Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5
The P2487 code indicates that the Engine Control Module (ECM) has detected a high voltage signal from the exhaust gas temperature (EGT) sensor located in bank 2, sensor 5. This sensor monitors the temperature of the exhaust gases to protect the catalytic converter and diesel particulate filter (DPF) from overheating. A high circuit condition typically means the sensor signal voltage is above the expected range, which can be caused by a faulty sensor, wiring issues, or a short circuit. This code is common in diesel engines with aftertreatment systems.
01. Most Common Causes
- Faulty exhaust gas temperature sensor
- Short circuit to voltage in sensor wiring
- Corroded or damaged connector
- ECM software or hardware issue
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance or limp mode
- Increased exhaust emissions
- Possible regeneration issues in diesel engines
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data.
Step 2: Visually inspect the EGT sensor and wiring for damage or corrosion.
Step 3: Measure sensor resistance and compare to specifications; test for short to voltage.
Step 4: Check ECM for software updates or faults.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can lead to overheating of the exhaust system and potential damage to the catalytic converter or DPF. Limp mode may activate, reducing power.
How much does it cost to fix?▼
The cost typically ranges from $150 to $400, including parts and labor. The sensor itself costs $50-$150, and labor adds $100-$250 depending on accessibility.