2014 - 2017 Corvette: GM TechLink: Repeat DTCs P2096 and P2098
Some 2014 - 2017 Corvette models equipped with the 6.2L V8 engine (RPO LT1) and 8L90 automatic transmission (RPO M5U) may have an illuminated Check Engine MIL and repeat DTCs P2096 (Post Catalyst Fuel Trim System Low Limit Bank 1) and P2098 (Post Catalyst Fuel Trim System Low Limit Bank 2) set.
DTCs P2096 and P2098 may set when the driver continuously taps the accelerator pedal (on – off – on – off) to maintain speed.
Fuel trim bias is used to keep the post catalyst air/fuel ratio within a predetermined range, which allows optimal catalyst efficiency under various operating conditions. The Engine Control Module (ECM) constantly monitors how lean or rich the fuel trim bias is commanded to determine if the fuel trim bias is greater than a calibrated amount.
GM Engineering is currently evaluating this condition. At this time, it is considered a normal vehicle operating characteristic.
– Thanks to Richard Renshaw
- Source: GM TechLink: August 18, 2017