What Does P2474 Mean?
The exhaust gas temperature sensor 4 on bank 2 is reporting values that are out of expected range or not responding appropriately to changing exhaust conditions. The sensor may be reading too high, too low, or responding too slowly compared to other EGT sensors.
Common Causes
40%
Degraded or contaminated EGT sensor 4 reading inaccurately
25%
Exhaust leak near sensor affecting temperature readings
20%
Carbon buildup or soot contamination on sensor element
10%
High resistance in wiring or connector causing signal degradation
5%
DPF or catalytic converter issues affecting exhaust temperature profile
Diagnostic Steps
1
Step 1: Compare bank 2 sensor 4 readings to other EGT sensors during various operating conditions using live data
2
Step 2: Inspect exhaust system around sensor 4 for leaks, damage, or loose connections
3
Step 3: Remove sensor and inspect element for carbon deposits, contamination, or physical damage
4
Step 4: Check sensor response time by monitoring temperature rise during acceleration; should respond within 2-3 seconds
5
Step 5: If sensor appears clean and responds normally on bench test, check exhaust flow restrictions downstream
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The exhaust gas temperature sensor 4 on bank 2 is reporting values that are out of expected range or not responding appropriately to changing exhaust conditions. The sensor may be reading too high, too low, or responding too slowly compared to other EGT sensors.
The most common cause of P2474 (Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4) is: Degraded or contaminated EGT sensor 4 reading inaccurately
Typical repair costs for P2474 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive but inaccurate temperature readings can cause improper DPF regeneration cycles. May lead to incomplete regeneration or excessive regeneration attempts, reducing fuel economy.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2474 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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