Fuel economy is not a fixed number.
It varies based on driving conditions,
driving habits and vehicle condition.
Therefore, it is not possible for one
set of estimates to predict fuel
economy
The following factors can lower your
vehicle’s fuel economy:
Aggressive driving (hard acceleration and braking)
Excessive idling, accelerating and braking in stop-and-go traffic
Cold engine ope
Vehicle Maintenance
A properly maintained vehicle
maximizes fuel economy. Poor
maintenance can significantly reduce
fuel economy. Always maintain your
vehicle according to the maintenance
m
NOTE:
Before you troubleshoot, record all freeze data and any on-board
snapshot, and review the general troubleshooting information.
If DTC P0101, P0108, P1128, and/or P1129 are stored
at the same time as DTC P2221, troubleshoot those
DTCs first, then recheck for DTC P2221.
1. Turn the ignit
Electronic Control System
The functions of the fuel and emission control systems are managed by the
powertrain control module (PCM).
Self-diagnosis
The PCM detects a failure of a signal from a sensor or from another control
unit and stores a Temporary DTC or a DTC.
Depending on the failure, a DTC