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Should Check Engine light come on when unplug MAF sensor?
Posted: Sat Oct 22, 2011 3:28 pm
by Ken_W
Just drove with MAF sensor unplugged; am trying to diagnose a problem.
No trouble lights or messages appeared. Shouldn't it throw a code when you unplug the MAF?
Ken_W
Re: Should Check Engine light come on when unplug MAF sensor
Posted: Sat Oct 22, 2011 3:49 pm
by 00Beast
Might have thrown a history code. Sometimes it takes more than one self-check for it to sense it being disconnected.
Re: Should Check Engine light come on when unplug MAF sensor
Posted: Sun Oct 23, 2011 12:23 am
by The_Maniac
second that.
Could hook a scan tool up while the MAF is disconnected and see what it says.... But I am surprised that it's not getting any MAF data and is not tripping a light....
Re: Should Check Engine light come on when unplug MAF sensor
Posted: Wed Oct 26, 2011 5:53 pm
by redzmonte
should come on.
Re: Should Check Engine light come on when unplug MAF sensor
Posted: Sat Oct 29, 2011 6:25 pm
by Ken_W
Went to Advance Auto and had them scan for OBDII and ABS codes, only history code found was B1287 "Steering Sensor Excessive Rate / Wiper Offset Malfunction" which I take to mean I need a new SWPS. (My "Service Stability System" light comes on every now and then, and then goes back off.)
Anybody willing to unplug their MAF sensor and see if a light appears on their car? I'm wondering if this is indicative of a larger electrical problem, or just a perfectly normal situation.
Ken_W