2010 Ford Fusion fuel system problems

The electronic throttle body fails without warning, causing sudden, complete loss of throttle response and forcing the vehicle into limp mode at ~1,000 RPM, unable to exceed 10–15 MPH. The wrench light and/or check engine light illuminate. The engine idles roughly or shakes violently. Restarting the vehicle temporarily restores normal operation, but the failure recurs within minutes to hours, often multiple times per week.

When: Occurs at any speed (highway, city, low-speed turns); can happen after 30,000 miles or later in vehicle life; some owners report occurrence on first or second day of ownership of used vehicle

Symptoms owners cite: Sudden loss of throttle response—accelerator pedal becomes unresponsive; Vehicle lurches, jerks, or shakes violently; Engine idles extremely rough or rough idle; Engine stalls or nearly stalls; Wrench light illuminates on dashboard; Check engine light may also illuminate; Vehicle enters limp mode, maximum speed drops to 10–15 MPH; Engine sounds like it is coughing or misfiring; Ability to control vehicle compromised in traffic

Codes mentioned: P2111 (Throttle actuator control system stuck open), P2112 (Throttle actuator control system stuck closed)

Repairs/costs cited: Electronic throttle body replacement required; parts cite $300–$700 in repair costs. Ford parts on nationwide backorder; dealers report 3–4 week waits or longer, with multiple customers ahead in queue. Owners also cite $95–$150 diagnostic fees. Some owners note that dealers initially misdiagnosed failure as MAF sensor issue (quoted ~$500), then replacement attempted without success, requiring throttle body replacement after all. At least one narrative (#1) mentions a dealer cleaning the throttle body, after which the car worked fine temporarily, suggesting some failures are intermittent or dirt-related, though eventual replacement expected.

Recalls/TSBs owners mention: TSB 10-21-6 addresses electronic throttle body on 7T4Z-9E926-FA and 8S4Z-9E926-B parts. Ford Corporate statement cited in narrative #5 stated: 'WE APOLOGIZE FOR THE INCONVENIENCE THIS MAY HAVE CAUSED YOU. WE HIGHLY RECOMMEND THAT YOUR VEHICLE BE INSPECTED BY YOUR SERVICING FORD DEALERSHIP…' No recall issued as of complaint dates (2013). Owners report Ford dealers aware of widespread problem ('replacing them left and right') but parts are on national backorder with no ETA. Powertrain warranty does not cover throttle body on some vehicles due to emissions classification; owners outside factory warranty required to pay full repair cost. Ford ordered suppliers to manufacture at least 1,000 replacement throttle bodies to address problem for cars still under warranty. One owner (narrative #26) mentions a 'one-time repair program' and powertrain update offered, but unclear if this is blanket coverage or limited eligibility.

Fuel tank develops crack and begins leaking gasoline. In some cases, excessive fuel-system pressure from a defective canister purge valve is cited as the cause of the tank cracking. Owner reports strong fuel odor in cabin lingering for days after refueling, followed by visible fuel pooling beneath the vehicle, typically at rear. One narrative (#32) indicates vehicle shut off at 50 MPH on highway after tank failure was diagnosed.

When: Occurs after refueling or during normal driving; reported at 160,000 and 210,000 miles in two narratives

Symptoms owners cite: Strong gasoline odor detected in cabin after refueling, lingering for days; Visible fuel leak/pooling beneath vehicle, typically at rear; Air seeping/leaking sound from rear of vehicle; Check engine light illuminates (in at least one case); Vehicle shut off during highway driving (one case at 50 MPH)

Codes mentioned: Check engine light (related diagnostic code not specified in narratives)

Repairs/costs cited: Fuel tank replacement cost estimated at ~$900; one narrative indicates new shop needed to replace full tank after defect diagnosis (original dealer only sealed tank with JB Weld adhesive, which failed). One narrative (#28) mentions dealer quoted ~$1,000 to replace fuel pump, but second opinion revealed tank was the true problem, requiring ~$900 replacement. Parts on backorder; at least one vehicle waited over a week for part arrival and labor.

Recalls/TSBs owners mention: NHTSA Campaign 15V793000 (Fuel System, Gasoline, 2016 recall) is referenced in later narratives. However, owners report that the recall may not have covered all affected VINs, or that recall service was improperly completed (one narrative mentions tank sealed with JB Weld instead of properly replaced, and dealer claimed recall was completed despite visible leak). One owner informed that vehicle was not included in recall despite matching the failure symptoms. Manufacturer was not formally notified in some cases; instead, owners discovered the recall via online research after independent mechanic diagnosis.