P2083: Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 1
The P2083 code indicates an intermittent electrical issue in the exhaust gas temperature (EGT) sensor circuit for Bank 2, Sensor 1. This sensor monitors exhaust temperature to protect the catalytic converter and DPF. An intermittent fault means the signal is lost or erratic, often due to wiring damage, loose connections, or sensor failure. This can lead to incorrect temperature readings, affecting engine performance and emissions control.
1. Most Common Causes
- Faulty exhaust gas temperature sensor (EGTS) due to thermal cycling degradation
- Damaged, melted, or high-resistance wiring or connector from exhaust heat exposure
- Intermittent short to ground or reference voltage in the sensor harness
- Loose, corroded, or poorly seated connector terminals at the sensor or PCM
- Intermittent internal PCM fault (rare)
2. Symptoms You Will Notice
- Check Engine Light on
- Reduced fuel economy
- Possible limp mode or reduced power
- Increased emissions
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect EGT sensor wiring and connector for damage or corrosion.
Step 3: Check sensor resistance and compare to specs; test for intermittent opens/shorts.
Step 4: Clear code and test drive to see if it returns; if intermittent, wiggle test harness.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It may be safe for short trips, but prolonged driving can damage the catalytic converter or DPF. It's best to diagnose promptly.
How much does it cost to fix?▼
Typically $50-$150 for diagnosis and repair, but sensor replacement can cost $100-$300 including labor.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.