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Geert DCPU

td4 2.2 TDCi - going into limp mode

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Problems - again - with the motor going in to 'limp-mode':

Warning light in dashboard coming up (orange engine management light), engine falling down to max 2000 rpm.

Read out on the ECU shows: P0101 - Mass or Volume Air Flow Circuit Range/Performance Problem

- sensor air mass meter

- air mass meter

- cleaned the EGR-valve (replaced only 7 or 8000km ago)

- hoses replaced by silicone ones (one had a small rip, so replacement was necessary anyhow)

Drove over 600km this weekend without failure, now had the same problem on 2 occasions:

Warning light + limp mode / turning engine off removes the limp mode / after 4 or 5 times restarting the engine: warning light goes down and all going to normal.

Any ideas how to fix this?

Mrs. G suggested setting fire to it could solve any futur problems , but that 's a bit drastic...

I love driving the defender but reliability is at it's low, so in 'not happy'-mode right now.

Edited by Geert DCPU

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On 10/2/2018 at 7:20 AM, RedLineMike said:

have you looked at the live data in regards to what the MAF is reading?

no problems there so it seems

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Update: rather unfortunate coincidence: two unrelated failures on the air-intake system giving the same error code.

- as mentioned: ripped airhose

- and a faulty intercooler (housing is coming apart)

Also replaced the injectors: injectors giving too much diesel cause overpressure, overpressure goes into airintake after the airmassmeter, MAF-sensor along the line reads other data than airmassmeter and causes the F0101/limpmode. In my case the injectors were tested, they gave too little diesel - replacement was advised.

For now problems solved, up to the next!




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Selling my previous def (110 td5 SW) was my most regretted decision ever...  Driving it was no longer sensible (read: affordable), due to exploding tax-regulations in Belgium.

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