P2034 Fault Code

Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2

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

The P2034 fault code indicates a problem with the Exhaust Gas Temperature (EGT) Sensor Circuit located on Bank 2, Sensor 2. This sensor is crucial for monitoring the temperature of exhaust gases in the emission control system, helping to ensure the engine operates efficiently and in compliance with emissions regulations. If this sensor malfunctions, it can lead to increased emissions and potential damage to the engine components.

• The EGT sensor measures the temperature of exhaust gases to provide feedback for the engine control module (ECM).
• Bank 2 refers to the side of the engine opposite cylinder bank 1, typically the side with the even-numbered cylinders.
• Sensor 2 indicates that it is the second sensor in the exhaust system, often located downstream of the turbocharger or catalytic converter.

What are the symptoms of the P2034 code?

Symptoms or signs that may indicate a P2034 fault code include:

• Check Engine Light illuminated on the dashboard.
• Decreased engine performance or efficiency.
• Increased emissions, potentially leading to a failed emissions test.
• Unusual smells from the exhaust.
• Engine stalling or rough idling in severe cases.

What causes the P2034 code?

Common causes of the P2034 fault code may include:

• A faulty exhaust gas temperature sensor.
• Damaged wiring or connectors in the EGT sensor circuit.
• A malfunction in the engine control module (ECM).
• Exhaust leaks allowing for incorrect readings from the sensor.
• Corrosion or dirt buildup on the sensor or its connectors.

How to fix P2034?

To resolve the P2034 fault code, a series of steps should be undertaken:

• Perform a diagnostic scan to confirm the fault code and check for any additional related codes.
• Inspect the EGT sensor and its wiring harness for any visible damage or corrosion.
• Test the EGT sensor for proper operation and replace if it’s found to be faulty.
• Ensure all connectors are secure and free from dirt or corrosion.
• Clear the fault codes and take the vehicle for a test drive to monitor for reoccurrence.