Thursday, January 2, 2014

P0196, P0197, and P0198 on your Jaguar X-type

P0196, P0197, and P0198 are flagged when the computer sees a problem with the oil temperature sensor. Diagnosing these codes is simple, unplug the sensor, hook up your voltmeter leads (needle like leads so you don't damage the sensor) and see if you read a reference voltage (usually around 5 volts) If you do see 5 volts then you most likely need a new sensor. If you don't then there is a problem with the wiring going to the sensor (this is not likely since wires don't usually go bad by themselves) or the most likely reason is the computer. The first time I would try to clear the fault to make sure it wasn't just a fluke since this is not a very common code. Also (I shouldn't have to say this and I don't mean to offend anyone), make sure there is oil on your engine.

Here are some links to a multi-meter and some needle like leads:
The second probe leads are great for back probing without messing up the connector


  1. Good to know about these codes. But little bit rough for the sensors.plugging/unplugging reason is crucial. for that most people don't understand properly after all. Very nice post indeed

  2. we can't find the sensor, neither could a local dealer.
    where should I look?