What Does P246F Mean?
Exhaust gas temperature sensor 4 on bank 1 is providing readings that are outside expected parameters or not responding appropriately to exhaust temperature changes. The sensor is functioning but the values are implausible compared to other sensor data or operating conditions.
Common Causes
35%
Degraded or failing EGT sensor with drift
25%
Exhaust leak near sensor affecting temperature readings
20%
Carbon buildup or contamination on sensor element
12%
Sensor installed incorrectly or not fully seated
8%
High resistance in wiring causing signal attenuation
Diagnostic Steps
1
Step 1: Compare EGT sensor 4 readings to other EGT sensors during warm-up and at operating temperature; values should be logical for sensor position
2
Step 2: Inspect exhaust system near sensor for leaks that could affect temperature readings
3
Step 3: Check sensor installation depth and ensure proper seating in exhaust bung
4
Step 4: Measure sensor resistance at various temperatures and compare to specifications
5
Step 5: Replace sensor if readings remain out of range after verifying installation and exhaust integrity
Estimated Repair Cost
$175 - $500
Parts + labor, varies by vehicle and location
Exhaust gas temperature sensor 4 on bank 1 is providing readings that are outside expected parameters or not responding appropriately to exhaust temperature changes. The sensor is functioning but the values are implausible compared to other sensor data or operating conditions.
The most common cause of P246F (Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 4) is: Degraded or failing EGT sensor with drift
Typical repair costs for P246F range from $175 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but emissions system monitoring is inaccurate. May lead to improper DPF regeneration or catalyst efficiency concerns if not addressed.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P246F to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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