Exhaust Gas Temperature Sensor 1 Range/Performance
The P2080 code indicates that the Engine Control Module (ECM) has detected a signal from the Exhaust Gas Temperature (EGT) sensor 1 (Bank 1, Sensor 1) that is outside the expected range or performance parameters. This sensor is located before the diesel particulate filter (DPF) or catalytic converter and monitors exhaust temperature for emissions control and regeneration events. A faulty sensor, wiring issues, or exhaust leaks can cause this code.
01. Most Common Causes
- Faulty EGT sensor 1
- Open or shorted wiring/connector to sensor
- Exhaust leak near sensor
- ECM software issues
02. Symptoms You Will Notice
- Check Engine Light on
- Reduced fuel economy
- Possible limp mode or reduced power
- Failed emissions test
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data.
Step 2: Visually inspect EGT sensor wiring and connector for damage or corrosion.
Step 3: Check exhaust system for leaks near the sensor.
Step 4: Test sensor resistance and voltage with a multimeter per manufacturer specs.
Step 5: Replace sensor if readings are out of range.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe for short trips, but prolonged driving may cause reduced performance, poor fuel economy, and potential damage to the DPF or catalytic converter. It's best to diagnose and repair promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for the sensor part, plus labor if installed by a shop. DIY replacement can save on labor costs.