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Fiat Stilo P1121 Engine Trouble Code

Fiat Stilo P1121 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

Fiat Stilo P1121 Code Meaning :

P 1 1 2 1
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Fuel Rail/System Pressure - Too High Turbocharger Boost Sensor A Circuit Low Crankshaft Position Sensor A Circuit Low Input
Fiat Stilo Engine

When you check Fiat Stilo car engine light came on code P1121 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the P1121 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P1121 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting
If one of these reasons for P1121 code is occuring now you should check P1121 repair processes.
Now don't ask yourself; What should you do with P1121 code ?
The solution is here :

Fiat Stilo P1121 Possible Solution :

Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.

P1121 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1121 OBD-II Trouble Code Electric Throttle Control Actuator is one of the definitions for the P1121; however your vehicles manufacturer may have a different definition for the P1121 code. Please check below for your specific P1121 code.

Reason For P1121 Code

The reason of P1121 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

Parts or components should not be replaced with reference to only a P1121 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.