P0441 P2281

[Adrian Chirila]

Hi all, where to look?

 

P0441 - fuel tank ventilation system(above upper limit value)

P2281 - Throttle Plate(below lower limit exceeded)

 

After I refuel, sometimes has a hesitation start.

When is cold the start is not normal(rpm is going to 1000 max not 1400-1500 like when is hot).

Somentimes when I kickdown in 2 gear has a hesitation.

After 30-40min driving the PRND all are light up and the gear changing is not so smooth.

I cleaned the MAF sensors, changed the intercoolers seals( a aluminium pipe has a crack, waiting the order)

 

For P0441 is the purge valve fault?

 

Thank you

[JFP in PA]

P0441 code is EVAP purge valve, alongside the drive side intake manifold tubes.

P2281 Code is most likely an air leak between the MAF and the throttle body, the code generally means that the powertrain control module (PCM) has detected a degree of airflow at the mass airflow (MAF) sensor which does not exist at the throttle body.

[Adrian Chirila]

I will change the purge valve including that pipe.and I will look on all the pipes from MAFs to throttle body.I don't know where to find a pressure test here in Uk.

Thank you

[JFP in PA]

3 minutes ago, Adrian Chirila said:

I will change the purge valve including that pipe.and I will look on all the pipes from MAFs to throttle body.I don't know where to find a pressure test here in Uk.

Thank you

You can use a smoke test to find intake systems leak. 

[Adrian Chirila]

the P2281 it is possible to be from that aluminium pipe from the bottom intercooler?

[JFP in PA]

1 minute ago, Adrian Chirila said:

the P2281 it is possible to be from that aluminium pipe from the bottom intercooler?

The code is pretty specific, it is seeing a difference between where the MAF is and where the throttle body is located; the leak has to be in between those two elements, but does not preclude that there may be other leaks that have not thrown codes.

[Adrian Chirila]

ok.I understand. I will find a smoke machine.

And with other reader gives me P2187 and P2189 system too lean.I hope is from the air leak.Thank you

[Corniche]

Hi Adrian, did you solve the problem? I've same symptoms with my 2006 CTTS (P2281 - Throttle Plate below lower limit exceeded, all PRND lights on after a while and a not smooth transition from 2nd to 3rd gear). may be a cracked intake distributor (aka intake plenum)?

 

thanks