Hi everyone.

I have a 1.3 MultiJet Panda, and about 8 months ago (at about 42K miles) the engine light came on. My local garage replaced the MAP sensor and that fixed it.

Problem is that the engine fault light has come on again (50k miles) and it seems to be the same problem (an ECU scanner I just bought says P0238 'air supply circuit Turbo boost sensor A circuit high'). Anyhow, I've just ordered a new MAP sensor since they're pretty cheap at shop4parts. Question is, is it easy to put in? I guess it's somewhere on the inlet manifold, underneath the big plastic cover that holds the air filter.

Can anyone tell me how to get at the MAP sensor please?The air filter holder seems to be held on by some sort of rubbery clips, but it all looks a bit fragile.

Thanks in advance for any advice.

Mark

Re: Panda MultiJet MAP Sensor

Hi All,

I've been able to answer this myself. It turned out to be an easy job.
To get at the MAP sensor:
1. Remove the fresh air inlet pipe from the front left of the air filter box using a big flat screw driver to push back the tab that clips it in. Remove two bolts at the front tight of the air filter box, that hold the fitting pipe fitting (going to the turbo?). The pipe has has another pressure sensor on the top, but this doesn't need to be disturbed.
2. Ease up the air filter box over its 2 rubber mounts, pushing up from underneath the filter box. As it pulls up, ease the front right pipe fitting out of the box.
3. The MAP sensor sensor is at the rear top left of the engine block. There are some clips holding the writing loom so it runs along the rear of the engine. Remove the bolt holding the clip which is just to the right of the MAP sensor (for easier access to the MAP sensor).
4. The MAP sensor is held in by a single screw with a hexagonal slot. Use a small Allen key (don't know the size, but I'd guess 3-4 mm) to remove the screw. This is fiddly!. The MAP sensor then just pulls out of the mainfold.
5. Remove the wiring plug from the MAP sensor. First withdraw the yellow retaining clip, then pull firmly (but not on the wiring) and wiggle the plug. It's quite a firm fit.
Plug in the new MAP sensor and put it back in the manifold.
6. Screw back the screw that hold the MAP sensor. I think you need to be careful here - it's only a self-tapper into plastic, so don't over tighten.
7. Put back the bolt that holds the wiring harness, then put the air filter box back.
It's easiest if you remove the rubber mounts from the posts, and put them into the air filter box, then push the box down onto the posts.
8. I used the two bolts to draw back the box onto the input pipe, being careful that the O-ring was correctly in place. Put back the fresh air inlet pipe.
9. I reset the error code using my plug-in diagnostic thingy and then I was amazed that the engine management light went off, my engine regained full power and it's been running great ever since. I think (but I'm not sure) that if you run the engine a few times for a few miles, the light will go off anyhow if all is well.

I hope this MAP sensor lasts a bit longer than the last two, but at least this repair cost only £25, compared to the garage repair at £125.

Hope this helps someone.

Mark