P2088: Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2
The P2088 code indicates an intermittent electrical issue in the exhaust gas temperature (EGT) sensor circuit for Bank 2, Sensor 2. 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 a failing sensor. The PCM detects voltage or resistance outside expected range, triggering the code.
01. Most Common Causes
- Faulty exhaust gas temperature sensor
- Damaged or corroded wiring/connector
- Loose electrical connection
- Exhaust leak near sensor
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 codes and record freeze frame data.
Step 2: Visually inspect EGT sensor wiring and connector for damage or corrosion.
Step 3: Test sensor resistance and compare to specs (typically 100-200k ohms at room temp).
Step 4: Check for exhaust leaks near sensor that could cause intermittent readings.
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 damage the catalytic converter or DPF. Have it diagnosed soon.
How much does it cost to fix?▼
Typical repair costs range from $50 to $150 for DIY sensor replacement, or $150-$300 at a shop including labor.