What is the P2097 fault number? What is the reason for the Post Catalyst Fuel Trim System Too Rich Bank I fault? How do I fix the P2097 fault code What are the causes and symptoms of the P2097 error code?
What is the P2097 Fault Coding? What does it signify?
The air/fuel ratio must always be adjusted to ensure the engine runs at its best. The oxygen sensors (O2) are responsible for measuring the oxygen levels in exhaust stream and advising the powertrain control module. This allows the PCM, to adjust the fuel/air mixture as necessary.
If the mixture has too much oxygen, it will be considered “poor”, and “rich” when it is not enough. The manufacturer of the vehicle has already programmed the required values into its PCM.
The oxygen sensor after the converter sends a voltage signal (P2097) to the PCM indicating a “rich” condition. In the description of the code, “Bank 1” refers to the engine bank that contains first cylinder.
The P2097 fault code can affect vehicles of various manufacturers, including Dodge, GMC and Chevrolet, Mercedes-Benz, Nissan, Subaru.
What causes the P2097 Fault code?
Here are some reasons why P2097 should be set.
- – Conditions that make the engine run in a rich mixture
- Leaks in your exhaust system
- – Bank 1: Defective post catalytic convert oxygen sensor
- Damaged wires, loose connectors and open or short circuit problems with the O2 sensor circuit
- – A PCM that is not working or requires a software upgrade
What are the symptoms for the P2097 fault code?
These symptoms may be present in vehicles with code P2097.
- – Illumination at the check engine lights
- – Low engine performance
- – Increased fuel consumption
- – RPM fluctuations when idle
- – Engine hesitation during acceleration
- Engine misfires
- – When it is hot the engine starts very hard or stops after starting
- Some cases may have a fuel smell
- – Black smoke from the exhaust may be possible in extreme situations
- Other fault codes may also be possible
How do I fix the P2097 fault code?
- – Clear all codes first. Then, a road test should be performed to verify that it will return.
- – Repair of exhaust leaks
- Replacing an oxygen sensor that is not working (Bank 1 Sensor 2).
- – Repair of the oxygen sensor circuit wiring and connectors
- – Repairing O2 sensor short circuits or open
- – Replacing/reprogramming the PCM
It is easy to detect exhaust leaks. There are two methods to test the exhaust system. The first method is to look at the exhaust and check for any soot. If you see soot traces, it is likely that the exhaust is leaking. Leakages smaller in size are often detected while the vehicle’s running. To feel the escaping gas, you can run your fingers around the exhaust system. You should take care as it can cause burns.
How Serious Is the P2097 Fault Code
The code P2097 could cause the vehicle not to start or display no signs of malfunction. The vehicle should be stopped from being used until the problem is resolved.
