Hello Jaguar friends! I am the happy owner of a Jaguar X305 6.0 V12 year. 1996 only driven 110,000 km. However, it has teased a few times lately by suddenly not wanting to take the gas. then I have to drive with a very light foot on the accelerator so that it does not stall. However, I can keep it running at low speed if I am very careful with the presser foot. It then goes 10 - 15 km. and maybe half an hour then the car suddenly drives normally again. This has happened twice with approx. 14 day interval. The ODB tester shows error P0106 &; P1106 which indicates failure associated with the LNA1622AA inlet board sensors. Since there are 2 of them, it's not just changing one. That's why I'm asking if anyone has experienced something similar and if so how did you fix the problem?? For example, does anyone know how to measure if a map sensor is OK?? I'm hoping for good advice so I don't have to mess around blindly. Thank you in advance for your help. Per

 

bad wifi today but trying

The middle wire on the connectors should read 1.7 volts DC at idle and increase with throttle up

This can be seen on page 66 and back to 65 at pin Papa Indy 45 - 2 and 3

jagxj1996.pdf (jagrepair.com)

The common denominator could be the power source for the 2

researching

power for both sensors come from pin 16 of the ECM connector Papa Indy 45 and there is a splice in the bundle betweent the 2 sensors

 

See page 250

801S TITLE (jagrepair.com)

 

It's doubtful that the MAP sensors are bad. Especially if they give the same error code together. They are probably reacting to some other malfunction, or are not getting power as Parker said.

The Blue with White wire supplies 5V to each sensor (and the TPS), as seen in the diagram below. You will want to check that. You can see where there is a splice (PIS1) that should be nearby but it is hidden inside the wire bundle.

The middle wires to the MAPs (red/white A bank, red/green B bank) are the output wires. With the ignition on but engine off, they should read 3.6V DC (1 bar atmospheric pressure with the engine off). As the engine runs, the pressure inside the manifolds drops due to suction and causes lower output voltages.

The third wire is the ground, black/green on both sensors. Make sure they have continuity to ground.