P2178 or P2188
WARNING: This page is about a different car, the 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- The long term FT weighted average value is less than a calibrated value at idle, cruise or during acceleration.
- The DTCs set when the above condition is met for 4 seconds continuously, or for 50 seconds cumulatively.