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dmtben



Member Since: 13 Mar 2023
Location: Warwickshire
Posts: 6

United Kingdom 
MAF sensor MIL
Hello all,
While on a trip recently, my defender (2.4tdci 110 Hardtop) flashed up a MIL, which came up as codes P1102 and P0100, both related to the MAF sensor.
I've checked the MAF and cables, cleaned it, checked all pipework for splits, cracks etc, but can't see anything that would be an issue. The only thing I can see that is wrong is that my airbox doesn't quite seal properly on one side, but that shouldn't be causing this I guess? Anyone got any other ideas?

Thanks
Post #1039605 10th Jul 2024 12:40pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6546

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Might be useful: https://www.defender2.net/forum/topic92122.html

Do you have the full codes (normally two more digits/characters after the P0100 and P1102)?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #1039606 10th Jul 2024 12:52pm
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 362

United Kingdom 
Try sealing the air box.. That is exactly the sort of thing that could cause your code..
If that doesn't sort your issue then check the supply and ground on the sensor.. I think the maf uses a 12V supply.
And finally what it is actually outputting.. Trouble with that final check is it helps if you have a known good reference..
Post #1039608 10th Jul 2024 1:07pm
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dmtben



Member Since: 13 Mar 2023
Location: Warwickshire
Posts: 6

United Kingdom 
Martin wrote:
Might be useful: https://www.defender2.net/forum/topic92122.html

Do you have the full codes (normally two more digits/characters after the P0100 and P1102)?


Thanks Martin, will have a look at that thread. The full codes are P0100-29 and P1102-00.
P0100-29 says "Mass or volume air flow circuit" and P1102-00 says "Mass Air Flow (MAF) sensor in range but below the expected level".
Post #1039622 10th Jul 2024 3:29pm
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