Ignoring this code could lead to decreased engine performance and potentially more serious issues down the road.
How to Diagnose the P2084 Code
Proper diagnosis of the P2084 code should be performed with the help of a professional mechanic. They will typically follow these steps:
- Use an OBD-II scanner to confirm the code and check for any related codes.
- Inspect the wiring and connectors associated with the EGT sensor for damage or corrosion.
- Test the EGT sensor with a multimeter to ensure it is functioning within specifications.
- Evaluate the PCM for proper operation.
Common Repairs for the P2084 Code
Repairs for the P2084 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)
How Much Does It Cost to Fix the P2084 Code?
The cost to repair the P2084 code can vary widely depending on the specific issue and labor rates in your area. On average, repairs can range from $100 to $500, depending on whether the EGT sensor needs to be replaced, wiring repaired, or the PCM reprogrammed.
Can I Fix the P2084 Code Myself?
While some experienced DIY mechanics may be able to perform basic inspections and repairs, it is generally recommended to seek professional assistance for diagnosing and fixing the P2084 code. This ensures that the underlying issue is accurately identified and properly addressed.
