Exhaust Gas Temperature Sensor 3 Bank 2 Out of Range
The P247E code indicates that the exhaust gas temperature (EGT) sensor 3 on bank 2 is reporting a value outside the expected range. This sensor monitors exhaust temperature to protect the catalytic converter and diesel particulate filter (DPF) from overheating. The out-of-range condition can be caused by a faulty sensor, wiring issues, or actual exhaust temperature extremes. If the sensor reading is implausibly high or low, the PCM may trigger this code and potentially limit engine power or disable regeneration.
01. Most Common Causes
- Faulty exhaust gas temperature sensor 3 bank 2
- Open or shorted wiring to the sensor
- Poor electrical connection at the sensor connector
- Exhaust leak near the sensor causing inaccurate readings
- PCM software issue or internal fault
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor fuel economy
- DPF regeneration issues or frequent regeneration
- Possible overheating of exhaust components
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to read the code and freeze frame data to confirm conditions.
Step 2: Visually inspect the EGT sensor 3 on bank 2 for damage, corrosion, or loose connection.
Step 3: Test the sensor resistance and compare to manufacturer specifications (typically 100-200 kΩ at room temperature).
Step 4: Check the wiring harness for shorts, opens, or chafing between the sensor and PCM.
Step 5: If wiring and sensor are good, clear the code and test drive to see if it returns; if so, replace the sensor.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances with this code, as it can lead to overheating of the catalytic converter or DPF, causing expensive damage. Limp mode may also reduce drivability.
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 is about $100-$250 depending on accessibility.