Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
Is the MAF PID at idle and NEUTRAL between 0.35 volt and 1.3 volts?
Yes | No |
|---|---|
GO to DC14 . | GO to DC13 . |
DC13 CHECK TO ISOLATE THE MAF SENSOR FROM A LEAN DRIVEABILITY OCCURRENCE
Note: Due to increasingly stringent emission/OBD requirements, a fuel system DTC on some vehicles can be generated without a noticeable driveability concern with or without the MAF sensor disconnected.
• Ignition OFF.
• MAF/IAT Sensor connector disconnected.
• Ignition ON, engine running.
• Drive the vehicle on the road.
Is the lack of power, spark knock/detonation, buck/jerk or hesitation/surge on acceleration driveability symptom gone?
Yes | No |
|---|---|
CLEAN the MAF/IAT sensor using CRC Mass Air Flow Sensor Cleaner 05110 or equivalent. RESET the keep alive memory (KAM). REFER to Section 2, Resetting The Keep Alive Memory (KAM). REPEAT the self-test. If the concern is still present, INSTALL a new MAF/IAT sensor. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls. RESET the keep alive memory (KAM). REFER to Section 2, Resetting The Keep Alive Memory (KAM). REPEAT the self-test. | GO to DC14 . |
DC14 VERIFY THE DTC
Are DTCs P0171, P0172, P0174, P0175, P2195, P2196, P2197, or P2198 present?
Yes | No |
|---|---|
GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions. | GO to DC23 . |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.