The P2087 code is a diagnostic trouble code (DTC) that indicates an issue with the exhaust gas temperature (EGT) sensor circuit, specifically for Bank 2 Sensor 2. This code is part of the OBD-II system, which monitors the performance of various components in a vehicle’s powertrain. When the engine control module (ECM) detects an intermittent signal from the EGT sensor, it triggers the P2087 code. Understanding this code is essential for vehicle owners and DIY mechanics, as it can affect engine performance and emissions.
| P2087 Code Meaning | P2087 Code Common Causes |
|---|---|
| Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2 | Faulty EGT sensor |
| Intermittent signal from the EGT sensor | Wiring issues or poor connections |
| Potential issues with the Powertrain Control Module (PCM) | Exhaust leaks affecting sensor readings |
| Sensor placement issues | Excessive particulate matter buildup on the sensor |
Symptoms of P2087 Code
When the P2087 code is triggered, drivers may experience several symptoms, including:
- Check Engine Light: The most common indication that something is wrong with your vehicle.
- Decreased Engine Performance: The vehicle may run poorly or have reduced power.
- Increased Emissions: The vehicle might fail emissions tests due to improper readings from the EGT sensor.
- Unusual Engine Noises: There may be odd sounds coming from the engine compartment if there are exhaust leaks.
Technical Explanation of P2087 Code
The P2087 code specifically relates to the exhaust gas temperature sensor circuit for Bank 2 Sensor 2. This sensor is crucial for measuring the temperature of exhaust gases after they pass through the catalytic converter. The data collected helps the ECM adjust fuel mixture and timing to optimize performance and reduce emissions.
How the EGT Sensor Works
The EGT sensor operates by converting temperature readings into electrical signals that are sent to the ECM. If the ECM receives an intermittent or out-of-range signal from this sensor, it triggers the P2087 code. Possible causes for this issue include:
- Defective EGT Sensor: The sensor itself may be malfunctioning.
- Wiring Issues: Damaged or corroded wiring can lead to poor connections or short circuits.
- Poor Electrical Connections: Loose or corroded connectors can interrupt signal transmission.
- Exhaust Leaks: Leaks can cause inaccurate temperature readings.
Step-by-Step Diagnosis of P2087 Code
Diagnosing the P2087 code involves several steps:
- Visual Inspection:
- Check for any visible damage to wiring and connectors related to the EGT sensor.
- Look for signs of exhaust leaks near the sensor.
- Use an OBD-II Scanner:
- Connect an OBD-II scanner to retrieve DTCs.
- Clear any existing codes and take the vehicle for a test drive to see if the P2087 code reappears.
- Check EGT Sensor Resistance:
- Disconnect the EGT sensor and use a multimeter to check its resistance.
- Compare readings with manufacturer specifications; replace if out of range.
- Inspect Wiring and Connectors:
- Check wiring continuity from the EGT sensor to the PCM.
- Repair any damaged wires or connectors as needed.
- Test Drive:
- After repairs, take the vehicle for a test drive to ensure that no codes reappear.
Solution Methods for P2087 Code
To resolve issues related to the P2087 code, consider these solutions:
Replace Faulty Components
- EGT Sensor Replacement: If diagnostics indicate that the EGT sensor is defective, replacing it is often necessary.
Repair Wiring Issues
- Wiring Repair: Fix any damaged wiring or poor connections that could be causing intermittent signals.
Address Exhaust Leaks
- Exhaust System Inspection: Check for and repair any leaks in the exhaust system that could affect sensor readings.
PCM Reprogramming or Replacement
- If all else fails, consider having a professional check whether reprogramming or replacing the PCM is necessary.
Cost Estimates for Repairs
Repair costs can vary significantly based on location and vehicle make/model. Here are some general estimates:
- EGT Sensor Replacement: $100 – $300 (parts and labor)
- Wiring Repairs: $50 – $150 (depending on extent of damage)
- Exhaust Leak Repairs: $100 – $500 (depending on location and severity)
- PCM Replacement/Reprogramming: $200 – $1,500 (depending on vehicle specifications)
Warnings and Recommendations
- Always consult your vehicle’s service manual before attempting repairs.
- If you are not comfortable performing these diagnostics or repairs, seek help from a certified mechanic.
- Ignoring a P2087 code can lead to more severe engine issues over time, so it’s advisable to address it promptly.
Closing Paragraph
The P2087 trouble code signifies an important issue with your vehicle’s exhaust gas temperature monitoring system. Understanding its implications and symptoms allows vehicle owners and DIY mechanics to diagnose and rectify problems effectively. By following systematic diagnostic steps and addressing potential causes promptly, you can ensure your vehicle maintains optimal performance while adhering to emissions standards. Always prioritize safety and consult professionals when in doubt about repairs.
Frequently Asked Questions About P2087
- What does error code P2087 mean?
P2087 indicates an intermittent fault in the exhaust gas temperature sensor circuit for Bank 2 Sensor 2. - How serious is a P2087 code?
This code can lead to decreased engine performance and increased emissions; it’s advisable to address it promptly. - Can I drive my car with a P2087 code?
While it may be possible, it’s not recommended as it could lead to further engine damage. - What are common symptoms of a P2087 code?
Common symptoms include a check engine light, decreased engine performance, and unusual engine noises. - How do I fix a P2087 code?
Fixing this code typically involves replacing a faulty EGT sensor, repairing wiring issues, or addressing exhaust leaks. - Is professional help needed for a P2087 code?
If you’re unsure about diagnosing or repairing this issue, it’s best to consult a certified mechanic. - What tools do I need to diagnose a P2087 code?
An OBD-II scanner and multimeter are essential tools for diagnosing this trouble code. - How much does it cost to fix a P2087 code?
The cost can range from $100 for simple repairs up to $1,500 for PCM replacement depending on the issue.