Conditions for Running the DTC
WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
DTC P018B
- DTCs P018C, P018D, P0231, P0232, P023F, P0641, P1255, P129D, or P12A6 are not set.
- Engine is running
- Fuel pressure is greater than 0 PSI
- The DTC runs continuously when the conditions above are met.
DTC P018C or P018D
- The engine is cranking or running.
- The DTCs run continuously when the condition above is met.