Hi to all,

After many years of lurking, I need some help from the experts on the forum. Had Jaguars for years.....never really had a problem. I have a OBDII Code of POOAD. From what I can see and looking through the service manual, please tell me if I am right:

POO AD is a trouble code that states

Intake Air Temperature
Sensor 1 Circuit High (Bank
2) -

From the manual, it appears that the intake temperatures are taken at the Mass Air Flow Sensor (see below) - It also appears (and correct me if I am wrong), the problem can be that the sensors themselves are screwed up or the wiring to an from the sensors could be screwed up.

1) I am not the guy to fiddle around with wiring harnesses, and stuff.
2) Seems to me that the best way to handle this is swap out the Mass Air Flow Sensor
3) The Mass Air Flow sensors are down on the wheel wells, so I would take off one of the front wheels, undo the Torx connectors, bend back the rain shield and access the Tube the MAF is placed in.
4) Jaguar Numbering of "banks" seems to indicate that it would be the DRIVERS side as that is bank 2 where cylinder 1 is on the passenger side according to their current AJ Numbering system
5) Is the above correct?

From the Manual pg 1546......

MASS AIR FLOW AND TEMPERATURE SENSORS
The MAFT sensors allow the ECM to measure the mass and the temperature of the air flow into the engine. The mass air flow
is measured with a hot film element in the sensor. The temperature of the air flow is measured with a NTC thermistor in the
sensor. The mass air flow is used to determine the fuel quantity to be injected in order to maintain the stoichiometric air/fuel
mixture required for correct operation of the engine and the catalytic converters.
There are two MAFT sensors installed, one in each air cleaner outlet duct. Each MAFT sensor is secured with two screws and
sealed with an O-ring. On each MAFT sensor, a five pin electrical connector provides the interface with the engine harness.
If the hot film element signal fails the ECM invokes a software backup strategy to calculate the mass air flow from other
inputs. Closed loop fuel control, closed loop idle speed control and evaporative emissions control are discontinued. The
engine will suffer from poor starting, poor throttle response and, if the failure occurs while driving, the engine speed may dip
before recovering.
If the NTC thermistor signal

 

Bump.... 160 views and no ideas?

 

I'll add something to help elicit more enlightened responses. Is it worthwhile to try to clean the MAF first with some spray on MAF cleaner? I haven't looked at how the MAF is setup in my XK, but have used MAF cleaner in my older Passat to good effect.

 

Your typing of the code using O's instaed of zeros made it hard to search.

However: https://www.obd-codes.com/p00ad

Using your scan tool, please check the air intake temperature for the affected bank and let us know the reading. This is unlikely to be a MAF problem.

 

The resolution to the issue is just as I postulated above. The Code indicates that it is "high" intake temperature bank 2. To that end, I accessed the MAF and noticed that one of the wires (red) was severed, which was giving the code.