Should Check Engine light come on when unplug MAF sensor?

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Ken_W
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Should Check Engine light come on when unplug MAF sensor?

Post 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?

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Re: Should Check Engine light come on when unplug MAF sensor

Post by 00Beast »

Might have thrown a history code. Sometimes it takes more than one self-check for it to sense it being disconnected.
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The_Maniac
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Re: Should Check Engine light come on when unplug MAF sensor

Post 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....
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redzmonte
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Re: Should Check Engine light come on when unplug MAF sensor

Post by redzmonte »

should come on.
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Ken_W
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Re: Should Check Engine light come on when unplug MAF sensor

Post 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. :dontknow:

Ken_W
2000 SSEi "Gypssei" - 206k miles - Light Bronzemist Metallic - stock
1999 Grand Am GT - 168k miles - Red - stock DEAD -- transmission died
2004 Pontiac Montana Ext 2WD - 207k miles - Blue Black Metallic - stock
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