Faulty MAF Sensor, fault can't be erased.

Hello people, does anyone know how to solve the problem, the diagnostics report the maf sensor, it has been replaced with a new one, but the error cannot be erased. The car jerks at low revs, is the ECU maybe in trouble

Lazar_Dunjic wrote: ↑Sun Apr 11, 2021 6:58 pm Hello people, does anyone know how to solve the problem, the diagnostics report the maf sensor, it has been replaced with a new one, but the error cannot be erased. The car jerks at low revs, is the ECU maybe in trouble

Hello

Don't buy a new MAF on the back of a MAF code.

Firstly, disconnect the MAF and run the car to see if the performance improves.

If it improves with the MAF disconnected then you quite probably need to clean the MAF sensor, reconnect it and then try the run again.

If cleaning makes no improvement then replace the MAF.


If performance doesn't change with the MAF disconnected, don't replace it. You probably don't have a faulty MAF.

the diagnostics report the maf sensor,

The MAF has two sensors inside and each of those can fail in different ways, each with its own 'P' failure code.
Diagnostics should give you those codes and you can post them here. Without the codes, it is not possible to diagnose further than the steps I have listed above.


Depending on what you read the faults with, there may be more codes than just MAF codes that are stored and the tool you NEED to read them all is lexia/diagbox (topic here). Your fault may not be a MAF but EGR or Turbo electrovalve, and lexia/diagbox can read these codes.

You can't fix this fault by just changing parts on a whim.

Is this the car where you removed the intercooler and now have error codes?

yes, there is no intercooler, a new one has been ordered and I am waiting for it to arrive, but an error has occurred for the maf sensor and I cannot delete it

Please post the full MAF error code and if it is stored as permanent or temporary.

A screen shot of lexia is much easier than a lot of typing