What Does P2080 Mean?
The exhaust gas temperature sensor located before the catalytic converter on Bank 1 is reading outside the expected range for current operating conditions. The sensor signal doesn't correlate with engine load, speed, or other EGT sensor readings.
Common Causes
40%
Faulty exhaust gas temperature sensor with degraded element
25%
Exhaust leak before sensor affecting temperature readings
20%
Carbon buildup on sensor tip causing slow response or inaccurate readings
10%
Sensor wiring harness damage or high resistance connection
5%
Incorrect sensor installation or sensor not fully seated
Diagnostic Steps
1
Step 1: Compare Bank 1 Sensor 1 EGT readings with Bank 2 Sensor 1 (if equipped) and downstream sensors using live data
2
Step 2: Inspect exhaust system for leaks before the sensor location using visual and audible inspection
3
Step 3: Check sensor resistance at room temperature and compare to specifications (typically 200-400 ohms at 68°F)
4
Step 4: Remove sensor and inspect tip for carbon buildup, physical damage, or oil contamination
5
Step 5: Monitor sensor response time during snap throttle test; sensor should respond within 1-2 seconds
Estimated Repair Cost
$150 - $450
Parts + labor, varies by vehicle and location
The exhaust gas temperature sensor located before the catalytic converter on Bank 1 is reading outside the expected range for current operating conditions. The sensor signal doesn't correlate with engine load, speed, or other EGT sensor readings.
The most common cause of P2080 (Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1) is: Faulty exhaust gas temperature sensor with degraded element
Typical repair costs for P2080 range from $150 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but emission system protection may be compromised. DPF regeneration may not occur properly, potentially leading to filter damage over time.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2080 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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