What Does P247F Mean?
The exhaust gas temperature sensor 4 on bank 2 is reporting temperatures outside the acceptable range. This sensor is typically the furthest downstream in the exhaust system. The PCM has determined the temperature reading is implausible based on engine operating conditions.
Common Causes
50%
Faulty EGT sensor 4 providing out-of-range voltage signals
25%
Corroded or damaged sensor wiring causing erratic signals
15%
Exhaust system leaks affecting temperature measurement accuracy
10%
PCM software calibration issues or internal faults
Diagnostic Steps
1
Step 1: Compare live EGT sensor 4 readings with other exhaust temperature sensors to identify discrepancies
2
Step 2: Inspect sensor location for physical damage, excessive carbon deposits, or exhaust leaks
3
Step 3: Test sensor resistance at ambient temperature and verify it falls within manufacturer specifications
4
Step 4: Check voltage signal at PCM connector with engine at operating temperature (should be 0.5-4.5V typically)
5
Step 5: Verify ground circuit integrity and check for voltage drops in power supply circuit
Estimated Repair Cost
$150 - $550
Parts + labor, varies by vehicle and location
The exhaust gas temperature sensor 4 on bank 2 is reporting temperatures outside the acceptable range. This sensor is typically the furthest downstream in the exhaust system. The PCM has determined the temperature reading is implausible based on engine operating conditions.
The most common cause of P247F (Exhaust Gas Temperature Out of Range Bank 2 Sensor 4) is: Faulty EGT sensor 4 providing out-of-range voltage signals
Typical repair costs for P247F range from $150 to $550, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe for short-term driving, but may affect emissions system performance and fuel economy. Vehicle may enter reduced power mode to protect components.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P247F to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
