What does engine code P2098 mean?
Diagnostic trouble code (DTC) stands for “P2098 Post Catalyst Fuel Trim System Too Lean (Bank 2). ” It means the exhaust stream on the bank 2 side contains higher oxygen levels exiting the converter than it should. This code points to a too-lean reading from the downstream sensor.
What do post cat O2 sensors do?
What Does It Do? Oxygen Sensors, commonly referred to as O2 sensors, are part of your vehicles emission system. The purpose of the downstream, after converter, sensors is to monitor the quantities of harmful exhaust gases flowing into and out of the catalytic converter to ensure the converter is working properly.
What is the p2098 OBD-II trouble code?
P2098 is an OBD-II generic code for the engine control module (ECM) detecting the post catalyst O2 sensor fuel trim is testing too lean on a two trip minimum to set the code. What causes the P2098 code?
When to use post catalytic O2 sensor error code p2098?
If the reading from the post catalytic O2 sensor circuit input shows too many O2 molecules in the exhaust, once the PCM enters its closed loop operation, the Error Code P2098 will be stored to the vehicle’s memory, while simultaneously activating the Check Engine light.
What does the PCM error code p2098 mean?
Error Code P2098 means the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes) has determined that the signal voltage input coming from the downstream (post catalytic) O2 (oxygen) converter sensor has indicated that the O2 particle content is too high.
What is the target fuel / air ratio for p2098 Bank 2?
In operation the oxygen sensor will cycle once every second and send a voltage to the computer that ranges from 0.2 rich to 0.8 for a rich mixture. The perfect mixture will average the signals around 0.45 volts. The computer’s target fuel/air ratio is 14.7:1.
What are the symptoms of a p2098 code?
The symptoms of a P2098 code will vary depending on the component or system causing the disruption in the fuel trim. Not all will be present simultaneously. Malfunction Indicator Lamp (MIL) illumination with P2098 DTC set. Rough idle.
What does p2098 post catalyst fuel trim system too lean mean?
P2098 Post Catalyst Fuel Trim System Too Lean Bank 2 1 OBD-II Trouble Code Technical Description. What does that mean? 2 Symptoms. The symptoms of a P2098 code will vary depending on the component or system causing the disruption in the fuel trim. 3 Potential Causes. 4 Diagnostic and Repair Procedures. 5 Related DTC Discussions.
In operation the oxygen sensor will cycle once every second and send a voltage to the computer that ranges from 0.2 rich to 0.8 for a rich mixture. The perfect mixture will average the signals around 0.45 volts. The computer’s target fuel/air ratio is 14.7:1.