Engine check light is on for above after OBDII test
What do I do?

11/13/2005 5:53:30 PM

google

11/13/2005 6:04:14 PM

would help on what car... year... and so on

11/13/2005 6:43:00 PM

99 honda civic hx

11/13/2005 7:06:25 PM

well apparently your sensor malfunctioned and needs replacement. that would be a guess... if you don't, your car could blow up. But, I could be entirely wrong

11/13/2005 8:29:05 PM

Means your primary oxygen sensor is lazy. Higher mileage, fouling, etc, make an O2 sensor not as responsive to instantaneous mixture changes. This is necessary because most ECM's "ping-pong" the mixture between rich and lean to guarantee better secondary catalyst performance on oxides of nitrogen.

11/13/2005 8:50:36 PM

I've replaced mass air flow control about a month ago. still lights on. What do I do? Advanced autoparts dude said map sensor could be wrong.

11/14/2005 9:15:03 AM

Advance Auto Parts person doesn't know his ass from a crater in the ground.

MAP doesn't have anything to do with air-fuel ratio. It just indirectly measures the amount of air coming into the engine. An A/F sensor is nothing more than the O2 sensor. It provides feedback for the ECM to fine-tune the A/F ratio. It is also prone to fouling, which makes it "lazy" and unresponsive to mixture change. The ECM can monitor responsiveness because the O2 sensor output should relatively closely follow the "ping-pong" mixture changes that I've previously mentioned...when it doesn't, then the ECM can flag an error code.

The manufacturer-specific error codes are usually meant to expound on the OBDII-mandated "zero" codes...and that's what P1163 is. It provides more information on a general OBDII code concerning the Sensor 1 (the one ahead of the catalyst).

11/14/2005 11:44:32 AM