P2082: Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 1
The P2082 code indicates that the Engine Control Module (ECM) has detected a malfunction in the exhaust gas temperature (EGT) sensor circuit for Bank 2, Sensor 1. This sensor monitors the temperature of exhaust gases entering the diesel particulate filter (DPF) or catalytic converter. The ECM compares the sensor's signal to expected values; if the signal is out of range or the sensor response is slow, this code sets. Common causes include a faulty EGT sensor, wiring issues, or exhaust leaks. This code is often accompanied by reduced engine performance or illumination of the check engine light.
1. Most Common Causes
- Faulty or aged exhaust gas temperature (EGT) sensor
- Sensor wiring shorted to ground or voltage
- Loose, corroded, or poor electrical connections in the sensor harness
- High resistance in the sensor circuit (broken or frayed wires)
- Internal engine control module (ECM) failure (uncommon)
- Exhaust system leaks altering actual temperature readings
2. Symptoms You Will Notice
- Check Engine Light on
- Reduced engine power or limp mode
- Poor fuel economy
- Possible regeneration issues in diesel engines
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the EGT sensor and wiring for damage or corrosion.
Step 3: Test sensor resistance and compare to manufacturer specs.
Step 4: Check for exhaust leaks near the sensor.
Step 5: If all else fails, replace the EGT sensor and clear codes.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally not recommended to drive long distances with this code, as it can lead to reduced performance, poor fuel economy, and potential damage to the DPF or catalytic converter. In some cases, the vehicle may enter limp mode.
How much does it cost to fix?▼
The cost to fix P2082 typically ranges from $50 to $150 for parts and labor, depending on the vehicle and shop rates. The sensor itself is often $30-$80, with labor adding $20-$70.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.