P2031 Fault Code

Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2031 fault code indicates an issue with the exhaust gas temperature (EGT) sensor circuit for Bank 1, specifically for sensor 2. This sensor measures the temperature of the exhaust gases entering the catalytic converter and is crucial for monitoring the efficiency of the emission system. When this code is triggered, it typically means that the sensor is not functioning properly or there is a problem in its circuit.

What are the symptoms of the P2031 code?

Symptoms associated with the P2031 code may include:

• Check Engine Light illuminated
• Decreased fuel efficiency
• Poor engine performance
• Increased emissions
• Potential overheating of the catalytic converter due to improper temperature monitoring

What causes the P2031 code?

Common causes for the P2031 code include:

• Faulty exhaust gas temperature sensor
• Open or short circuit in the sensor wiring
• Poor electrical connections
• Issues with the engine control module (ECM)
• Exhaust leaks affecting sensor readings

How to fix P2031?

To resolve the P2031 fault code, follow these steps:

1. Inspect the exhaust gas temperature sensor and its wiring for any visible damage or disconnection.
2. Test the sensor with a multimeter to ensure it is reading the correct temperature.
3. Repair or replace any damaged wiring or connectors.
4. If the sensor is faulty, replace it with a new one.
5. Clear the fault codes from the ECM and take the vehicle for a test drive to ensure the issue is resolved.