U1421 DTC For Seat Leon 3
Seat Leon 3 Engine Specifications:
| Engine Type : | Multi-Cylinder Engine |
| Cylinder Type : | V-Type Engine |
| Engine Air Intake Process : | Turbocharged Engine |
Your Seat Leon 3 engine control system detects a problem, the computer stores the diagnostic trouble
code U1421 in its memory.
To figure out what is wrong with your vehicle you must first extract the U1421 DTC For Seat Leon 3.
To solve U1421 Seat Leon 3 problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs
U1421 Seat Leon 3 DTC Meaning
| U |
Network Code - Problem is climate control system, lighting, airbags, etc. |
| 1 |
MFG - Manufacturer Specific |
| 4 |
Fuel And Air Metering (Injector Circuit Malfunctions Only) |
| 2 |
Cruise Control Servo Indicates Low |
| 1 |
PCM Stack Overrun |
The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. U1421 Seat Leon 3 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.
You can also check other Seat car models :
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The listed Seat models will give information about U1421 DTC.
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