Focus 16tdi code p1412

SOURCE: ford focus 1.8 tdci 115bhp 2002

Turbo Wastegate (cut away) must be adjusted correctly.
A regular maintenance routine for a turbo charged vehicle will ensure proper operation and have less risk of breaking down, as well as damaging components.
To help regulate the air intake pressure a device called a waste-gate is designed to release boost at a measured pressure point

SOURCE: revs to high

Try changing your idle control valve or stepper motor which is the same thing.try cleaning it first before buying a new one,this could be done with caburetter cleaner, let dry before replacing,hope this is helping ty.

SOURCE: car revs up whilst stopped, idle problems

you need a new oxygen sensor

SOURCE: MY 1999 1.8L PASSAT HAVING THROTTLE PROBLEMS REVS

it can still cause trouble, im a former vw tech, and you would be amazed at how long they last or issues that arrise, I watched a tech install an engine once because he refused to belive radio was failed,

SOURCE: I just replaced a fuel pump on a 2001 ford focus now that is done the car runs at an idle really rough and dies down alot when i rev the motor it dies and shuts off but the car maybe runs for a minu

Hello, Is the car running better than it did before you replaced the fuel pump? I am just wondering what tests were done before the fuel pump was changed. There had to be a reason to think the old pump was bad.

There are several possibilities, one of the cheapest is to replace the fuel filter. If that does not help you should really test the fuel pressure anyway to adjust the pressure. There should be a fuel pressure Regulator inline and the test spout would be somewhere at the top of the fuelrail.

You may be able to borrow a pressure gauge at Autozone, Advance, or Oreilys as they have tool loaner programs. The Inertia sensor may trip on you and it would be good to bleed off the fuel pressure anyway when changing the fuel filter.

The fuel pump also has a Relay in the powerbox under the hood. It could be bad and overheat and kick out in a very short time. Then when the Relay cools down, the Relay could reset, giving you a small amount of fuel.

The fuel pressure Regulator and the fuel pump Relay are suppose to work in Harmony, in tandem and the Regulator acts as a buffer for the constant change in fuel demand. The fuel pump Relay could never make that many off/on cycles without failing.

If you have an Ohmmeter, you may want to check your TPS or Throttle Position Sensor. Disconnect the connector on the TPS and connect the Ohmmeter to the TPS side of the connection. With the gauge attached, move the throttle lever and see what Ohms change. There should be a smooth change both ways when the TPS operates. If jerky, replace the TPS.