P2112 on Ford: How to Diagnose & Fix

The Ford Freestyle is subject to a significant safety issue where the vehicle surges or lunges forward unexpectedly at low speeds when in gear, even without the accelerator pedal being applied. The NHTSA investigated 238 complaints about this behavior, finding that a programming error in the engine computer causes the electronic throttle body to malfunction, particularly when the engine is under load from A/C operation, steering at full lock, or carrying heavy loads. In 18 reported cases, the surge caused accidents. Ford eventually issued a recall in December 2012 to reprogram the throttle body or replace it and reimburse owners who had already paid for the repair.

Owners report sudden reduced power, poor throttle response, and limp-home behavior due to electronic throttle body contamination/wear or throttle actuator control faults. The issue can be intermittent and may clear after a key cycle, then recur, which is a common pattern in NHTSA complaints and owner reports. It often sets throttle/ETC-related DTCs and can be triggered by carbon buildup or failing throttle position sensing.

Multiple 2017-2020 Transit Connect owners report intermittent stalling at idle or during low-speed maneuvers, traced to PCM software calibration issues. The engine drops RPMs erratically and stalls, particularly when the AC compressor engages or when transitioning from reverse to drive. Ford released TSB 19-2346 addressing this with an updated PCM calibration, but many vehicles remain unflashed.

Owners report sudden loss of power with a wrench light and reduced throttle response, often while cruising or accelerating. NHTSA complaints and Ford service information describe electronic throttle body internal faults (TPS/actuator) that can trigger ETC failsafe and limp mode on 3.7L Ti-VCT Transits. The condition may be intermittent at first and then become frequent, especially with heat/soak and higher mileage.

The electronic throttle body sticks or fails, causing the engine to enter limp mode with reduced power. The throttle plate bore wears and allows the plate to stick. May trigger wrench warning light on the dash.

The electronic throttle body suffers internal contamination/wear of the motor contacts, causing intermittent electrical failure rather than simple dirt buildup. The result is a sudden loss of power (limp/failsafe mode) with the amber wrench (powertrain) warning light, rough idle, or stalling, sometimes in traffic. Ford acknowledged the problem with extended-warranty program 13N03 for 2010-2013 models and Customer Satisfaction Program 16B32 for certain 2015-2016 vehicles including Fusion.

The electronic throttle body on the 3.5L/3.7L Cyclone V6 uses a plastic-geared motor and integrated throttle position sensors. Contamination, gear wear and sensor drift cause the PCM to lose confidence in commanded vs. actual plate position, triggering failsafe cooling mode. The vehicle drops to a fixed low-power limp mode with the wrench light on, often at highway speed, which is why owners describe it as a safety issue rather than a driveability annoyance. Ford acknowledged the pattern with customer satisfaction/warranty extension programs (13N03, 16B32) and a TSB covering 2015-2016 3.5L vehicles built on or before 31 May 2016. The failure is frequently intermittent at first: the wrench light appears, the vehicle is restarted, and normal power returns until the next episode.

Later 4th-generation Explorers with the 4.6L 3-valve V8 commonly suffer electronic throttle body problems. Owners report the wrench light illuminating, the vehicle abruptly entering fail-safe mode, and the engine losing throttle response or dropping to idle while driving. This issue is well documented across Ford products using similar electronic throttle bodies and is frequently associated with internal motor or throttle position sensor faults.

The CD3 Edge uses a Ford electronic throttle body (ETB) with an integrated throttle position sensor. Non-conductive deposits build up on the internal sensor contacts, so the PCM sees an implausible or drifting throttle plate position and drops the vehicle into failsafe/limp mode - the amber wrench warning lights up and engine output is cut to idle-ish power, often at highway speed with no warning. Owners describe it as the truck 'just quitting on me' merging or passing, sometimes clearing after a key cycle and then recurring more frequently. Cleaning the throttle bore does not fix it because the fault is on the electronic contacts inside the sealed unit, not carbon on the plate. Ford acknowledged the family-wide ETB problem with extended coverage programs on several models, and the failure is heavily represented in NHTSA complaints for the Edge.

Contacts inside the electronic throttle body motor can build up high-resistance material, causing an intermittent connection and a sudden loss of engine power. The check engine or wrench light comes on and the engine may be held near 900 rpm in a limp-home mode, while power steering, brakes, lights and climate control keep working. Applies to: 2009-2013 Ford Escape with the 2.5L or 3.0L engine (NHTSA Preliminary Evaluation PE13-003, which also covered Mercury Mariner, Ford Fusion and Mercury Milan). Ford's Customer Satisfaction Program 13N03 extended coverage to 10 years or 150,000 miles from the warranty start date; that coverage has expired for these model years.