U0421 DTC For Ford Tourneo Connect

Ford Tourneo Connect Engine Specifications:
Engine Type :Single Cylinder Engine
Cylinder Type :Opposite Piston Engine
Engine Air Intake Process :Supercharged Engine

Your Ford Tourneo Connect engine control system detects a problem, the computer stores the diagnostic trouble code U0421 in its memory. To figure out what is wrong with your vehicle you must first extract the U0421 DTC For Ford Tourneo Connect.

On 1999 and later U0421 Ford Tourneo Connect engines, the instrument cluster has a built-in self-diagnostic mode that can be accessed by pressing and holding the instrument cluster SELECT/RESET button. Insert the ignition key and turn to the RUN position (but don't crank or start engine). Continue to press and hold the SELECT/RESET button (for 5 seconds) until the word TEST is displayed by the odometer. Release the SELECT/RESET button within three seconds after the word TEST is displayed to begin the self-diagnostic mode.

U0421 Ford Tourneo Connect DTC Meaning

U Network Code - Problem is climate control system, lighting, airbags, etc.
0 SAE - Generic
4 Fuel And Air Metering (Injector Circuit Malfunctions Only)
2 Cruise Control Servo Indicates Low
1 PCM Stack Overrun

If your vehicle failed a U0421 Ford Tourneo Connect test and the U0421 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses U0421 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look U0421 DTC For Ford Tourneo Connect: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.

U0420 DTC (Previous DTC Code) ( Next DTC Code ) U0422 DTC
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The listed Ford models will give information about U0421 DTC.