Wednesday, January 29, 2014

P0201, P0202, P0203, P0204, P0205 and P0206 on you Jaguar X-type

Most likely problem: Injector

The codes P0201, P0202, P0203, P0204, P0205 and P0206 are flagged because the computer sees a problem with the injector circuit. To know which injector circuit is the problem, look at this diagram:



Checking the injector is easy, getting to the injector is the hard part. When you get to the injector you have to check the resistance across it, and the resistance should be between 12 to 16 Ohms. If the resistance is not withing specs, you need a new fuel injector. Here is the link to the one I recommend:
If the problem is not an injector then it's part of the circuit. The injector's circuit is very simple: one of the cables of the injector connector should have full time power with the key on, and the ground side is controlled by the computer. So the first thing you want to check is for power. Connect a test light or a voltmeter to ground and the other lead connect it to the connector at the injector at fault. With the key on check for power, there should be power in one of the two leads. If not then you know you have a power problem, which means that you have to follow the wire and see where it broke (not likely). If you do have power then it's time to check for ground. You can connect the test light to a power stud and the other pin at the injector connector. If the light blinks when you crank it it means you have ground. If not then you have a ground problem, most likely you need a new computer :(

If you do have power and ground which is the most likely scenario then you need a new fuel injector.

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