P2200 Fault Code

NOx Sensor Circuit Bank 1

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

The P2200 fault code indicates a problem with the NOx (Nitrogen Oxide) sensor circuit for bank 1. This sensor measures the amount of NOx emissions produced by the engine, which is crucial for optimizing performance and reducing harmful exhaust emissions. When the NOx sensor circuit encounters an issue, it can lead to increased emissions and may trigger the check engine light.

What are the symptoms of the P2200 code?

Symptoms associated with the P2200 code can include:

• Illuminated check engine light
• Decreased engine performance
• Increased emissions
• Possible rough idling or stalling in severe cases.

What causes the P2200 code?

Common causes of the P2200 fault code may include:

• A faulty NOx sensor
• Wiring issues such as frayed or damaged wires
• Poor electrical connections or corroded connectors
• Issues in the engine control module (ECM)
• Exhaust leaks that may affect sensor readings.

How to fix P2200?

To resolve the P2200 fault code, consider the following steps:

1. Inspect the NOx sensor for any visible damage or corrosion.
2. Check the wiring and connectors associated with the NOx sensor for any faults.
3. If the sensor appears defective, replace it with a new one.
4. Clear the fault code and perform a test drive to ensure the issue is resolved.
5. If the problem persists, further diagnostics of the ECM and exhaust system may be necessary.