U0421 DTC For Ford E Series
Ford E Series Engine Specifications:
| Engine Type : | Multi-Cylinder Engine |
| Cylinder Type : | In-Line Engine |
| Engine Air Intake Process : | Naturally Aspirated |
Your Ford E Series 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 E Series.
On 1999 and later U0421 Ford E Series 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 E Series 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 |
OBD U0421 Ford E Series code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and U0421, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to U0421 DTC For Ford E Series malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for U0421 DTC For Ford E Series and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.
You can also check other Ford car models :
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The listed Ford models will give information about U0421 DTC.
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