Error Code P0470 on 2.2HDi

[blzeebub]

Morning,

For the last week ive had the 'Antipollution System Defective' message pops up on the screen when i start the car and the Engine Diagnostic warning Light stays on. There doesnt seem to be any loss of power and it doesnt go into super slow limp mode. Weve had a diagnostic reader on it and the two codes were P1352 and P0470. Both were cleared and the next day they returned. Some digging indicates that the P1352 may be referring to the glow plugs and probably not related (?). The P0470 is an Exhaust Pressure Sensor A Circuit according to the extensive list on the forum and an additional bit of diag software gives the following info:

Intermittent fault. Differential exhaust pressure signal. Coherence of the differential pressure when stopped.

Now, under the bonnet where the large pipe from the top of the intercooler goes to the engine there is a small bracket that has a connector plugged into it at the the end of a short pipe. This was bent down when taking a look and has since been straightened. is it possible that the connector has been disturbed or the pipe now has a leak as it looks like it may have a few cracks and that is why the message is popping up?

Thanks in advance.

Cheers

Nat
B->

[Doggy]

Unlikely - that's the MAP sensor. The code most likely relates to the FAP/dpf differential pressure sensor, (assuming your car's not been defapped as yet)?



The sensor is mounted somewhere on the bulkhead and connected to the Cat/Dpf housing, (11 / 12 above), via flexible pipes, one of which pushes onto pipe 16 above - it may be you just have a hose off - at least check that out first

[blzeebub]

Thanking thee fine sir. DPF hasnt been removed but im considering the options. is it alright if i PM you to discuss?

Cheers

Nat
B->

[Doggy]

Certainly.