Exhaust Gas Temperature Sensor Out of Range Bank 2 Sensor 1
The P247C code indicates that the exhaust gas temperature (EGT) sensor located before the catalytic converter on Bank 2 (the side opposite cylinder #1) is reporting a temperature reading outside the expected range. This sensor monitors exhaust temperature to protect the catalytic converter and diesel particulate filter (if equipped) from overheating. An out-of-range reading can be caused by a faulty sensor, wiring issues, or actual exhaust temperature extremes. Driving with this code may lead to reduced engine performance, increased emissions, and potential damage to emission control components.
01. Most Common Causes
- Faulty EGT sensor (Bank 2 Sensor 1)
- Damaged or corroded wiring/connector
- Exhaust leak near the sensor
- Engine running too hot (overheating)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor fuel economy
- Possible overheating of catalytic converter
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the EGT sensor and wiring for damage or corrosion.
Step 3: Compare EGT sensor reading with a known good sensor using a scan tool.
Step 4: Check for exhaust leaks near the sensor.
Step 5: Test sensor resistance and voltage per manufacturer specifications.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances. The code can lead to catalytic converter damage or reduced engine performance. Have it diagnosed promptly.
How much does it cost to fix?▼
Replacing the EGT sensor typically costs between $150 and $400 including parts and labor, depending on vehicle make and model.