P0506 & p0101

Hi,

I got these tow codes, whenever they are on the car runs bad “jerking” then it gets better when the RPM become more than 3000


P0506 Idle Air Control (IAC) System - RPM Too Low
P0101 Mass Air Flow (MAF) Sensor Performance

Any Advice??

not sure on the fault codes but b4307 could use the rafig/pn process

P0506:

"This DTC sets when the PCM detects an engine speed outside of the IAC's range of control."

The PCM has opened the IAC all the way and the idle speed is staying than 100 rpm lower than commanded/desired... it indicates that the IAC not contributing to airmass... IAC passages may be blocked, or IAC may be dying/dead.


P0101:

"The MAF frequency is 50 percent different from the speed density calculation."

The PCM's sanity check of the MAF doesn't agree... either the MAF is really dirty/broken, or the MAF table and/or VE tables are incorrect.

Quote:

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Originally Posted by joecar

P0506:

"This DTC sets when the PCM detects an engine speed outside of the IAC's range of control."

The PCM has opened the IAC all the way and the idle speed is staying than 100 rpm lower than commanded/desired... it indicates that the IAC not contributing to airmass... IAC passages may be blocked, or IAC may be dying/dead.


P0101:

"The MAF frequency is 50 percent different from the speed density calculation."



The PCM's sanity check of the MAF doesn't agree... either the MAF is really dirty/broken, or the MAF table and/or VE tables are incorrect.

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Thanks I will work on it.