Why Your Post Catalyst Fuel Trim System Is Too Rich
If you've hooked up a scanner and seen a code for a post catalyst fuel trim system too rich condition, you're probably wondering why your car is suddenly acting like a gas-guzzling teenager. This usually points to a P2097 or P2099 code, depending on which side of the engine is acting up. It basically means the oxygen sensor located after your catalytic converter thinks there is way too much fuel left over in the exhaust stream. ...