Conditions for Running the DTC

P018B

• DTC P018C, P018D, P0231, P0232, P023F, P0606, P0641, or P1255 is not set.
• The engine is running for greater than 5s.
• The fuel pump enable circuit is commanded ON.
• Low fuel level warning not present.
• The DTC runs continuously when the conditions above are met.

P018C or P018D

• The engine is cranking or running.
• The DTCs run continuously when the condition above is met.