Chart 7

WARNING: This page is about a different variant/trim than selected.

Poor Fuel Economy

NOTE: Since driving styles can have a significant influence on fuel economy, verify the concern before starting an in-depth diagnosis. Also, the following external factors could contribute to poor fuel economy conditions:

Stop/go driving
Improper tire pressure/size
Vehicle loads (such as trailer towing)
Extended winter warm-up conditions
High speed driving
Regenerative braking disabled
High traction battery temperatures
Improper axle ratio
Road/weather conditions
Aftermarket add-ons
Short run operations
Customer expectations

SYSTEM/COMPONENT	REFERENCE (Pinpoint Test Unless Noted)
Transaxle Fluid Level	Visual. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (eCVT) - HYBRID ESCAPE .
Check the following PIDs: LONGFT1 (value between -20 and +20) VPWR (value between 10.5 and 17.0 volts, and within 0.5 volt of battery voltage)	LONGFT1 value low (-): Continue diagnosis. Concentrate checks in areas that cause the engine to run rich. LONGFT1 value high (+): Continue diagnosis. Concentrate checks in areas that cause the engine to run lean. VPWR not between 10.5 and 17.0 volts: REFER to CHARGING SYSTEM - GENERAL INFORMATION - ESCAPE & MARINER . VPWR between 10.5 and 17.0 volts, but not within 0.5 of battery voltage: CHECK the B+ supply to the power relay. CHECK the VPWR circuit between the PCM and the power relay. CHECK the PWR GND circuits.
Verify engine operates at normal temperature	Visual. REFER to ENGINE COOLING - HYBRID ESCAPE , to diagnose any cooling system concerns that are present.
Secondary Ignition System	GO to Pinpoint Test JB .
Fuel System	GO to Pinpoint Test HC .
Exhaust System	GO to Pinpoint Test HF .
Automatic Transaxle	REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (eCVT) - HYBRID ESCAPE .
PCV System	GO to Pinpoint Test HG .
Additional Checks: Correct PCM vehicle identification (VID) block information. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . Brake drag Base engine concerns Incorrect PCV valve Contaminated MAF sensor Intake air system	REFER to the applicable repair information article.
Additional Testing	GO to Pinpoint Test Z .