Conditions for Running the DTC

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

The battery is between 10.5-16.0 volts.
The engine operating time is between 4.25 and 8.5 minutes.
Vehicle speed is less than 90 km/h (56 mph).
No current misfire is detected.
OR
The battery is between 10.5-16.0 volts.
The engine has been operating for more than 8.5 minutes.
Vehicle speed is more than 40 km/h (25 mph).
No current misfire is detected.
DTC P0037 runs continuously once the above conditions have been met.